Process for the preparation of ethylene-vinyl ester graft polyme

Details Process for the preparation of ethylene-vinyl ester graft polyme Process for the preparation of ethylene-vinyl ester graft polyme

1981-02-27

1982-05-11

Schofer, Joseph L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

526331, 264 9, 523335, 528496, 528458, C08L 0000

Patent

active

043292674

ABSTRACT:
A process for the preparation of dispersions of optionally cross-linked ethylene-vinyl ester graft polymers wherein an ethylene-vinyl ester copolymer is used as graft substrate and a vinyl ester of a C.sub.1 -C.sub.18 carboxylic acid and/or a C.sub.1 -C.sub.10 -alkyl ester of acrylic and/or methacrylic acid are used as a graft monomer which is polymerized, optionally together with a cross-linking agent having two or more C--C double bonds, in organic solution until at least 25% by weight of the graft monomer has been reacted, the reaction product is converted into a stable finely divided dispersion by the addition of a precipitating agent under the action of shearing forces and polymerisation is completed before, during or after the formation of the dispersion.

REFERENCES:
patent: 2703794 (1955-03-01), Roedel
patent: 3115485 (1963-12-01), Bartl et al.
patent: 3510464 (1970-05-01), Sato
patent: 3532658 (1970-10-01), Gintz
patent: 3661827 (1972-05-01), Taft
patent: 3692723 (1972-09-01), Kasagi et al.
patent: 3983096 (1976-09-01), Segalini
patent: 4200708 (1980-04-01), McClain
F. Daniels, "Outlines of Physical Chemistry", John Wiley and Sons, Inc., New York, 1948, pp. 526-527.

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