Maruo Calcium Company Limited

Japan

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C08K 3/26 - CarbonatesBicarbonates 15
C09C 1/02 - Compounds of alkaline earth metals or magnesium 14
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1.

SURFACE-TREATED CALCIUM CARBONATE FILLER, AND RESIN COMPOSITION AND MOLDED ARTICLE CONTAINING SAME

      
Application Number JP2024026820
Publication Number 2025/033221
Status In Force
Filing Date 2024-07-26
Publication Date 2025-02-13
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Nagamatsu, Makoto
  • Hayashi, Yusuke
  • Kasahara, Hidemitsu

Abstract

A surface-treated calcium carbonate filler according to the present invention satisfies the following formulae (a), (b) and (c): (a): 2.0≤Sw≤20.0 (m2/g), (b): 300≤Pw≤5,000 (ppm), and (c): 0.01≤Tw≤0.30 (% by mass). In formulae, Sw is the BET specific surface area (m2/g) of the surface-treated calcium carbonate filler; Pw is the content (ppm) of the phosphorus element measured by an inductively coupled plasma (ICP) emission spectrometer of the surface-treated calcium carbonate filler; and Tw is the weight loss (% by mass) at 140°C-220°C measured by a differential thermal balance of the surface-treated calcium carbonate filler.

IPC Classes  ?

  • C09C 1/02 - Compounds of alkaline earth metals or magnesium
  • C01F 11/18 - Carbonates
  • C08K 3/26 - CarbonatesBicarbonates
  • C08L 23/00 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers

2.

SURFACE-TREATED CALCIUM CARBONATE FILLER, AND RESIN COMPOSITION AND MOLDED ARTICLE USING SAME

      
Application Number JP2023031097
Publication Number 2024/247291
Status In Force
Filing Date 2023-08-29
Publication Date 2024-12-05
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Hayashi, Yusuke
  • Nagamatsu, Makoto
  • Kasahara, Hidemitsu

Abstract

The surface-treated calcium carbonate according to the present invention contains surface-treated calcium carbonate particles surface-treated with fatty acids and phosphoric acids, the surface-treated calcium carbonate satisfying formulae (a), (b) and (c). (a): 3 ≤ Sw ≤ 20 (m2/g) (b): 300 ≤ Pw ≤ 5000 (ppm) (c): 50 ≤ calciumization rate ≤ 95 (mass %) In the formulae, Sw is the BET specific surface area (m2/g) of the surface-treated calcium carbonate particles, Pw is the phosphorus content (ppm) in the surface-treated calcium carbonate particles measured by an inductively coupled plasma atomic emission spectrometer (ICP), and the calciumization rate is a percentage of the mass (g) of fatty acids forming a salt with calcium with respect to the total surface treatment amount (g) of the surface-treated calcium carbonate particles.

IPC Classes  ?

  • C08L 101/00 - Compositions of unspecified macromolecular compounds
  • C08J 5/18 - Manufacture of films or sheets
  • C08K 3/26 - CarbonatesBicarbonates
  • C08K 5/09 - Carboxylic acidsMetal salts thereofAnhydrides thereof
  • C08K 5/52 - Phosphorus bound to oxygen bound to oxygen only
  • C08K 9/04 - Ingredients treated with organic substances
  • C08L 23/00 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers
  • C09C 1/02 - Compounds of alkaline earth metals or magnesium

3.

SURFACE-TREATED CALCIUM CARBONATE AND RESIN COMPOSITION USING SAME

      
Application Number JP2023031270
Publication Number 2024/090015
Status In Force
Filing Date 2023-08-29
Publication Date 2024-05-02
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Miki, Shuji
  • Miyai, Yuki
  • Kosaka, Tomonori
  • Kudo, Homare
  • Takiyama, Shigeo

Abstract

A surface-treated calcium carbonate according to the present invention comprises a calcium carbonate that is surface-treated by a fatty acid-based surface treating agent, and satisfies a specific BET specific surface area (Sw), a specific thermal reduction (As) per unit area, a specific brightness sustaining rate (%), a specific average pore diameter (Dxp) at which the mercury intrusion amount becomes maximum in a specific pore distribution determined through a mercury intrusion method, and a specific average pore diameter amount [maximum mercury intrusion increase amount (Dyp) / average pore diameter (Dxp)].

IPC Classes  ?

  • C01F 11/18 - Carbonates
  • C09J 11/04 - Non-macromolecular additives inorganic
  • C09D 201/00 - Coating compositions based on unspecified macromolecular compounds
  • C09J 201/00 - Adhesives based on unspecified macromolecular compounds
  • C09D 7/62 - Additives non-macromolecular inorganic modified by treatment with other compounds
  • C09C 1/02 - Compounds of alkaline earth metals or magnesium
  • C09C 3/06 - Treatment with inorganic compounds
  • C09C 3/08 - Treatment with low-molecular-weight organic compounds

4.

DENTINAL TUBULE SEALING MATERIAL FOR DENTAL USE

      
Application Number JP2023038913
Publication Number 2024/090565
Status In Force
Filing Date 2023-10-27
Publication Date 2024-05-02
Owner
  • MEDIBO CO., LTD. (Japan)
  • MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Uemura, Naoya
  • Kita, Kazuko
  • Hayashi, Yusuke
  • Kasahara, Hidemitsu

Abstract

According to the present invention, in order to shorten the time of a calcification reaction that converts, to apatite, a dentinal tubule sealant applied onto a diseased portion of dentinal tubules, and to prevent the apatite from easily detaching when subjected to tooth brushing or the like, a dispersion base material (X) containing a specific calcium carbonate is applied onto the diseased portion of the dentinal tubules, after which a calcification reaction accelerator (Y) containing a phosphoric acid-based compound is applied as a topcoat.

