Abstract:
PROBLEM TO BE SOLVED: To provide novel polymers containing carboxyl groups and polyalkylene ether side-chains. SOLUTION: The water-soluble or water-dispersible polymers containing carboxyl groups and the side-chains represented by formula (I) is obtained by radically copolymerizing the polymer having carboxyl groups on the monomers to be polymerized, 3 to 50 wt.% of an ethylenic unsaturated monomers A selected from the group consisting of ethylenic unsaturated 3-6C mono-carboxylic acids and their salts, 50 to 97 wt.% of an ethylenic unsaturated monomers B bearing the side-chains of formula I in the presence of 0.1 to 50 wt.% of a phosphorus-containing compounds such as phosphinic acid or phosphonic acid. The resultant polymer has a weight average molecular (Mw) of 5000 to 150000 dalton. The polymer has favorite property as an additive for mineral building materials. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
The invention relates to a method for producing water soluble polymers of esters from ethylenically unsaturated carboxylic acids and polyalkylene glycols by azeotropic esterification of ethylenically unsaturated carboxylic acids with polyalkylenglycols which are closed at one side by end groups. Esterification is performed in the presence of organic solvents which together with water form an azeotrope of at least 85 weight %. Subsequent radical polymerization is performed on the esters thus obtained thereby optionally together with other ethylenically unsaturated monomers in an aqueous medium. The organic solvent is azeotropically strip distilled out of the reaction mixture during the polymerization process and strip distilled water is reintroduced or the amount of water strip distilled out of the reaction mixture is replaced by adding fresh water.
Abstract:
Heterocyclic compounds of formula (I), where X stands for O, S or the N-R3 grouping, in which R3 stands for hydrogen, C¿1?-C25 alkyl, C1-C25 acyl or an aryl group with up to 12 carbon atoms, Y stands for CH or N, R?1¿ stands for X = S or N-R3, hydrogen, a C¿1?-C25 alkyl or C2-C25 alkenyl group or a phenyl residue which can be additionally substituted by one or two C1-C4 alkyl, C1-C4 alkoxy, hydroxyl, carboxyl, sulpho, amino, C1-C4 acylamino, nitro or cyano groups or chlorine or bromine atoms, whereby for two substituents these may be the same or different, R?1¿ stands for X = O, phenyl, o-, m- or p-tolyl, p-chlorphenyl, m-nitrophenyl, m-methoxyphenyl or m-methylsulphonylphenyl, R2 stands for X = S or NR3, hydrogen, a C¿1?-C4 alkyl, C1-C4 alkoxy, hydroxyl, carboxyl, sulpho, amino or C1-C4 acylamino group or a chlorine or bromine atom and R?2¿ stands for X = O or hydrogen, can be used as bleach activators or optical lighteners in washing and cleaning agents.
Abstract:
The present invention relates to the use of water soluble or water dispersible polymers containing carboxyl groups, optionally in latent form, and side-chains of general formula (I): -X-Y-[-O-(-Alk-O)n-R]k as additives in mineral building materials, wherein X, Y, Alk, R, n and k have the meanings cited in Claim 1. Said polymers can be obtained by polymerizing ethylenically unsaturated monomers in the presence of compounds containing phosphorus and, optionally, by additional polymer-analogous transformation. The invention further relates to the production of said polymers and the use thereof. Also described are polymers, which can be obtained by polymerizing aromatic vinyl compounds, olefins, cycloolefins and/or dienes, as D monomers and anhydrides of ethylenically unsaturated dicarboxylic acids as E monomers, and which can be used both as parent compounds for the above-mentioned polymers and as additives for mineral building materials.00000
Abstract:
The invention concerns mixtures of (I) polymers of monoethylenically unsaturated dicarboxylic acids with a molecular weight of 200 to 5,000 and (II) (1) copolymers with a molecular weight of 10,000 to 150,000 consisting of (a) 10 to 70 % by wt. of monoethylenically unsaturated C4 to C8 dicarboxylic acids or salts thereof and (b) 30 to 90 % by wt. of monoethylenically unsaturated C3 to C10 monocarboxylic acids and/or salts thereof, (2) homopolymers and copolymers with a molecular weight of 1,000 to 500,00 consisting of monoethylenically unsaturated C3 to C10 monocarboxylic acids, (3) graft polymers with a molecular weight of 5,000 to 150,000 obtained by the radical-initiated graft polymerization of (A) monoethylenically unsaturated C3 to C10 carboxylic acids, their anhydrides and/or their salts in the presence of (B) mono-, oligo- or polysaccharides derivatives thereof, in the ratio by weight of A:B of (95 to 100):(5 to 80) and/or (4) polyaminocarboxylic acids and/or polymers containing aminocarboxylic groups, the mixtures containing components (I) and (II) in the ratio by weight of 10:0.5 to 0.5:10. The invention also concerns the use of such mixtures as additives in phosphate-free or phosphate-reduced textile-washing agents or as dispersants and deposit-prevention agents in cleaning agents for hard surfaces.
Abstract:
Polymers containing acid groups are modified by reaction of(a) polymers which comprise at least 5% by weight of a copolymerized monoethylenically unsaturated monomer containing acid groups, have molar masses of from 200 to 100,000 and are obtainable by free-radical polymerization of monoethylenically unsaturated acids in aqueous solution in the presence or absence of other monoethylenically unsaturated monomers and in the presence of at least 4% by weight, based on the monomers used in the polymerization, of a water-soluble sulfur compound in which the sulfur is in the oxidation state +4,with(b) polyalkylene glycols which are end-capped at one end, alkylpolyalkylene glycol amines or mixtures thereof, or mixtures of at least one of the two compounds specified with up to 30% by weight, based on the mixtures, of ammonia, amines, alcohols, hydroxycarboxylic acids or aminocarboxylic acidsat up to 250° C.
Abstract:
The invention relates to a method for modifying acid group containing polyme rs by reacting, at temperatures of up to 250 ~C, a) polymers that contain polymerized into them at least 5 wt.- % of a monomer that contain monoethylenically unsaturated acid groups, that have a molecular weight ranging between 200 to 100.000 and that are obtainable by radical polymerization of monoethylenically unsaturated acids, optionally in the presence of another monoethylenically unsaturated monomer in an aqueous solution in the presence of at least 4 wt.- %, based on the monomers used fo r the polymerization, of a water-soluble sulfur composition in which the sulfu r has the oxidation number +4, with b) unilaterally end-group terminated polyalkylene glycols, alkylpolyalkyene glycolamines or the mixtures thereof. The invention also relates to the mixtures of at least one of said compounds with up to 30 wt.- %, based on the mixtures, of ammonia, amines, alcohols, hydroxycarboxylic acids or aminocarboxylic acids.
Abstract:
The present invention relates to the use of water soluble or water dispersible polymers containing carboxyl groups, optionally in latent form, and side-chains of general formula (I) -X-Y-[-O-(-Alk-O) n -R] k as additives in mineral building materials, wherein X, Y, Alk, R, n and k have the meanings cited in claim 1. Said polymers can be obtained by polymerizing ethylenically unsaturated monomers in the presence of compounds containing phosphorus and, optionally, by additional polymer-analogous transformation. The invention further relates to the production of said polymers and the use thereof. Also described are polymers, which can be obtained by polymerizing aromatic vinyl compounds, olefins, cycloolefins and/or dienes, as D monomers and anhydrides of ethylenically unsaturated dicarboxylic acids as E monomers and which can be used both as parent compounds for the above-mentioned polymers and as additives for mineral building materials.