Liquid absorption agent

Details Liquid absorption agent Liquid absorption agent

1993-03-11

1994-04-05

Zitomer, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526240, 526264, 526287, 5263031, 526306, 5263071, 5263072, 526312, 5263171, 526318, 5263181, 526342, 526347, 526333, C08F23602, C08F23602, C08F22602

Patent

active

053006062

ABSTRACT:
A liquid absorption agent for water or organic solvents comprising, as a main component, a crosslinked N-vinylcarboxylic acid amide resin comprising the backbone chain of a homopolymer or copolymer comprising repeating units of the formula shown below crosslinked with a crosslinking agent: ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 independently represent a hydrogen atom or methyl;
X represents a group --COOY, wherein Y represents a hydrogen atom, an alkali metal, C.sub.1 -C.sub.6 alkyl, or lower alkyl substituted with hydroxyl, dialkylamino or quaternary ammonium group; a group --CONHZ, wherein Z represents a hydrogen atom or lower alkyl substituted with a dialkylamino group, quaternary ammonium group, sulfonic acid or an alkali metal salt thereof; cyano, 2-ketopyrrolidinyl, lower alkoxy, lower acyl, lower acyloxy or lower alkyl substituted with sulfonic acid or an alkali metal salt thereof, with a proviso that when R.sup.3 is methyl, X is not cyano, 2-ketopyrrolidinyl, lower alkoxy, lower alkylcarbonyl, lower alkoxycarbonyl and lower alkyl substituted with sulfonic acid or a salt thereof;
M represents a hydrogen atom or an alkali metal;
p represents 0 or 1; and
a molar ratio of m:n is 50-100:50-0.

REFERENCES:
patent: 4500437 (1985-02-01), Engelhardt
patent: 4522997 (1985-06-01), Schmitz
patent: 4585845 (1986-04-01), Engelhardt et al.
patent: 4640609 (1987-02-01), Yamamoto et al.
patent: 4722958 (1988-02-01), Sauer et al.
patent: 4873299 (1989-10-01), Nowakowsky
patent: 5126395 (1992-06-01), End

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