Patent ID: 7045271

Claim:
A co-polymer comprising x wt % of A 1 units, based on the weight of the co-polymer, y wt % of A 2 units, based on the weight of the co-polymer, and z wt % of C units, based on the weight of the co-polymer, in which: x is about 30 wt % to about 98 wt %, y is about 1 wt % to 50 wt %; z is about 1 wt % to about 50 wt %, and x+y+z is 100%; (i) A 1 is selected from —[CH 2 —C(R 1 )R 2 ]—, —[CH 2 —CR 1 (CO 2 R 3 )]—, —[—(CH—CO—Y—CO—CH)—]—, and mixtures thereof; (ii) A 2 is —[CH 2 —C(R 1 )(CO 2 B n T)]—; and (iii) C is —[CH 2 —C(R 1 )(W—R 5 )]— each R 1 is independently hydrogen, alkyl of one to six carbon atoms, phenyl, substituted phenyl, halogen, cyano, or a mixture thereof; R 2 is hydrogen, alkyl of one to six carbon atoms, phenyl, substituted phenyl, halogen, alkoxy of one to four carbon atoms, acyl of one to five carbon atoms, acyloxy of one to five carbon atoms, allyl, or a mixture thereof; Y is —O— or —N(R 7 )—, in which R 7 is phenyl, substituted phenyl, alkyl of one to six carbon atoms, benzyl, or a mixture thereof; R 3 is hydrogen, alkyl of one to six carbon atoms, alkoxyalkyl of one to six carbon atoms, phenyl, or a mixture thereof; B is —(CH 2 —CH(R 4 )—O)—, —(CH 2 —C(R 4 )(OH))—, or a mixture thereof, in which each R 4 is independently hydrogen, alkyl of one to six carbon atoms, or a mixture thereof; n is about 5 to about 400; T is hydrogen, alkyl of one to eight carbon atoms, phenyl, or a mixture thereof; W is a carbon-silicon single bond, a phenylene group, a —(CH 2 ) n″ — group in which n″ is 2 to 6, or a mixture of these linking groups; R 5 is —Si(OR 6 ) 3 , an octa-substituted pentacyclooctasiloxane of the structure: or a mixture thereof; and each R 6 is independently phenyl, or alkyl of one to six carbon atoms.