IPC Classes  ?

5.

Calcium carbonate filler for resins, and resin composition containing same

      
Application Number 16348625
Grant Number 11186699
Status In Force
Filing Date 2017-09-07
First Publication Date 2019-11-21
Grant Date 2021-11-30
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Yamamoto, Kazuya
  • Kasahara, Hidemitsu

Abstract

2/g); Dx is a primary particle diameter (μm) expressed as a calculation formula: Dx=6/(2.7·Sw); Dy is a 50% diameter (μm); and Tw is a thermal weight loss (% by weight) between 100 and 300° C.

IPC Classes  ?

  • C08K 3/26 - CarbonatesBicarbonates
  • C09C 1/02 - Compounds of alkaline earth metals or magnesium
  • C01F 11/18 - Carbonates
  • C08K 9/04 - Ingredients treated with organic substances
  • C08L 23/00 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers
  • C08L 67/00 - Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chainCompositions of derivatives of such polymers
  • C08L 81/04 - Polysulfides

6.

CALCIUM CARBONATE FILLER FOR RESINS, AND RESIN COMPOSITION CONTAINING SAME

      
Application Number JP2017032195
Publication Number 2018/088008
Status In Force
Filing Date 2017-09-07
Publication Date 2018-05-17
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Yamamoto Kazuya
  • Kasahara Hidemitsu

Abstract

Provided is a calcium carbonate filler for resins, which has uniform particles, has high dispersibility and thermal stability, and particularly has excellent smoothness, release properties, and shedding resistance, etc., and is useful as an anti-blocking material. The calcium carbonate filler for resins is characterized by comprising calcium carbonate particles, and satisfying formulas (a)-(e) ((a): 1.0≤Sw≤12.0 (m2/g), (b): 0.1≤Dx≤5.0 (μm), (c): 0.1≤Dy≤ 5.0 (μm), (d): 0.8≤Dy/Dx=≤3.5, (e): 0.1≤Tw≤0.8 (wt%), Sw: a BET specific surface area (m2/g) measured using a BET specific surface area measuring device, Dx: a primary particle diameter (μm) calculated from the BET specific surface area Sw and represented by calculation formula = 6/(2.7·Sw), Dy: a 50% diameter (μm) accumulated, starting with particles having the smallest volume particle size, in a volume particle size distribution actually measured using a laser diffraction particle size distribution measuring device, and Tw: a thermal reduction (wt%) at 100-300°C measured using a differential thermal balance device).

IPC Classes  ?

  • C08L 101/00 - Compositions of unspecified macromolecular compounds
  • C08K 3/26 - CarbonatesBicarbonates

7.

Surface-treated calcium carbonate filler for curable resin composition, and curable resin composition containing filler

      
Application Number 15548564
Grant Number 10336888
Status In Force
Filing Date 2016-03-18
First Publication Date 2018-01-18
Grant Date 2019-07-02
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Utsumi, Ryoji
  • Sakaguchi, Shigeru
  • Nishioka, Takaaki

Abstract

Provided are a surface-treated calcium carbonate filler useful in a curable resin, for imparting performance having excellent heat resistance, color fastness, strength and elongation, and a curable resin containing the filler. Mg: a proportion [ppm] of magnesium contained in surface-treated calcium carbonate, Fe: a proportion [ppm] of iron contained in surface-treated calcium carbonate, SFa: a proportion [wt %] of saturated fatty acid in the surface treatment agent comprising a water-soluble monovalent salt of a fatty acid, and UFa: a proportion [wt %] of unsaturated fatty acid in the surface treatment agent comprising a water-soluble monovalent salt of a fatty acid.

IPC Classes  ?

  • C08K 9/04 - Ingredients treated with organic substances
  • C09C 3/08 - Treatment with low-molecular-weight organic compounds
  • C09C 1/02 - Compounds of alkaline earth metals or magnesium
  • C09J 11/06 - Non-macromolecular additives organic
  • C08K 5/56 - Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
  • C09J 201/10 - Adhesives based on unspecified macromolecular compounds characterised by the presence of specified groups containing hydrolysable silane groups
  • C09K 3/10 - Materials not provided for elsewhere for sealing or packing joints or covers
  • C08L 101/10 - Compositions of unspecified macromolecular compounds characterised by the presence of specified groups containing hydrolysable silane groups
  • C08K 3/26 - CarbonatesBicarbonates
  • C09J 11/04 - Non-macromolecular additives inorganic
  • C01F 11/18 - Carbonates

8.

Calcium carbonate filler for resin and resin composition including said filler

      
Application Number 15116013
Grant Number 09926428
Status In Force
Filing Date 2015-02-20
First Publication Date 2017-06-22
Grant Date 2018-03-27
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Sako, Kouhei
  • Kasahara, Hidemitsu

Abstract

Provided is a calcium carbonate filler which gives films and the like excellent in moldability, dispersibility, gasmark (bubbles), hue, and further, excellent in optical properties such as reflectivity and light resistance when incorporated into a resin to prepare a resin composition.

IPC Classes  ?

  • C08K 3/26 - CarbonatesBicarbonates
  • C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
  • C08K 9/04 - Ingredients treated with organic substances
  • C01F 11/18 - Carbonates
  • C09C 1/02 - Compounds of alkaline earth metals or magnesium

9.

