Patent ID: 7378479

Claim:
A polymer that is the product of polymerization of a monomer mixture comprising: a) least one amino-substituted vinyl monomer; b) at least one hydrophobic nonionic vinyl monomer; c) least one associative vinyl monomer; and d) at least one semihydrophobic vinyl surfactant monomer; wherein said at least one associative vinyl monomer (c) is selected from at least one monomer represented by formula (III): wherein, each R 2 is independently selected from hydrogen, methyl, —C(O)OH, and —C(O)OR 3 ; R 3 is selected from C 1 -C 30 alkyl; A is selected from —CH 2 C(O)O—, —C(O)O—, —O—, —CH 2 O—, —NHC(O)NH—, —C(O)NH—, —Ar—(CE 2 ) z —NHC(O)O—, —Ar—(CE 2 ) z —NHC(O)NH—, and —CH 2 CH 2 NHC(O)—; Ar is a divalent aryl; E is selected from hydrogen and methyl; z is 0 or 1 ; k is an integer in the range of 0 to about 30, and m is 0 or 1, with the proviso that when k is 0, m is 0, and when k is in the range of 1 to about 30, m is 1; (R 4 —O) n is a polyoxyalkylene, which can be a homopolymer, a random copolymer, or a block copolymer of C 2 -C 4 oxyalkylene units, wherein R 4 is —C 2 H 4 —, —C 3 H 6 —, or —C 4 H 8 —, or a mixture thereof, and n is an integer in the range of about 5 to about 250; Y is selected from —R 4 O—, —R 4 NH—, —C(O)—, —C(O)NH—, —R 4 NHC(O)NH—, and —C(O)NHC(O)—; and R 5 is a substituted or unsubstituted alkyl selected from C 8 -C 40 linear alkyl, C 8 -C 40 branched alkyl, C 8 -C 40 carbocyclic alkyl, a C 2 -C 40 alkyl-substituted phenyl, an aryl-substituted C 2 -C 40 alkyl, and C 8 -C 80 complex ester; wherein the R 5 alkyl group optionally having one or more substituents selected from a hydroxyl group, an alkoxyl group, and a halogen group; and wherein said at least one semihydrophobic vinyl surfactant monomer (d) is selected from at least one monomer represented by formulas (IV) or (V) and combinations thereof: wherein, in each of formulas (IV) and (V), each R 6 is independently selected from hydrogen, C 1 -C 30 alkyl, —C(O)OH, and —C(O)OR 7 ; R 7 is selected C 1 -C 30 alkyl; A is selected from —CH 2 C(O)O—, —C(O)O—, —O—, —CH 2 O—, —NCH(O)NH—, —C(O)NH—, —Ar—(CE 2 ) z —NHC(O)O—, —Ar—(CE 2 ) z —NHC(O)NH—, and —CH 2 CH 2 NHC(O)—; Ar is a divalent aryl; E is selected from hydrogen and methyl; z is 0 or 1; p is an integer in the range of 0 to about 30, and r is 0 or 1, with the proviso that when p is 0, r is 0, and when p is in the range of 1 to about 30, r is 1; (R 8 —O) v is a polyoxyalkylene, which can be a homopolymer, a random copolymer or a block copolymer of C 2 -C 4 oxyalkylene units, wherein R 8 is —C 2 H 4 —, —C 3 H 6 —, —C 4 H 8 —, or a mixture thereof, and v is an integer in the range of about 5 to about 250; R 9 is selected from hydrogen and C 1 -C 4 alkyl; and D is selected from C 8 -C 30 unsaturated alkyl, and carboxy-substituted C 8 -C 30 unsaturated alkyl.