Patent ID: 8349962

Claim:
A polymer composition comprising: i. 85 to 99.5 parts by weight of monomer units of a (meth)acrylic acid ester of non-tertiary alcohol; ii. 0.5 to 15 parts by weight of an acid functional monomer units; iii. 0 to 10 parts by weight of a non-acid functional, ethylenically unsaturated polar monomer units; iv. 0 to 5 parts vinyl monomer units, v. 0 to 5 parts of a multifunctional (meth)acrylate monomer units; and vi. 0.005 to 5.0 parts by weight of acylaziridine monomer units of the formula: wherein R 1 is H or CH 3 ; X 1 is —O— or —NH—; R 2 is a divalent alkylene, X 2 is —O— or —NH—; x is 0 or 1; each R 3 is independently —H or a C 1 -C 4 alkyl group, and y is 0, 1 or 2.