SURFACE-TREATED CALCIUM CARBONATE FILLER FOR CURABLE RESIN COMPOSITION, AND CURABLE RESIN COMPOSITION CONTAINING FILLER

      
Application Number JP2016058654
Publication Number 2016/152762
Status In Force
Filing Date 2016-03-18
Publication Date 2016-09-29
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Utsumi Ryoji
  • Sakaguchi Shigeru
  • Nishioka Takaaki

Abstract

Provided are a surface-treated calcium carbonate filler useful in a curable resin, for imparting performance having excellent heat resistance, color fastness, strength, and elongation, and a curable resin composition containing the filler. A surface-treated calcium carbonate in which calcium carbonate synthesized using compact limestone is treated by a surface treatment agent, the surface-treated calcium carbonate filler for a curable resin composition characterized by satisfying formulas (1) through (4). (1): 0 ≤ Mg ≤ 2000; (2): 0 ≤ Fe ≤ 200; (3): 70 ≤ SFa ≤ 100; (4): 0 ≤ Ufa ≤ 30. In the formulas, Mg represents the ratio [ppm] of magnesium included in the surface-treated calcium carbonate, Fe represents the ratio [ppm] of iron included in the surface-treated calcium carbonate, SFa represents the ratio [wt%] of saturated fatty acid in a surface treatment agent comprising a monovalent water-soluble salt of a fatty acid, and Ufa represents the ratio [wt%] of unsaturated fatty acid in a surface treatment agent comprising a monovalent water-soluble salt of a fatty acid.

IPC Classes  ?

  • C09C 1/02 - Compounds of alkaline earth metals or magnesium
  • C01F 11/18 - Carbonates
  • C08K 5/56 - Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
  • C08K 9/04 - Ingredients treated with organic substances
  • C08L 101/10 - Compositions of unspecified macromolecular compounds characterised by the presence of specified groups containing hydrolysable silane groups
  • C09C 3/08 - Treatment with low-molecular-weight organic compounds
  • C09J 11/06 - Non-macromolecular additives organic
  • C09J 201/10 - Adhesives based on unspecified macromolecular compounds characterised by the presence of specified groups containing hydrolysable silane groups
  • C09K 3/10 - Materials not provided for elsewhere for sealing or packing joints or covers

10.

CALCIUM CARBONATE FILLER FOR RESIN AND RESIN COMPOSITION INCLUDING SAID FILLER

      
Application Number JP2015054714
Publication Number 2015/129560
Status In Force
Filing Date 2015-02-20
Publication Date 2015-09-03
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Sako Kouhei
  • Kasahara Hidemitsu

Abstract

Provided is a calcium carbonate filler which, when combined with a resin and made into a resin composition, has excellent mouldability, dispersibility, gas marks (bubbles), and hue, and produces a film or the like that has excellent optical characteristics such as reflectance and light resistance. The calcium carbonate filler for resin is characterised by satisfying expressions (a), (b), and (c). (a) 1.0 ≤ Sw ≤ 10.0 (m2/g) (b) 0.01 ≤ Tw ≤ 0.5 (wt%) (c) 80 ≤ Lw ≤ 90 Sw: BET specific surface area (m2/g) measured by a BET specific surface area measurement device (Macsorb manufactured by Mountech Co., Ltd.), Tw: weight loss value (wt%) at 200-300°C measured by a thermogravimetric device (Thermo Plus EVO II manufactured by Rigaku Corporation), Lw: degree of whiteness (L value) measured by a spectroscopic colour difference meter (ZE-2000 manufactured by Nippon Denshoku Industries Co., Ltd.).

IPC Classes  ?

  • C01F 11/18 - Carbonates
  • C08K 3/26 - CarbonatesBicarbonates
  • C08L 67/00 - Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chainCompositions of derivatives of such polymers

11.

Calcium carbonate filler for resin, and resin composition containing said filler

      
Application Number 14432310
Grant Number 09815953
Status In Force
Filing Date 2013-10-11
First Publication Date 2015-08-27
Grant Date 2017-11-14
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Kasahara, Hidemitsu
  • Takiyama, Shigeo

Abstract

The calcium carbonate filler for a resin is provided in which a volatile component such as water present in a surface of calcium carbonate is likely to be degassed even when the filler is incorporated into and kneaded with a resin having high processing temperature at a high concentration, and foaming or the like can be suppressed. In particular, the calcium carbonate filler is useful in optical fields that require reflectivity and light resistance. Dma: a content rate (% by volume) of particles having a particle diameter of 3 μm or more in a volume particle size distribution measured with a laser diffraction particle size distribution measurement device.

IPC Classes  ?

  • C08K 3/26 - CarbonatesBicarbonates
  • C09C 1/02 - Compounds of alkaline earth metals or magnesium
  • B32B 5/16 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer formed of particles, e.g. chips, chopped fibres, powder
  • C08J 5/18 - Manufacture of films or sheets
  • C01F 11/18 - Carbonates
  • C08K 9/04 - Ingredients treated with organic substances

12.

Heavy calcium carbonate, production method therefor, and resin composition containing said calcium carbonate

      
Application Number 14412514
Grant Number 09815971
Status In Force
Filing Date 2013-07-17
First Publication Date 2015-07-02
Grant Date 2017-11-14
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Maeba, Takeshi
  • Ehara, Shoji
  • Hojo, Hisakazu

Abstract

2/g), B: average particle diameter (μm): 50% particle diameter (d50) (μm), C: 10% particle diameter (μm), D1, C1: water content at between 25° C. and 300° C. by a Karl-Fischer method (heating vaporization method) (ppm), and C2: water content at between 200° C. and 300° C. by the same method.

IPC Classes  ?

  • C08K 9/04 - Ingredients treated with organic substances
  • C09C 1/02 - Compounds of alkaline earth metals or magnesium
  • C09J 11/04 - Non-macromolecular additives inorganic
  • C01F 11/18 - Carbonates
  • B05D 3/02 - Pretreatment of surfaces to which liquids or other fluent materials are to be appliedAfter-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
  • C08K 3/26 - CarbonatesBicarbonates

13.

Surface-treated calcium carbonate filler, and curable resin composition containing the filler

      
Application Number 14396987
Grant Number 09422419
Status In Force
Filing Date 2013-04-26
First Publication Date 2015-04-23
Grant Date 2016-08-23
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Fukumoto, Katsunori
  • Hayashi, Yusuke
  • Sakaguchi, Shigeru
  • Yago, Tatsunari

Abstract

The surface-treated calcium carbonate filler having a floc structure is provided which can provide a curable resin composition which has a high thixotropic property, exerts a high elongation degree at a low modulus, and has such a restoring rate that a load to be applied onto an adherend is reduced particularly by mixing in the curable resin composition, and the curable resin composition containing the filler. The surface-treated calcium carbonate filler is comprised of a synthetic calcium carbonate which is surface-treated with a fatty acid-based organic material containing a fatty acid salt and has a floc structure, wherein a ratio Sr of the amount of a fatty acid salt for which a counter ion is of monovalent, and which is contained in surface-treating agents eluted as free materials when the surface-treated calcium carbonate is refluxed with ethanol, to the total amount of the surface-treating agents is 10 to 30 wt %, and a porosity Po at the time of the consolidation of the surface-treated calcium carbonate is 38 to 45 wt %.

IPC Classes  ?

  • C09C 1/02 - Compounds of alkaline earth metals or magnesium
  • B32B 27/28 - Layered products essentially comprising synthetic resin comprising copolymers of synthetic resins not wholly covered by any one of the following subgroups
  • C08K 9/04 - Ingredients treated with organic substances
  • C09C 3/08 - Treatment with low-molecular-weight organic compounds
  • C09J 123/22 - Copolymers of isobuteneButyl rubber
  • C09J 183/04 - Polysiloxanes
  • C08L 101/00 - Compositions of unspecified macromolecular compounds
  • C08L 83/04 - Polysiloxanes
  • C09K 3/10 - Materials not provided for elsewhere for sealing or packing joints or covers
  • C08K 3/26 - CarbonatesBicarbonates
  • C09J 133/06 - Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical

14.

CALCIUM CARBONATE FILLER FOR RESIN, AND RESIN COMPOSITION CONTAINING SAID FILLER

      
Application Number JP2013077782
Publication Number 2014/058057
Status In Force
Filing Date 2013-10-11
Publication Date 2014-04-17
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Kasahara Hidemitsu
  • Takiyama Shigeo

Abstract

 Provided is a calcium carbonate filler for resin, in particular, a filler that is useful in the field of optics in which reflectance and light resistance are required, said filler enabling the suppression of bubbles and the like by simplifying the degassing of volatile components such as water present on the calcium carbonate surface, even when a high concentration of the filler is blended into and kneaded with a resin having a high working temperature. In the number particle size distribution as measured by electron micrograph, the calcium carbonate filler for resin contains at most 30% of particles having a particle size of 0.26μm or less, and satisfies formulas (a) Dms5/Dmv5≤3.0, (b) 1.0≤SW≤10.0(m2/g), and (c) Dma≤5.0(vol%). Dms5: 5% diameter (μm) accumulated from the small particle side in volume particle size distribution measured by a laser diffraction particle size distribution measurement device; Dmv5: 5% diameter (μm) accumulated from the small particle side in number particle size distribution of particle size measured by electron microscope; Sw: BET specific surface area (m2/g); Dma: content ratio (vol%) of particles having a particle size of at least 3μm in volume particle size distribution measured by a laser diffraction particle size distribution measurement device.

IPC Classes  ?

  • C08K 3/26 - CarbonatesBicarbonates
  • C01F 11/18 - Carbonates
  • C08K 9/04 - Ingredients treated with organic substances
  • C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
  • C08L 101/00 - Compositions of unspecified macromolecular compounds
  • C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof

15.

Calcium carbonate filler for resin, process for producing the same, and resin composition containing the filler

      
Application Number 14110267
Grant Number 08975322
Status In Force
Filing Date 2012-04-12
First Publication Date 2014-01-23
Grant Date 2015-03-10
Owner Maruo Calcium Co., Ltd. (Japan)
Inventor
  • Kasahara, Hidemitsu
  • Sako, Kouhei
  • Kosaka, Tomonori
  • Kudo, Homare
  • Takiyama, Shigeo
  • Kojo, Hisakazu

Abstract

2/g); Mo: A water amount (ppm) by the Karl Fischer method at 200 to 300° C. The calcium carbonate filler for a resin of the present invention contains less fine powders, has a particle size which has been adjusted to a specific particle size, and contains less volatile components such as water etc. and, even when it is incorporated into a resin having a high processing temperature at a high concentration, problems such as foaming etc. are solved.

IPC Classes  ?

16.

