Stock material or miscellaneous articles – Composite – Of addition polymer from unsaturated monomers
Patent
1998-01-22
2000-05-30
Schwartz, Pamela R.
Stock material or miscellaneous articles
Composite
Of addition polymer from unsaturated monomers
428195, 4284744, 428500, 347105, B41M 500
Patent
active
060689374
ABSTRACT:
A recording sheet has a base and a receptive layer disposed on at least one surface of the base. The receptive layer contains at least a water-absorbent copolymer and said water-resistant graft copolymer whose main chain is polyvinyl alcohol. The water-absorbent copolymer absorbs inks, and the water-resistant graft copolymer makes the receptive layer resistant to discoloration, blurring, and gloss or luster irregularities. The water-absorbent graft copolymer comprises a graft copolymer produced by grafting a vinyl monomer having a carboxyl group and a monomer having a functional group reacting with the carboxyl group. The water-absorbent copolymer comprises a copolymer of acrylic acid and vinyl alcohol. The water-resistant graft copolymer and the water-absorbent copolymer are added at a ratio in parts by weight ranging from 20/80 to 80/20, preferably, from 30/70 to 70/30.
REFERENCES:
patent: 4547495 (1985-10-01), Bedell et al.
patent: 4887097 (1989-12-01), Akiya et al.
Abe Tetsuya
Nozawa Takashi
Tanaka Naoki
Yamaguchi Shuichi
Schwartz Pamela R.
Seiko Epson Corporation
Sony Chemicals Corporation
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