초록 ▼

Highly water absorbent films and fibers are prepared by photopolymerizing an alkaline metal salt of acrylic acid, at least one alkyl acrylate or methacrylate wherein the alkyl group contains 10 to 30 carbon atoms, at least one alkyl acrylate or methacrylate wherein the alkyl group contains 1 to 4 ca

Highly water absorbent films and fibers are prepared by photopolymerizing an alkaline metal salt of acrylic acid, at least one alkyl acrylate or methacrylate wherein the alkyl group contains 10 to 30 carbon atoms, at least one alkyl acrylate or methacrylate wherein the alkyl group contains 1 to 4 carbon atoms and a photoinitiator. The resulting interpolymers are particularly useful in the preparation of highly absorbent personal hygiene and care products.

대표청구항 ▼

An interpolymer prepared by photopolymerization of: (a) 50 to 90 weight percent of acrylic acid, 70 to 100% of the carboxylic groups having been neutralized with an alkali metal or ammonium base prior to polymerization. (b) 2 to 25 weight percent of a higher acrylic ester monomer of the formula [Fig

An interpolymer prepared by photopolymerization of: (a) 50 to 90 weight percent of acrylic acid, 70 to 100% of the carboxylic groups having been neutralized with an alkali metal or ammonium base prior to polymerization. (b) 2 to 25 weight percent of a higher acrylic ester monomer of the formula [Figure] wherein R′is hydrogen, methyl or ethyl and R is an alkyl group of 10 to 30 carbon atoms, (c) 5 to 30 weight percent of a lower acrylic ester monomer of the formula [Figure] wherein R″is a lower alkyl group having 1 to 8 carbon atoms, 0 to 50 percent of said lower acrylic ester being replaced by acrylic or methacrylic nitrile or amide, and (d) 0.01 to 5 weight percent of a photoinitiator.