HEAVY CALCIUM CARBONATE, PRODUCTION METHOD THEREFOR, AND RESIN COMPOSITION CONTAINING SAID CALCIUM CARBONATE

      
Application Number JP2013069379
Publication Number 2014/014011
Status In Force
Filing Date 2013-07-17
Publication Date 2014-01-23
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Maeba Takeshi
  • Ehara Shoji
  • Hojo Hisakazu

Abstract

Provided is a surface-treated heavy calcium carbonate useful for a film precisely controlling pore diameters or a polyester-based resin, etc., that is readily hydrolyzed; or a heavy calcium carbonate that is adequate with no preliminary drying or with simple preliminary drying, when mixing same in a one-liquid type moisture curable adhesive or a sealant or other curable resin. A surface-treated heavy calcium carbonate fulfilling formulas 13,000≤A≤25,000, 0.8≤B≤3.0, C≥0.55, and 0≤D1≤1,000 or a heavy calcium carbonate fulfilling formulas 8,000≤A≤25,000, 0.8≤B≤15, 0≤C1≤1,000, and 0≤C2≤150. In the formulas, A is the specific surface area (cm2/g), B is the 50% particle diameter (d50) at the average particle diameter (µm), C is the 10% particle diameter (µm) in the particle size distribution, D1 and C1 are water content (ppm) measured using the Karl Fischer Method (heating vaporization method) at 25°-300°C, and C2 is the water content (ppm) measured the same way, at 200°-300°C.

IPC Classes  ?

  • C08K 3/26 - CarbonatesBicarbonates
  • C01F 11/18 - Carbonates
  • C08L 101/00 - Compositions of unspecified macromolecular compounds
  • C09C 1/02 - Compounds of alkaline earth metals or magnesium
  • C09C 3/04 - Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
  • C09C 3/08 - Treatment with low-molecular-weight organic compounds
  • C09J 11/04 - Non-macromolecular additives inorganic
  • C09J 201/00 - Adhesives based on unspecified macromolecular compounds

17.

SURFACE-TREATED CALCIUM CARBONATE FILLER, AND CURABLE RESIN COMPOSITION CONTAINING SAID FILLER

      
Application Number JP2013062341
Publication Number 2013/168600
Status In Force
Filing Date 2013-04-26
Publication Date 2013-11-14
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Fukumoto Katsunori
  • Hayashi Yusuke
  • Sakaguchi Shigeru
  • Yago Tatsunari

Abstract

Provided are: a surface-treated calcium carbonate filler which can exhibit an excellent thixotropic property when added to a curable resin composition, can exhibit a high elongation degree at a low modulus, and can have such a recovery rate that a load to be applied onto a contact surface can be reduced; and a curable resin composition which contains the filler. A surface-treated calcium carbonate filler which comprises a synthetic calcium carbonate that has a surface treated with a fatty acid-type organic material containing a fatty acid salt and has a floc structure, said filler being characterized in that the ratio (Sr) of the amount of a fatty acid salt for which a counter ion is of monovalent and which is contained in surface-treating agents, which are substances eluted as free materials when the surface-treated calcium carbonate is refluxed with ethanol, to the total amount of the surface-treating agents is 10 to 30 wt%, and the porosity (Po) of the surface-treated calcium carbonate upon the consolidation of the surface-treated calcium carbonate is 38 to 45 wt%; and a curable resin composition which contains the filler.

IPC Classes  ?

  • C09C 3/08 - Treatment with low-molecular-weight organic compounds
  • C08K 9/04 - Ingredients treated with organic substances
  • C08L 101/00 - Compositions of unspecified macromolecular compounds
  • C09C 1/02 - Compounds of alkaline earth metals or magnesium
  • C09J 11/04 - Non-macromolecular additives inorganic
  • C09J 123/22 - Copolymers of isobuteneButyl rubber
  • C09J 133/00 - Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereofAdhesives based on derivatives of such polymers
  • C09J 183/04 - Polysiloxanes
  • C09K 3/10 - Materials not provided for elsewhere for sealing or packing joints or covers

18.

Surface treated calcium carbonate filler for resin and resin composition containing the filler

      
Application Number 13574867
Grant Number 09018278
Status In Force
Filing Date 2010-01-29
First Publication Date 2012-11-08
Grant Date 2015-04-28
Owner Maruo Calcium Co., Ltd. (Japan)
Inventor
  • Nagamatsu, Makoto
  • Kasahara, Hidemitsu
  • Sako, Kouhei
  • Hojo, Hisakazu

Abstract

Provided is a surface treated calcium carbonate filler for resins, which comprises calcium carbonate particles, the surface of which has been treated with at least one surface active agent (A) selected from the group consisting of saturated fatty acids, unsaturated fatty acids, alicyclic carboxylic acids, resin acids, and salts thereof and with at least one compound (B) having the ability to chelate alkaline earth metals, the compound (B) being selected from the group consisting of phosphonic acids, polycarboxylic acids, and salts thereof. The surface treated calcium carbonate filler for resins of the present invention deteriorates little with time, has satisfactory dispersibility in resins, and can give a sheet or film which has a satisfactory balance among durability, weatherability, strength, and thermal stability, and is useful as a battery separator or a light reflector.

IPC Classes  ?

  • C08K 9/00 - Use of pretreated ingredients
  • C08G 18/48 - Polyethers
  • C08K 9/04 - Ingredients treated with organic substances
  • C08L 23/02 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers not modified by chemical after-treatment
  • G02B 5/08 - Mirrors
  • F21V 7/22 - Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors

19.

