Water soluble graft copolymers of lignin, methods of making the

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From lignin – tannin – or derivative reactant

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523130, 523131, 252 8551, 252 8554, C08G 5900, C09K 700

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active

049315277

ABSTRACT:
A water-soluble graft copolymer of lignin-(2-propenamide)-(4n,4n-dimethyl-4-ammoniumhept-1,6-diene chloride) having a central lignin network and at least one grafted side chain, R, having randomly repeating units of the formulas: ##STR1## such that the central lignin network has a molecular weight of about 1,000 to 150,000 and the total number of randomly repeating units in the grafted side chain or chains is in the range of 5 to 300,000 such that the total copolymer molecular weight is in the range of 1,000 to 30,000,000.

REFERENCES:
patent: 3388061 (1968-06-01), Markham
patent: 3985659 (1976-10-01), Felicetta et al.
patent: 4322301 (1982-03-01), Balckmore
patent: 4342645 (1982-08-01), Fletcher et al.
patent: 4687828 (1987-08-01), Meister et al.

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