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US 5,474,702 AGranted
Stable aqueous suspensions of zeolites, methods of producing same, and use of the suspensions
AssigneeCoatex
InventorsJean-Bernard Egraz, Henri Grondin, Jean-Marc Suau
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Abstract
A stable aqueous zeolite suspension containing, as stabilizing agent, a copolymer comprising units of (i) at least one acrylic monomer having a carboxylic acid group, (ii) at least one acrylic and/or vinyl monomer not having a carboxylic acid group, and (iii) at least one oxyalkylated monomer having ethylenic unsaturation, and terminated by a fatty hydrophobic chain having 12-40 C atoms.
Claims5
A method of preparing a detergent composition comprising:
- mixing a stable aqueous zeolite composition with the ingredients of a detergent composition, said stable aqueous zeolite composition comprising:
- in addition to one or more natural or synthetic zeolites in water, a stabilizing agent which is a copolymer comprised of:
- (a) units of at least one acrylic monomer having a carboxylic acid group selected from the group consisting of (meth)acrylic, itaconic, cinnamic, crotonic, isocrotonic, fumaric, and maleic acids, maleic anhydride, and aconitic, mesaconic, sinapic, undecylenic, angelic, and hydroxyacrylic acids, and derivatives thereof;
- (b) units of at least one acrylic acid group selected from the group consisting of the esters, amides, and nitriles of (meth)acrylic, itaconic, cinnamic, crotonic, isocrotonic, fumaric, and maleic, aconitic, mesaconic, sinapic, undecylenic, angelic, and hydroxyacrylic acid, and derivatives thereof, and vinyl acetate, styrene, .alpha.-methylstyrene, diisobutylene, vinylpyrrolidone, and vinylcaprolactam;
- (c) units of at least one oxyalkylated monomer having ethylenic unsaturation and terminated by a hydrophobic chain and having formula I:
- ##STR3## where m and p represent numbers of oxyalkylene groups, each .ltoreq.100;
- n represents the number of oxyethylene groups, .ltoreq.100;
- q represents a number at least equal to 1, such that a(n+m+p).ltoreq.100;
- R.sub.1 represents hydrogen or a methyl group;
- R.sub.2 represents hydrogen or a methyl group;
- R represents an unsaturated polymerizable group selected from the group consisting of vinyl group containing moieties, methacryloyl, maleoyl, itaconoyl, crotonoyl, an unsaturated urethane moiety, hemiester maleoyl, hemiester itaconoyl, CH.sub.2 .dbd.CHCH.sub.2 --O--, methacrylamide and unsubstituted methacrylamide;
- and
- R represents a hydrophobic group with a fatty chain selected from the groups consisting of alkyl, alkylaryl, aralkyl, and aryl groups, linear or branched, each having 12-40 C atoms.
10 more elements
A method of preparing a sequestering agent comprising mixing a stable aqueous zeolite suspension with the ingredients of a composition to be sequestered, said stable aqueous zeolite suspension comprising:
- in addition to one or more natural or synthetic zeolites in water, a stabilizing agent which is a copolymer comprised of:
- (a) units of at least one acrylic monomer having a carboxylic acid group selected from the group consisting of (meth)acrylic, itaconic, cinnamic, crotonic, isocrotonic, fumaric, and maleic acids, maleic anhydride, and aconitic, mesaconic, sinapic, undecylenic, angelic, and hydroxyacrylic acids, and derivatives thereof;
- (b) units of at least one acrylic acid group selected from the group consisting of the esters, amides, and nitriles of (meth)acrylic, itaconic, cinnamic, crotonic, isocrotonic, fumaric, and maleic, aconitic, mesaconic, sinapic, undecylenic, angelic, and hydroxyacrylic acid, and derivatives thereof, and vinyl acetate, styrene, .alpha.-methylstyrene, diisobutylene, vinylpyrrolidone, and vinylcaprolactam;
- (c) units of at least one oxyalkylated monomer having ethylenic unsaturation and terminated by a hydrophobic chain and having formula I:
- ##STR5## where m and p represent numbers of oxyalkylene groups, each .ltoreq.100;
- n represents the number of oxyethylene groups, .ltoreq.100;
- q represents a number at least equal to 1, such that a(n+m+p).ltoreq.100;
- R represents hydrogen or a methyl group;
- R.sub.2 represents hydrogen or a methyl group;
- R represents an unsaturated polymerizable group selected from the group consisting of vinyl group containing moieties, methacryloyl, maleoyl, itaconoyl, crotonoyl, an unsaturated urethane moiety, hemiester maleoyl, hemiester itaconoyl, CH.sub.2 .dbd.CHCH.sub.2 --O--, methacrylamide and unsubstituted methacrylamide;
- and
- R.sup.1 represents a hydrophobic group with a fatty chain selected from the groups consisting of alkyl, alkylaryl, aralkyl, and aryl groups, linear or branched, each having 12-40 C atoms.
9 more elements
Dependencies are inferred from the claim text.