CALCIUM CARBONATE FILLER FOR RESIN, METHOD FOR PRODUCING SAME AND RESIN COMPOSITION CONTAINING FILLER

      
Application Number JP2012059985
Publication Number 2012/141236
Status In Force
Filing Date 2012-04-12
Publication Date 2012-10-18
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Kasahara Hidemitsu
  • Sako Kouhei
  • Kosaka Tomonori
  • Kudo Homare
  • Takiyama Shigeo
  • Hojo Hisakazu

Abstract

Provided is a calcium carbonate filler for resin in which the content rate of particles having a particle size of 0.26 μm or less is 30% or less in a number particle size distribution diameter measured (Mountech Mac-VIEW) from an electron micrograph, and which satisfies the following formulas (a)-(c). (a) Dms5/Dmv5≤3 (b) 1≤Sw≤8 (m2/g) (c) Mo≤300 (ppm) Dms5: 5% diameter (μm) accumulated from a small particle side in a volume particle size distribution by a laser diffraction particle size analyzer (Malvern MASTERSIZER 2000); Dmv5: 5% diameter (μm) accumulated from a small particle side in a number particle size distribution in a particle size (Mountech Mac-VIEW) measured with an electron microscope; Sw: BET specific surface area (Mountech Macsorb) (m2/g); Mo: water content (ppm) by Karl Fischer method at 200-300°C. This calcium carbonate filler for resin has less fine powders and is adjusted to a specific particle size, and has less volatile components such as water, etc. and can solve problems of foaming, etc. even if the filler is mixed in a high concentration with a resin having a high processing temperature.

IPC Classes  ?

  • C08K 3/26 - CarbonatesBicarbonates
  • C08L 101/00 - Compositions of unspecified macromolecular compounds

20.

SURFACE-TREATED CALCIUM CARBONATE FILLER FOR RESIN AND RESIN COMPOSITION CONTAINING THE FILLER

      
Application Number JP2010051249
Publication Number 2011/092844
Status In Force
Filing Date 2010-01-29
Publication Date 2011-08-04
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Nagamatsu Makoto
  • Kasahara Hidemitsu
  • Sako Kouhei
  • Hojo Hisakazu

Abstract

Provided is a surface-treated calcium carbonate filler for resins, characterized by comprising calcium carbonate particles, the surface of which has been treated with at least one surfactant (A) selected from a group consisting of saturated fatty acids, unsaturated fatty acids, alicyclic carboxylic acids, resin acids, and salts thereof and with at least one compound (B) having the ability to chelate an alkaline-earth metal, the compound (B) being selected from a group consisting of phosphonic acids, polycarboxylic acids, and salts thereof. The surface-treated calcium carbonate filler for resins deteriorates little with time, has satisfactory dispersibility in resins, and can give a sheet or film which has a satisfactory balance among durability, weatherability, strength, and thermal stability and is useful as a battery separator or light reflector.

IPC Classes  ?

  • C08K 9/04 - Ingredients treated with organic substances
  • C08L 23/00 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers
  • C08L 101/00 - Compositions of unspecified macromolecular compounds
  • G02B 5/08 - Mirrors

21.

COMPOSITE REFLECTIVE ELEMENT FOR USE IN A ROAD-SURFACE MARKING MATERIAL, AND ROAD-SURFACE MARKING MATERIAL CONTAINING SAID COMPOSITE REFLECTIVE ELEMENT

      
Application Number JP2010071109
Publication Number 2011/065473
Status In Force
Filing Date 2010-11-26
Publication Date 2011-06-03
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Maeba Takeshi
  • Hojo Hisakazu

Abstract

Provided is a composite reflective element for use in a road-surface marking material. Said composite reflective element is highly resistant to heat, solvents, and hot water and has excellent binder adhesiveness, retroreflectivity, and visibility. The composite reflective element is characterized in that glass beads with an index of refraction between 1.5 and 2.8 and a mean diameter between 10 μm and 500 μm are affixed to the surface of a core material by means of an inorganic binder.

IPC Classes  ?

22.

FOOD ADDITIVE FOR ICE CREAM

      
Application Number JP2010070561
Publication Number 2011/062221
Status In Force
Filing Date 2010-11-18
Publication Date 2011-05-26
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Kubota Naoki
  • Yoshino Hidetake
  • Shibata Hiroshi

Abstract

Disclosed is an additive which can retain the firmness of an ice cream composition for a long period and can improve the texture of an ice cream. Specifically disclosed is a food additive for an ice cream, which comprises a needle-like or columnar inorganic material, and is characterized in that the average particle diameter (dl) of the particles is 2 to 50 μm as measured in the direction of the longer diameter on a scanning electron microscope and the aspect ratio (dl/ds) of the average particle diameter (dl) of the particles as measured in the direction of the longer diameter on a scanning electron microscope to the average particle diameter (ds) of the particles as measured in the direction of the shorter diameter on a scanning electron microscope is 5 to 100.

IPC Classes  ?

  • A23G 9/32 - Frozen sweets, e.g. ice confectionery, ice-creamMixtures therefor characterised by the composition

23.

POROUS POLYOLEFIN RESIN FOAM SHEET AND METHOD FOR PRODUCING THE SAME

      
Application Number JP2009003712
Publication Number 2010/016236
Status In Force
Filing Date 2009-08-04
Publication Date 2010-02-11
Owner
  • MARUO CALCIUM CO., LTD. (Japan)
  • ELITE SCIEN TECH (Republic of Korea)
Inventor
  • Kasahara, Hidemitsu
  • Yoon, Jae Dong

Abstract

Disclosed is a porous polyolefin resin foam sheet which is a foamed resin sheet composed of a polyolefin resin having a crystallization degree of 25-45%.  The porous polyolefin resin foam sheet is characterized in that the average cell diameter of the foamed resin sheet is 0.5-30 μm.  The porous polyolefin resin foam sheet is provided with uniform fine cells, while having a high diffuse reflectance and excellent light deterioration resistance.

IPC Classes  ?

  • C08J 9/12 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent

24.

