Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1988-04-15
1994-04-05
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 61, 5253282, 5263074, C08F 1606
Patent
active
053005660
ABSTRACT:
Vinyl acetate and an N-vinyl formamide are copolymerized to yield poly(vinyl acetate)-co-poly(N-vinyl formamide) which is base hydrolyzed to poly(vinyl alcohol)-co-poly(N-vinyl formamide). Two phase hydrolysis of particles of poly(vinyl alcohol)-co-poly(N-vinyl formamide) as a slurry in methanol yields particles of poly(vinyl alcohol)-co-poly(vinylamine).
provided is a copolymer of the following general formula ##STR1## where m is 0 to 15 mole %. n is 50 to 99 mole %.
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Lai Ta-Wang
Pinschmidt, Jr. Robert K.
Air Products and Chemicals Inc.
Leach Michael
Marsh William F.
Reddick J. M.
Schofer Joseph L.
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