Patent ID: 8053513

Claim:
A 2-pyrrolidone-4-carboxylic substituted polysiloxane represented by the random polymer of Formula 1 comprising: wherein: R 1 is a pyrrolidone-containing functional group as shown in Formula 2: D is oxygen or nitrogen, wherein at least 50% on a molar basis of D is oxygen; R 5 is hydrogen, (C 1 -C 22 ) alkyl or polyoxy (C 2 -C 3 ) alkylene of 2 to 200 units, wherein at least 50% on a molar basis of R 5 is hydrogen x is 1 or 2; R 6 is branched or unbranched (C 1-20 ) alkyl; R 2 independently selected from (C 1 -C 4 ) alkyl, phenyl or —OR 7 , wherein R 7 is hydrogen or (C 1-6 ) alkyl; R 3 independently selected from (C 1 -C 4 ) alkyl or phenyl; R 4 independently selected from phenyl, (C 1-36 ) alkyl, (C 1-36 ) alkenyl, and/or (C 1-20 ) alkyl-capped or uncapped polyoxy (C 2 -C 3 ) alkylene of 2 to 200 units; a is an integer from 10 to 560; b is an integer from 1 to 40, wherein the absolute ratio of a to b is about 2.5 to about 35 and wherein the average integer sum of a+b exists in the range of 11 to 600; and c is an integer from 0 to 10, wherein the absolute ratio of b to c is no less than about 4; wherein the polysiloxane of Formula 1 comprises: i) a detergent solubility of up to 50 wt %; and/or ii) an aqueous solubility of up to 50 wt %.