Patent ID: 7125469

Claim:
A temporary wet strength resin comprising a polymer backbone comprising a co-crosslinking monomeric unit comprising an electrophilic moiety, a homo-crosslinking monomeric unit comprising a hydroxyl moiety and lacking electrophilic moieties and nucleophilic moieties that form stable, covalent bonds with electrophilic moieties, and a cationic monomeric unit wherein the temporary wet strength resin has the following formula: and X is —O—, —NH—, or —NCH 3 —, and R 1 is a substituted or unsubstituted aliphatic group, R 2 is an unsubstituted aliphatic group or a substituted aliphatic group lacking electrophilic moieties and nucleophilic moieties that form stable, covalent bonds with electrophilic moieties; Y 1 , Y 2 , and Y 3 are independently —H, —CH 3 , or a halogen; W is a non-nucleophilic moiety, water-soluble nitrogen heterocyclic moiety or a tertiary amide, and Q is a cationic monomeric unit, wherein the mole percent of a is from about 1% to about 47%, the mole percent of b is from about 0% to about 70%, the mole percent of c is from about 10% to about 90%, and the mole percent of d is from about 1% to about 40%; and said temporary wet strength resin has a weight average molecular weight of at least about 20,000.