Patent ID: 7892525

Claim:
An antiperspirant composition comprising: a) a cationically hydrophobically modified polymer; b) water; and c) an acidic antiperspirant agent wherein said cationically modified polymer comprises repeating units polymerized from a monomer mixture containing: i) at least one amino-substituted vinyl monomer or salt thereof; ii) at least one hydrophobic nonionic vinyl monomer; iii) at least one associative vinyl monomer; iv) at least one semihydrophobic vinyl surfactant monomer; v) optionally, at least one hydroxy-substituted nonionic vinyl; vi) optionally, a least one crosslinking monomer; and mixtures thereof; wherein said at least one associative vinyl monomer (iii) is selected from at least one monomer represented by formula (III): wherein, each R 2 is independently H, methyl, —C(O)OH, or —C(O)OR 3 ; R 3 is C 1 -C 30 alkyl; A is —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—, or —CH 2 CH 2 NHC(O)—; Ar is a divalent aryl; E is H or 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 is 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 , C 4 H 8 , or a mixture thereof, and n is an integer in the range of about 5 to about 250; Y is —R 4 O—, —R 4 NH—, —C(O)—, —C(O)NH—, —R 4 NHC(O)NH—, or —C(O)NHC(O)—; and R 5 is a substituted or unsubstituted alkyl selected from the group consisting of a C 8 -C 40 linear alkyl, a C 8 -C 40 branched alkyl, a C 8 -C 40 carbocyclic alkyl, a C 2 -C 40 alkyl-substituted phenyl, an aryl-substituted C 2 -C 40 alkyl, and a C 8 -C 80 complex ester; wherein the R 5 alkyl group optionally comprises one or more substituents selected from the group consisting of a hydroxyl group, an alkoxyl group, and a halogen group; and wherein said at least one semihydrophobic vinyl surfactant monomer (iv) 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 H, C 1 -C 30 alkyl, —C(O)OH, or —C(O)OR 7 ; R 7 is C 1 -C 30 alkyl; A is —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—, or —CH 2 CH 2 NHC(O)—; Ar is a divalent aryl; E is H or 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 is 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 H or C 1 -C 4 alkyl; and D is a C 8 -C 30 unsaturated alkyl, or a carboxy-substituted C 8 -C 30 unsaturated alkyl.