Use in a machine dishwashing and rinsing composition of an amphoteric copolymer as soil antiredeposition agent
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Abstract
Use as a soil antiredeposition agent (soil repellent) in a two-in-one or three-in-one washing and rinsing composition for the machine cleaning of kitchen- and tableware of a water-soluble or water-dispersible amphoteric copolymer derived (a) from at least one monomer of the diallyldimethylammonium chloride type (b) and from at least one (potentially) anionic monomer, the a/b molar ratio being between 15/85 and less than 50/50. Method of enhancing the soil antiredeposition properties of a two-in-one or three-in-one washing and rinsing composition for the machine cleaning of kitchen- and tableware by adding to the said composition an effective amount of the said copolymer.
28 Citations
34 Claims
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1-22. -22. (canceled)
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23. 2-in-1 or 3-in-1 washing and rinsing formulation for machine dishwashing, comprising:
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at least 20%, by weight of sodium tripolyphosphate;
a sodium silicate with a SiO2/Na2O molar ratio ranging from 1 to 4, in an amount less than 15% by weight;
from 0.02 to 0.5% by weight of an amphoteric copolymer comprising in the form of polymerized units;
(a) at least one monomeric compound of general formula I;
wherein;
R1 and R4 represent independently of one another a hydrogen atom or a linear or branched C1-C6 alkyl group;
R2 and R3 represent independently of one another an alkyl, hydroxyalkyl or aminoalkyl group wherein the alkyl group is a linear or branched C1-C6 chain;
n and m are integers of between 1 and 3; and
X represents a counterion compatible with the water-soluble or water-dispersible nature of the polymer;
(b) at least one hydrophilic monomer which carries an acidic function, is copolymerizable with (a) and is capable of undergoing ionization in an application medium, (c) optionally, at least one ethylenically unsaturated hydrophilic monomeric compound of neutral charge which carries one or more hydrophilic groups and is copolymerizable with (a) and (b), and wherein the a/b molar ratio is between 15/85 and less than 50/50; and
from 0.2 to 5%, by weight of nonionic surfactant. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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24. 2-in-1 or 3-in-1 washing and rinsing formulation according to claim 42, comprising:
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from 25 to 60%, by weight of sodium tripolyphosphate, a sodium silicate with an SiO2/Na2O molar ratio ranging from 1.7 to 2.8, and in an amount ranging from 1 to less than 5% by weight, and from 0.2 to 5%, by weight of nonionic surfactant. - View Dependent Claims (25)
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Specification