The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 1977
Filed:
Mar. 18, 1976
Sumitomo Chemical Company, Limited, Osaka, JA;
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.