Water soluble graft copolymers of lignin methods of making the s

Details Water soluble graft copolymers of lignin methods of making the s Water soluble graft copolymers of lignin methods of making the s

1990-05-04

1991-02-05

Stoll, Robert L.

Compositions

Leather or fur treating

252 8551, 166270, 166274, E21B 4322, C09K 300

Patent

active

049902709

ABSTRACT:
A water-soluble graft copolymer of lignin-(2-propenamide)-(2-methyl-N7,N7-dimethyl-7-ammonium-3-oxo-4-oxyoct- 1-e ne chloride or methylsulfate) having a central lignin network and at least one grafted side chain, R, having randomly repeating units of the formula: ##STR1## such that the central lignin network has a molecular weight of about 1,000 to 150,000 and the total number of randomly repreating units in the grafted side chain or chains is in the range of 50 to 300,000 such that the total copolymer molecular weight is in the range of 15,000 to 30,000,000.

REFERENCES:
patent: 3671428 (1972-06-01), Kim
patent: 3897827 (1975-08-01), Felber et al.
patent: 4703801 (1987-11-01), Fry et al.
patent: 4888120 (1989-12-01), Mueller et al.

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