Fine particulate crosslinked type N-vinylamide resin and microge

Details Fine particulate crosslinked type N-vinylamide resin and microge Fine particulate crosslinked type N-vinylamide resin and microge

1991-06-28

1994-01-18

Lipman, Bernard

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

525360, 525366, 525378, 526266, 526271, 526287, 5263031, 526306, 5263071, 5263072, 5263075, 5263077, 526909, C08F 2054

Patent

active

052800954

ABSTRACT:
A fine particulate crosslinked type N-vinylcarboxylic acid amide resin having an average particle size of 10 .mu.m or less comprising backbone chains of a homopolymer or copolymer comprising repeating units (A) or (A) and (B) of the formulae: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 each independently represent a hydrogen atom or methyl group; X represents a group --COOY, wherein Y represents a hydrogen atom, an alkali metal, a C.sub.1 -C.sub.18 alkyl group or a lower alkyl group substituted with hydroxyl group, a dialkylamino group or a quaternary ammonium group; a group --CONHZ, wherein Z represents a hydrogen atom or a lower alkyl group substituted with a dialkylamino group, a quaternary ammonium group, a sulfonic acid or an alkali metal salt thereof; a cyano group, a 2-ketopyrroridinyl group, a lower alkoxy group, a lower acyl group, a lower alkoxycarbonyl group or a lower alkyl group substituted with sulfonic acid or an alkali metal salt thereof; M represents a hydrogen atom, an alkali metal or an ammonium group, with proviso that when R.sup.3 is a methyl group, X is not a cyano group, a 2-ketopyrrolidinyl group, a lower alkoxy group, a lower acyl group, a lower alkoxycarbonyl group and a lower alkyl group substituted with sulfonic acid or an alkali metal salt thereof, p represents 0 or 1, and the molar ratio of m:n represents 30-100:70-0.

REFERENCES:
patent: 4623699 (1986-11-01), Brunnmueller
patent: 4727116 (1988-02-01), Lange et al.
patent: 4769427 (1988-09-01), Nowakowsky
patent: 4873299 (1989-10-01), Nowakowsky
patent: 4956400 (1990-09-01), Kozakiewicz
patent: 5008321 (1991-04-01), Hartmann
patent: 5037863 (1991-08-01), Kozakiewicz

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