Granted Patent B2

US 10,357,444 · App. 15/909,216 · Granted Jul 23, 2019

Abstract

Claims (25)

1. A composition, comprising:

an anionic surfactant,

a zwitterionic surfactant,

a superhydrophilic amphiphilic copolymer having the formula:

wherein an “SRU” is a superhydrophilic repeat unit as defined herein, an “ARU” is an amphiphilic repeat unit as defined herein, an “HRU” is a hydrophilic repeat unit as defined herein, wherein s≥2, a>0, h≥0, and the total number of repeat units, s+a+h is between 4 and about 1000,

an organic acid; and

a polymer comprising a non-hydrophobically modified alkali-swellable emulsion polymer,

wherein said non-hydrophobically modified alkali-swellable emulsion polymer is present in an amount of about 0.1% to 5% by weight, and

wherein said composition has an NTU value of 95 or less, a yield value of about 0.1 Pascal or more and a pH of from about 3 to about 6.5.

2. The composition of claim 1 comprising from about 0.5% to about 2.5% by weight of said non-hydrophobically modified alkali-swellable emulsion polymer.

3. The composition of claim 1 comprising from about 0.75% to about 2% by weight of said non-hydrophobically modified alkali-swellable emulsion polymer.

4. The composition of claim 1 wherein said non-hydrophobically modified alkali-swellable emulsion polymer comprises an acrylates (co)polymer comprising one or more monomers selected from the group consisting of (meth)acrylic acid, alkyl-esters of (meth)acrylic acid, hydroxyalkyl-esters and alkoxyalkyl-esters.

5. The composition of claim 4 comprising from about 5% to about 80% by weight of said alkyl-ester (meth)acrylate monomer.

6. The composition of claim 5 comprising from about 10% to about 70% by weight of said alkyl-ester (meth)acrylate monomer.

7. The composition of claim 1 wherein said non-hydrophobically modified alkali-swellable emulsion polymer further comprises at least one monomer comprising at least one acid moiety exhibiting a pKa value lower than that of methacrylic acid.

8. The composition of claim 7 comprising from about 0.5% to about 80% by weight of said monomer containing at least one acid moiety exhibiting a pKa value lower than that of methacrylic acid.

9. The composition of claim 7 comprising from about 0.5% to about 60% by weight of said monomer containing at least one acid moiety exhibiting a pKa value lower than that of methacrylic acid.

10. The composition of claim 7 wherein the acid moiety is selected from the group consisting of a sulfonate group and a carboxylic group.

11. The composition of claim 1 having an NTU of about 75 or less.

12. The composition of claim 1 having a yield stress of 1 Pa or more.

13. The composition of claim 1 having a pH of from about 3 to about 5.5.

14. The composition of claim 1 comprising from about 1% to 25% by weight of said anionic surfactant.

15. The composition of claim 1 comprising from about 1% to about 25% by weight of said zwitterionic surfactant.

16. The composition of claim 1 comprising from about 0.1% to about 30% by weight of active of said superhydrophilic amphiphilic copolymer.

17. The composition of claim 1 comprising from about 0.05% to about 3.5% by weight of said organic acid.

Assignments (6)