Modified copolymers

Details Modified copolymers Modified copolymers

1975-05-12

1976-12-21

Knight, III, John

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

264234, 264237, 264345, 264348, C08F 814, C08F 832

Patent

active

039989941

ABSTRACT:
Modified copolymers which have viscosities which vary very markedly with changes in temperature are obtained by malaxating a statistical copolymer of ethylene and maleic anhydride containing between 0.5 and 20% by weight of units derived from maleic anhydride and having a melt index of between 0.1 and 500 dg/min, in the molten state with at least one chemical reagent containing at least two reactive groups which are amine or alcoholic --OH groups but at most primary or secondary amine group and at least one alcoholic --OH group.

REFERENCES:
patent: 2977334 (1961-03-01), Zopf et al.
patent: 3264272 (1966-08-01), Rees
patent: 3678016 (1972-07-01), Zimmerman et al.

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