Patent ID: 8920606
Filing Date: 2014-12-30
Classification: C08F,D21H

Abstract:
1. A method for preparing a cellulose reactive functionalized polyvinylamide adduct using a continuous process comprising: continuously reacting a substantially aqueous reaction mixture of a vinylamide polymer comprising at least about 70 wt. % acrylamide monomer or methacrylamide monomer and 0 to about 30 wt. % cationic monomer selected from the group consisting of diallyldialkyl ammonium salts, (dialkylamino)alkyl(meth)acrylates acid addition or quaternary salts, 2-vinylpyridines acid addition or quaternary salts, dialkylamino alkyl(meth)acrylamides acid addition or quaternary salts, (p-vinylphenyl)-trimethylammonium chloride, 1-methacryloyl-4-methyl piperazine, and acid addition or quaternary ammonium salts thereof; and a cellulose reactive agent selected from the group consisting of glyoxal, glutaraldehyde, furan dialdehyde, 2-hydroxyadipaldehyde, succinaldehyde, dialdehyde starch, diepoxy compounds, and combinations thereof, at a temperature of about 2° C. to about 50° C. and a reaction pH set point of about 8.5 to about 12, for a reaction time of about 2 minutes to about 150 minutes, wherein: