Process for the production of anhydride-group- or carboxyl-group

Details Process for the production of anhydride-group- or carboxyl-group Process for the production of anhydride-group- or carboxyl-group

1983-12-20

1985-02-26

Kight, John

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

Synthetic resins

From carbohydrate or derivative as a reactant

527314, 527315, C08G 6300, C08L 110, C08L 306, C08L 500

Patent

active

045018715

ABSTRACT:
Anhydride-group- or carboxyl-group-containing graft copolymers of vinyl esters and other suitable monomers on polysaccharide esters of (A) a polysaccharide ester of aliphatic C.sub.1 -C.sub.5 -mono-carboxylic acids as the graft substrate and (B) a grafted-on monomer mixture of (a) a vinyl ester of a C.sub.1 -C.sub.18 -monocarboxylic acid and (b) maleic acid anhydride and/or semiesters of maleic acid and/or fumaric acid with aliphatic C.sub.1 -C.sub.14 -monoalcohols, the ratio by weight of (A) to (B) being from 1:0.1 to 1:2 and the molar ratio of (a) to (b) being from 1:0.5 to 1:3, and a process for producing these graft copolymers.

REFERENCES:
patent: 3455853 (1969-07-01), Dekking
patent: 3634021 (1972-01-01), Bolinger et al.
patent: 3781232 (1973-12-01), Gaylord
patent: 4358510 (1982-11-01), Ito et al.
patent: 4417025 (1983-11-01), Toba et al.

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