Patent ID: 8492504

Claim:
A composition comprising a polymer, a nucleophilic compound, and a guanidine-containing compound, wherein the polymer has a backbone comprising a repeat unit with an electrophilic linkage, wherein the guanidine-containing compound has the structure of formula (Ib) wherein n3 is selected from 0 and 1; R 2 and R 5 are independently selected from hydrogen, C 1 -C 30 hydrocarbyl, substituted and unsubstituted C 1 -C 30 alkyl, and substituted and unsubstituted heteroatom-containing C 1 -C 30 alkyl; X 1 and X 2 are independently selected from —NR 10 — and —C(R 11 )(R 12 )—, wherein R 10 , R 11 , and R 12 are independently selected from H and alkyl; and R 8a , R 8b , R 9a , and R 9b are independently selected from hydrogen and substituted and unsubstituted alkyl, aryl, aralkyl, and alkaryl, any of which may be heteroatom-containing, provided that any two of R 8a , R 8b , R 9a ,R 9b , R 10 , R 11 , and R 12 may be taken together to form a cycle.