MAGNESIUM HYDRATE COMPOSITION AND MANUFACTURING METHOD THEREOF, AND RESIN COMPOSITION AND MOLDED ARTICLE THEREOF

      
Application Number JP2009002615
Publication Number 2009/153936
Status In Force
Filing Date 2009-06-10
Publication Date 2009-12-23
Owner MARUO CALCIUM CO., LTD. (Japan)
Inventor
  • Shimizu, Seiya
  • Kobayashi, Koji

Abstract

Provided is a magnesium hydrate composition comprising magnesium hydrate particles containing iron and/or manganese and sulfur. The content (M) of the iron and/or manganese as measured using an atomic absorption spectrophotometer is in the range of 10-1,000 ppm with respect to the magnesium hydrate particles, the content (S) of the sulfur as measured using an infrared absorption method is in the range of 10-1,800 ppm with respect to the magnesium hydrate particles, and the ratio (S/M) of the content (S) of the sulfur to the content (M) of the iron and/or manganese is in the range of 1.0-1.8. The magnesium hydrate composition has excellent flame retardancy and sustainability thereof when mixed with a resin, and excellent thermal deterioration resistance and a good hue can be imparted.

IPC Classes  ?

  • C01F 5/22 - Magnesium hydroxide from magnesium compounds with alkali hydroxides or alkaline earth oxides or hydroxides
  • C08K 9/00 - Use of pretreated ingredients
  • C08L 101/00 - Compositions of unspecified macromolecular compounds
  • C09C 1/02 - Compounds of alkaline earth metals or magnesium
  • C09C 3/08 - Treatment with low-molecular-weight organic compounds
  • C09K 21/02 - Inorganic materials

25.

Filler for powder coating material and powder coating composition containing the same

      
Application Number 11991385
Grant Number 08138253
Status In Force
Filing Date 2006-09-06
First Publication Date 2009-09-10
Grant Date 2012-03-20
Owner Maruo Calcium Company Limited (Japan)
Inventor
  • Maeba, Takeshi
  • Uto, Nariatsu
  • Sakai, Takanobu

Abstract

Maximum particle diameter in particle-diameter fraction frequency distribution determined by Microtrac FRA [μm]. The filler for powder coating materials of the present invention can provide a powder coating composition for forming a coating film having excellent matte property, a smooth surface with reduced irregularities, satisfactory appearance and excellent in processability and impact resistance.

IPC Classes  ?

  • C08K 3/26 - CarbonatesBicarbonates
  • C09D 17/00 - Pigment pastes, e.g. for mixing in paints
  • B07B 1/00 - Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
  • B02C 17/00 - Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
  • B02C 17/02 - Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with perforated container
  • C09C 1/02 - Compounds of alkaline earth metals or magnesium

26.

Fine pore formation agent for porous resin film and composition containing the same for porous resin film

      
Application Number 12162893
Grant Number 07977410
Status In Force
Filing Date 2007-01-31
First Publication Date 2009-01-29
Grant Date 2011-07-12
Owner
  • Maruo Calcium Co., Ltd. (Japan)
  • Sumitomo Chemical Co., Ltd. (Japan)
Inventor
  • Nagamatsu, Makoto
  • Shimizu, Seiya
  • Kasahara, Hidemitsu
  • Hojo, Hisakazu

Abstract

5 (Ω·cm) (Ir: volume resistivity (Ω·cm). The fine pore formation agent for a porous resin film is capable of providing a resin composition giving a porous resin film useful in uses for electric parts such as capacitors and battery separators.

IPC Classes  ?

  • C08K 9/00 - Use of pretreated ingredients
  • B32B 5/16 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer formed of particles, e.g. chips, chopped fibres, powder
  • B29C 44/04 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities

27.

Particulate plant treatment composition

      
Application Number 11884789
Grant Number 08404619
Status In Force
Filing Date 2006-02-20
First Publication Date 2008-06-26
Grant Date 2013-03-26
Owner Maruo Calcium Company Limited (Japan)
Inventor
  • Kubota, Naoki
  • Taniguchi, Nobuhiro
  • Hojo, Hisakazu

Abstract

A sparingly water-soluble plant quality improver characterized by containing a polyvalent metal, an organic acid having a carboxylic group, an alkali metal and/or ammonia, and phosphate ions and/or carbonate ions. The sparingly water-soluble plant quality improver inhibits or alleviates physiological disorders of plants and further has the function of improving qualities of the plants, such as sugar content and acidity. It is also characterized in that it causes little fruit surface soiling to heighten the merchandice value, and that it is lowly phytotoxic and highly safe.

IPC Classes  ?

  • A01N 59/00 - Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
  • A01N 25/00 - Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of applicationSubstances for reducing the noxious effect of the active ingredients to organisms other than pests

28.

MICROPORE FORMING AGENT FOR POROUS RESIN FILM AND COMPOSITION FOR POROUS RESIN FILM CONTAINING THE AGENT

      
Application Number JP2007000043
Publication Number 2007/088707
Status In Force
Filing Date 2007-01-31
Publication Date 2007-08-09
Owner
  • MARUO CALCIUM CO., LTD. (Japan)
  • SUMITOMO CHEMICAL CO., LTD. (Japan)
Inventor
  • Nagamatsu, Makoto
  • Shimizu, Seiya
  • Kasahara, Hidemitsu
  • Hojo, Hisakazu

Abstract

A micropore forming agent for porous resin film composed of inorganic particles, satisfying the relationships (a) 0.1 ≤ D50 ≤ 1.5 騜m (D50: average particle diameter of cumulative weight 50% calculated from the large particle side in microtrack FRA), (b) Da ≤ 20 騜m (Da: maximum particle diameter in microtrack FRA), (c) 3 ≤ Sw ≤ 60 m2/g (Sw: BET specific surface area in nitrogen adsorption method) and (d) Ir ≥ 1.0×105 俑 cm (Ir: volume resistivity of hydrochloric acid insoluble content). Using this micropore forming agent for porous resin film, there can be provided a resin composition that would provide a porous resin film suitable for use in electrical applications, such as capacitor and battery separator.

