Dishwasher detergents comprising specific polymers
View Patent ↗The present invention relates to detergents and rinse agents for machine dishwashing and to supply forms which combine detergent and rinse agent containing certain polymers in a single product comprising at least one polymer modified with phosphorus-containing groups, characterized in that the pH value of a 1% by weight solution of the anionic polymer in distilled water at 20° C. is less than pH 6.
1. A machine dishwasher detergent comprising (a) at least one polymer comprised of a terminal phosphorus-containing groups, wherein the pH of a 1% by weight solution of the polymer in distilled water is below 6 at 20°C.; and (b) a polymer comprising an unsaturated carboxylic acid and an unsaturated sulfonic acid.
2. The machine dishwasher detergent of claim 1 , wherein the polymer (a) is a copolymer comprised of (i) unsaturated carboxylic acids; and (ii) phosphate-containing monomers; and (iii) optionally additional ionic or nonionogenic monomers.
3. The machine dishwasher detergent of claim 1 , wherein the polymer (a) is a copolymer comprised of (i) unsaturated carboxylic acids; (ii) phosphonate containing monomers and; (iii) optionally further ionic or nonionogenic monomers.
4. The machine dishwasher detergent of claim 1 , wherein the polymer (a) is a copolymer comprised of (i) unsaturated carboxylic acids; (ii) phosphite containing monomers and; (iii) optionally further ionic or nonionogenic monomers.
5. The machine dishwasher detergent of claim 1 , wherein the polymer (a) is a copolymer comprised of (i) unsaturated carboxylic acids; (ii) phosphine oxide-containing monomers and; (iii) optionally further ionic or nonionogenic monomers.
6. The machine dishwasher detergent of claim 1 , wherein the amount of the polymer (a) is from 0.1 to 20% by weight.
7. The machine dishwasher detergent of claim 1 , wherein the mean molar mass of the polymer (a) is from 1,000 to 10,000,000 gmol.sup−1.
8. The machine dishwasher detergent of claim 1 , wherein the degree of polymerization of the polymer (a) is from 10 to 10,000.
9. The machine dishwasher detergent of claim 2 , wherein the molar ratio of monomers (i) to (ii) is from 1:1 to 200.
10. The machine dishwasher detergent of claim 2 , wherein the phosphorus content of the copolymer is from 0.5 to 5.0% by weight.
11. The machine dishwasher detergent of claim 2 , wherein the content the monomer (iii) in the copolymer is equal to or less than 20 mol %.
12. The machine dishwasher detergent of claim 1 , further comprising one or more additional polymer selected from the group consisting of cationic polymer, one or more amphoteric polymer, and combinations thereof.
13. The machine dishwasher detergent of claim 12 , wherein the amount of the additional polymer is from 0.1 to 20% by weight.
14. The machine dishwasher detergent of claim 1 , wherein polymer (b) further contains ionic or nonionogenic monomers.
15. The machine dishwasher detergent of claim 1 , further comprising one or more surfactants.
16. The machine dishwasher detergent of claim 15 , wherein the surfactant is a nonionic surfactant in amount of from 0.1 to 20% by weight.