Preparation of maleic anhydride copolymers

Details Preparation of maleic anhydride copolymers Preparation of maleic anhydride copolymers

1982-02-19

1983-01-25

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526271, C08L 3700

Patent

active

043704549

ABSTRACT:
Maleic anhydride copolymer powders are prepared by a process wherein a solution or dispersion of maleic anhydride in an alkyl vinyl ether and/or an alkene, containing from 3 to 25 moles of the alkyl vinyl ether and/or alkene per mole of maleic anhydride, is brought into contact with a powder bed under polymerization conditions, and is polymerized in the bed while the reaction mass is circulated and the powder state is maintained, and the heat generated during polymerization is removed by evaporating excess monomer which boils lower than maleic anhydride.

REFERENCES:
patent: 2299189 (1942-10-01), Swan
patent: 2782182 (1957-02-01), Verburg
patent: 2938016 (1960-05-01), Johnson
patent: 4135043 (1979-01-01), Kast et al.
patent: 4141934 (1979-02-01), Wingler et al.
patent: 4243784 (1981-01-01), Akiman et al.
patent: 4255542 (1981-03-01), Brown et al.

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