IPC Classes  ?

  • C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
  • C01B 25/32 - Phosphates of magnesium, calcium, strontium, or barium
  • C01F 5/14 - Magnesium hydroxide
  • C01F 11/18 - Carbonates
  • H01M 2/16 - Separators; Membranes; Diaphragms; Spacing elements characterised by the material

29.

FILLER FOR POWDER COATING MATERIAL AND POWDER COATING COMPOSITION CONTAINING THE SAME

      
Application Number JP2006318102
Publication Number 2007/029869
Status In Force
Filing Date 2006-09-06
Publication Date 2007-03-15
Owner MARUO CALCIUM COMPANY LIMITED (Japan)
Inventor
  • Maeba, Takeshi
  • Uto, Nariatsu
  • Sakai, Takanobu

Abstract

A filler for powder coating materials which comprises inorganic particles satisfying the following relationships (1) to (5) and having a Mohs hardness of 1-4. 2≤A≤30 (1): cumulative 50-vol.% diameter (median diameter) determined by Microtrac FRA ⏧쎽m] 0≤B≤35 (2): cumulative undersize for one-half the cumulative 50-vol.% diameter (median diameter) ⏧vol.%] 1≤C≤25 (3): value obtained by dividing cumulative 90-vol.% diameter determined by FRA by cumulative 10-vol.% diameter ⏧-] 1≤D≤6 (4): value obtained by dividing cumulative 75-vol.% diameter determined by FRA by cumulative 25 vol.% diameter ⏧-] E≤100 (5): maximum particle diameter in particle-diameter fraction frequency distribution determined by FRA ⏧쎽m] The filler for powder coating materials can provide a powder coating composition which forms a coating film having excellent matte properties, a smooth surface with reduced irregularities, and a satisfactory appearance and excellent in processability and impact resistance.

IPC Classes  ?

30.

PLANT QUALITY IMPROVER AND PROCESS FOR PRODUCING THE SAME

      
Application Number JP2006302953
Publication Number 2006/090666
Status In Force
Filing Date 2006-02-20
Publication Date 2006-08-31
Owner Maruo Calcium Company Limited (Japan)
Inventor
  • Kubota, Naoki
  • Taniguchi, Nobuhiro
  • Hojo, Hisakazu

Abstract

A sparingly water-soluble plant quality improver characterized by comprising a polyvalent metal, an organic carboxylic acid, an alkali metal and/or ammonia, and phosphate ions and/or carbonate ions. The sparingly water-soluble plant quality improver inhibits or alleviates physiological disorders of plants and further has the function of improving qualities of the plants, such as sugar content and acidity. It is also characterized in that it causes little fruit surface soiling to heighten the merchandise value, and that it is lowly phytotoxic and highly safe.

IPC Classes  ?

  • A01N 59/06 - AluminiumCalciumMagnesiumCompounds thereof
  • A01G 7/00 - Botany in general
  • A01N 25/12 - Powders or granules
  • A01N 37/04 - Saturated carboxylic acids or thio-analogues thereofDerivatives thereof polybasic
  • A01N 59/00 - Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
  • A01N 59/04 - Carbon disulfideCarbon monoxideCarbon dioxide
  • A01N 59/16 - Heavy metalsCompounds thereof
  • A01N 59/26 - PhosphorusCompounds thereof
  • A01G 7/06 - Treatment of growing trees or plants, e.g. for preventing decay of wood, for tingeing flowers or wood, for prolonging the life of plants
  • C05G 3/00 - Mixtures of one or more fertilisers with additives not having a specifically fertilising activity

31.

CALFOOD

      
Serial Number 76085693
Status Registered
Filing Date 2000-07-07
Registration Date 2005-07-12
Owner Maruo Calcium Company Limited (Japan)
NICE Classes  ?
  • 01 - Chemical and biological materials for industrial, scientific and agricultural use
  • 05 - Pharmaceutical, veterinary and sanitary products
  • 29 - Meat, dairy products, prepared or preserved foods
  • 30 - Basic staples, tea, coffee, baked goods and confectionery
  • 32 - Beers; non-alcoholic beverages

Goods & Services

Chemicals, namely, inorganic salts for use in the plastic industry, for use in science, photography, agriculture, horticulture and forestry Pharmaceutical preparations, namely, nutrient supplements, tonics, namely, medical tonics for the prevention and treatment of osteoporosis, and medicinal alternatives, namely, calcium preparations; food for infants [ Meat, fish for food purposes, tofu, boiled fish paste, poultry and game; meat extracts; preserved, dried and cooked fruits and vegetables, jellies, jams, fruit sauces; milk and milk products, namely, cream, cheese, butter, lactic drinks, powdered milk, condensed milk, soy bean milk ] [ Coffee, tea, cocoa, artificial coffee; flour and preparations made from cereals, namely, bread, pastry and confectionery cakes, honey, chips for baking, biscuits; condiments, namely, ketchup, mustard, mayonnaise, sauces, salad dressings, honey, spices ] [ Mineral and aerated water and other non-alcoholic drinks, namely, fruit drinks and fruit juices; syrups and other preparations, namely, powders and liquids for making beverages, namely, lemonades, cider, isotonic beverages, non-alcoholic nectars, vegetable juices, orange juices, grape juice, pineapple juice ]