Method for preparation of ionically crosslinked ethylene copolym

Details Method for preparation of ionically crosslinked ethylene copolym Method for preparation of ionically crosslinked ethylene copolym

1976-03-18

1977-08-16

Hamrock, William F.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 16, 526 48, C08F 842, C08F 800

Patent

active

040427668

ABSTRACT:
A method for preparation of ionically crosslinked ethylene copolymers having excellent physical properties, which comprises melt blending a copolymer of (a) ethylene and (b) an .alpha.,.beta.-ethylenically unsaturated carboxylic acid ester selected from the group consisting of isopropyl acrylate, isopropyl methacrylate, tert-butyl acrylate and tert-butyl methacrylate with (c) a metal compound selected from the group consisting of the acetates, formates and oxides of the metals having 1 to 3 valences in Groups I, II, III, IV-A and VIII of the Periodic Table, and keeping the resulting molten blend at a temperature of 200.degree. to 320.degree. C to give in one step an ionically crosslinked ethylene copolymer which comprises the monomer unit components of the formulae: ##STR1## wherein R.sub.1 is a hydrogen atom or a methyl group, R.sub.2 is an isopropyl group or a tert-butyl group, M is a metal atom having 1 to 3 valences in Groups I, II, III, IV-A and VIII of the Periodic Table and n is an integer corresponding to the valence of the metal represented by M in a molar proportion of w : x : y : z which satisfy the relationships of the equations: ##EQU1## WHEREIN EITHER ONE OF X AND Z CAN BE ZERO.

REFERENCES:
patent: 3264272 (1966-10-01), Rees
patent: 3322734 (1967-05-01), Rees
patent: 3404134 (1968-10-01), Rees
patent: 3789035 (1974-01-01), Iwami et al.

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