Water-resistant color inkjet receptive films

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United States of America Patent

PATENT NO 6620521
SERIAL NO

09663010

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Abstract

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What is described herein is a process for preparing a lightly-crosslinked copolymer of (a) vinyl pyrrolidone (VP) and (b) dimethylaminopropyl methacrylamide (DMAPMA) under more reproducible conditions. Suitably the weight ratio of (a):(b) is 50-95:50-5, preferably 80:20. The copolymer has a Brookfield viscosity of 5,000 to 45,000 cps; preferably 10,000 to 30,000 cps, and a haze of <100 NTU; it includes about 0.1 to 0.5 wt. %, preferably 0.2 to 0.4 wt. %, of a cross-linking agent based upon the total weight of the monomers in the copolymer.

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Patent Owner(s)

Patent OwnerAddress
ISP CAPITAL INCSUITE 303 300 DELAWARE AVENUE WILMINGTON DE 19801

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kopolow, Stephen L Plainsboro, NJ 40 461
Kwak, Yoon Tae Woodcliff Lake, NJ 10 102

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