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Found results for
 patents
1.
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METHOD FOR PRODUCTION OF METHYL METHACRYLATE BY OXIDATIVE ESTERIFICATION USING A HETEROGENEOUS CATALYST
| Application Number |
US2018050598 |
| Publication Number |
2019/060192 |
| Status |
In Force |
| Filing Date |
2018-09-12 |
| Publication Date |
2019-03-28 |
| Owner |
- DOW GLOBAL TECHNOLOGIES LLC (USA)
- DOW HYDROCARBONS AND RESOURCES LLC (USA)
- ROHM AND HAAS COMPANY (USA)
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| Inventor |
- Herron, Jeffrey
- Arriola, Daniel J.
- Blaylock, D. Wayne
- Lee, Wen-Sheng
- Sussman, Victor J.
- Hickman, Daniel A.
- Limbach, Kirk W.
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Abstract
A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein oxygen concentration at a reactor outlet is from 1 to 7.5 mol% and wherein pH at a reactor outlet is no greater than 7.5.
IPC Classes ?
- C07C 67/39 - Preparation of carboxylic acid esters by oxidation of groups which are precursors for the acid moiety of the ester
- C07C 69/54 - Acrylic acid estersMethacrylic acid esters
- B01J 23/44 - Palladium
- B01J 23/52 - Gold
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2.
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METHOD FOR PREPARATION OF HETEROGENEOUS CATALYSTS
| Application Number |
US2018039230 |
| Publication Number |
2019/022885 |
| Status |
In Force |
| Filing Date |
2018-06-25 |
| Publication Date |
2019-01-31 |
| Owner |
- DOW GLOBAL TECHNOLOGIES LLC (USA)
- DOW HYDROCARBONS AND RESOURCES LLC (USA)
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| Inventor |
- Sussman, Victor J.
- Lee, Wen-Sheng
- Herron, Jeffrey
- Blaylock, D. Wayne
- Arriola, Daniel J.
- Heitsch, Andrew
- Kirilin, Alexey
- Clements, Heidi
- Schmucker, Abrin L.
- Hickman, Daniel A.
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Abstract
21818 thiol comprising at least one hydroxyl or carboxylic acid substituent; to form a wet particle and (b) removing water from the wet particle by drying followed by calcination to produce the catalyst.
IPC Classes ?
- B01J 37/02 - Impregnation, coating or precipitation
- B01J 23/52 - Gold
- C07C 67/39 - Preparation of carboxylic acid esters by oxidation of groups which are precursors for the acid moiety of the ester
- C07C 69/54 - Acrylic acid estersMethacrylic acid esters
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3.
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A METHOD FOR PRODUCTION OF METHYL METHACRYLATE BY OXIDATIVE ESTERIFICATION USING A HETEROGENEOUS CATALYST
| Application Number |
US2018039231 |
| Publication Number |
2019/022886 |
| Status |
In Force |
| Filing Date |
2018-06-25 |
| Publication Date |
2019-01-31 |
| Owner |
- ROHM AND HAAS COMPANY (USA)
- DOW GLOBAL TECHNOLOGIES LLC (USA)
- DOW HYDROCARBONS AND RESOURCES LLC (USA)
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| Inventor |
- Kraptchetov, Dmitri A.
- Limbach, Kirk W..
- Hickman, Daniel A.
- Herron, Jeffrey
- Olson, Kurt W.
- Blaylock, D. Wayne
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Abstract
A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting in a tubular reactor having at least four zones a mixture comprising methacrolein, methanol, oxygen and a base with a catalyst bed of heterogeneous catalyst comprising a support and a noble metal, wherein reaction zones comprising catalyst beds alternate with mixing zones not comprising catalyst beds.
IPC Classes ?
- C07C 67/39 - Preparation of carboxylic acid esters by oxidation of groups which are precursors for the acid moiety of the ester
- C07C 69/54 - Acrylic acid estersMethacrylic acid esters
- B01J 8/22 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles with liquid as a fluidising medium gas being introduced into the liquid
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4.
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A METHOD FOR PRODUCTION OF METHYL METHACRYLATE BY OXIDATIVE ESTERIFICATION USING A HETEROGENEOUS CATALYST
| Application Number |
US2018039235 |
| Publication Number |
2019/022888 |
| Status |
In Force |
| Filing Date |
2018-06-25 |
| Publication Date |
2019-01-31 |
| Owner |
- ROHM AND HAAS COMPANY (USA)
- DOW GLOBAL TECHNOLOGIES LLC (USA)
- DOW HYDROCARBONS AND RESOURCES LLC (USA)
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| Inventor |
- Limbach, Kirk W..
- Kraptchetov, Dmitri A.
- Frick, Christopher D.
- Hickman, Daniel A.
- Herron, Jeffrey
- Olson, Kurt D.
- Blaylock, D. Wayne
- Sussman, Victor J.
- Lee, Wen-Sheng
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Abstract
A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein said catalyst has an average diameter of at least 200 microns and at least 90 wt% of the noble metal is in the outer 70% of catalyst volume, and wherein oxygen concentration at a reactor outlet is from 0.5 to 7.5 mol%.
IPC Classes ?
- C07C 67/39 - Preparation of carboxylic acid esters by oxidation of groups which are precursors for the acid moiety of the ester
- C07C 69/54 - Acrylic acid estersMethacrylic acid esters
- B01J 23/52 - Gold
- B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
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