Crosslinked vinyl acetate-maleic anhydride heteropolymers and de

Details Crosslinked vinyl acetate-maleic anhydride heteropolymers and de Crosslinked vinyl acetate-maleic anhydride heteropolymers and de

1974-12-24

1976-05-11

Kight, III, John

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

424 49, 424 78, 526219, 526272, 526230, 526227, 526231, 526232, 526324, 526330, 526326, C08F 206, C08F21808

Patent

active

039562441

ABSTRACT:
Novel crosslinked heteropolymers of vinyl acetate and maleic anhydride are provided which are useful as aqueous thickeners for aqueous formulations such as cosmetics and latex paints. Ester and amide derivatives of the combined maleic anhydride portion of the heteropolymer are also provided. The process for preparing the crosslinked heteropolymers comprises adding a maleic anhydride monomer, and crosslinking agent monomer, and catalyst in controlled amounts to a monomer solution of vinyl acetate.

REFERENCES:
patent: 2971939 (1961-02-01), Baer
patent: 3085986 (1963-04-01), Muskat
patent: 3165486 (1965-01-01), Johnson
patent: 3398092 (1968-08-01), Fields et al.
patent: 3415745 (1968-12-01), Isaacson et al.
patent: 3554985 (1971-01-01), Fields et al.
patent: 3557067 (1971-01-01), Burns et al.
patent: 3660339 (1972-05-01), Schuh

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