A method for inhibiting the formation, deposition and adherence of calcium salt scale to metallic and other surfaces in the equipment, vessels and/or piping of a chemical pulp process facility comprising adding an effective scale inhibiting amount of a composition to the alkaline aqueous mixture in the digester of said chemical pulping process. Said composition consists of at least one phosphonate component (I) and at least one component (II) consisting of at least one carboxylated fructan compound.
D21C 11/10 - Concentrating spent liquor by evaporation
C02F 5/10 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
C02F 5/14 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
D21C 9/00 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters
C02F 103/28 - Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
The invention relates to a cleaning composition with improved stain removal. The alkaline composition contains a hydrolysable dispersing polymer which is selected from carboxylated fructans and one or more biodegradable aminocarboxylate chelating agents.
A process for pulp bleaching is disclosed wherein an amino acid phosphonic acid is used together with a bleaching agent, pH regulants and pH buffers for pulp treatment in an aqueous medium. The bleaching agent can be represented by oxidative and reductive bleaching agents. The oxidative bleach treatment is conducted in alkaline medium whereas the reductive treatment is conducted in mildly acid medium.
A method for inhibiting the formation, deposition and adherence of calcium salt scale to metallic and other surfaces in the equipment, vessels and/or piping of a chemical pulp process facility comprising adding an effective scale inhibiting amount of a composition to the alkaline aqueous mixture in the digester of said chemical pulping process. Said composition consists of at least one phosphonate component (I) and at least one component (II) consisting of at least one carboxylated fructan compound.
C02F 5/10 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
C02F 5/12 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
C02F 5/14 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
Solid surface treatment compositions are disclosed containing amine neutralized phosphonates, surface active agents, conventional additives and optional ingredients. The amine neutralizing agent is represented by a binary system of one more hydrophobic and one more hydrophilic species which species are used in selected proportions.
Liquid surface treatment compositions are disclosed containing a surface-active agent, an amine neutralized phosphonic acid and water. The amine neutralizing agent is represented by a combination of two structurally different amine species, a first more hydrophobic species and a second more hydrophilic species having distinct HLB values. The HLB value of the hydrophobic species is smaller, by several units on the HLB scale, compared to the HLB value of the hydrophobic species. The compositions are found to be particularly beneficial in relation to the removal of stubborn greasy stains.
The invention relates to a wash and cleaning composition for cleaning surfaces and subjects, preferably for the use in industrial and institutional applications, comprising a mixture of: - aminotrimethylene phosphonic acid ("ATMP") and/or the salt of ATMP as one component, and - as the second component - diethylene triamine penta (methylene phosphonic acid) ("DETPMPA"), and/or the salt of DETPMPA, and optionally and additionally as a third component - (i) phosphonobutane tricarboxylic acid ("PBTC") and/or the salt of PBTC, or (ii) homopolymer maleic anhydride ("HPMA") and/or the salt of HPMA, or (iii) a mixture of (i) and (ii); or - N-oxide of ATMP and/or the salt of the N-oxide of ATMP as one component, and PBTC and/or the salt of PBTC as a second component; or - hexamethylenediamine tetra(methylene phosphonic acid) ("HDTMP") and/or the salt of HDTMP as one component, and - as a second component - (i) N,N'-bis-(3- aminopropyl)-ethylenediamine hexa methylene phosphonic acid ("NEHMP"), and/or the salt of NEHMP, or (ii) bis(hexamethylene) triamine phosphonic acid ("BHMT") and/or the salt of BHMT, or (iii) a mixture of (i) and (ii). The wash and cleaning composition shows at least the same good effect in chelating calcium compared with NTA and EDTA, and the chemicals used for substituting NTA as well as EDTA show even better washing and cleaning properties when used in much lower concentration.
C02F 5/14 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
A method of secondary oil recovery is disclosed wherein from 0.1 to 100 000 ppm of a medium soluble aminoalkylene phosphonic acid amine salt are used wherein both the aminoalkylene phosphonic acid moiety and the amine moiety are selected from a specifically defined class of compounds. The substantially medium soluble aminoalkylene amine phosphonates exhibit a significantly improved compatibility with the recovery medium and thus can propagate fairly freely into the medium and consequently cover a largely extended rock surface before being subject to precipitation in the form of a medium insoluble scale inhibitor.The amine compound is represented by combinations of structurally different compounds.
C09K 8/528 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
C09K 8/584 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
C09K 8/60 - Compositions for stimulating production by acting on the underground formation
Surface treatment compositions containing selected phosphonic acid compounds are disclosed. The compositions contain major levels of surface-active agents in combination with additive levels of the phosphonic acid compounds, and, in accordance with needs and objectives, conventional optional ingredients and additive agents. The inventive compositions can provide significant performance benefits, among others novel synergies and eminently desirable regulatory and environmental acceptability.
This invention discloses surface treatment, in particular cleaning, compositions containing, as a core ingredient combination, a binary active system comprising, expressed in relation to the sum (100 %) of the actives in said binary systema major level ofsurface active agenttogether with a lower level of a selected sugar phosphonate. The compositions can contain, usually contain, conventional additives and additives in art established levels for their known functionalities.
A method for securing the use of an aqueous medium under any substantial exclusion of metal ion interference is disclosed. A phosphonic acid compound containing: a selected phosphonate moiety and a moiety selected from a limited number of species; or hydrocarbon chains containing aminoalkylene phosphonic acid substituents; or alkylamino alkylene phosphonic acids containing an active moiety embodying N, O, and S. The technology can, by way of illustration, be used in numerous applications including secondary oil recovery, scale inhibition, industrial water treatment, paper pulp bleaching, dispersant treatment, sequestering application, brightness reversion avoidance and paper pulp treatment.
C02F 5/14 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
C02F 5/12 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
C02F 103/28 - Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
C02F 103/10 - Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
patents
