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. 09, 1983
Filed:
Feb. 24, 1981
Riichiro Nagano, Waki, JP;
Mitsui Petrochemical Industries, Ltd., Tokyo, JP;
Abstract
In a laminated multilayer structure composed of (A) a layer of a graft-modified ethylene resin grafted with an unsaturated carboxylic acid or a functional derivative thereof and (B) an oxygen- or nitrogen-containing polar resin layer or a metal layer in contact with the layer (A); the improvement wherein (1) the layer (A) consists of (i) 1 to 100% by weight of said graft-modified ethylene resin derived from an ethylene polymer which contains 0 to 15 mole % of at least one alpha-olefin having 3 to 30 carbon atoms as a comonomer and has an MI.sub.2 /[.eta.].sup.-8.77 ratio in absolute value of not less than 15 and a density of 0.88 to 0.98 g/cm.sup.3, and (ii) 99 to 0% by weight of an unmodified ethylene polymer containing 0 to 50 mole % of at least one alpha-olefin having 3 to 30 carbon atoms as a comonomer and having an MI.sub.2 /[.eta.].sup.-8.77 ratio in absolute value of not less than 15 and a density of 0.86 to 0.96 g/cm.sup.3, and (2) the layer (A) has (a) an ethylene content of not less than 80 mole %, (b) a content of the carboxylic acid or the derivative thereof of 0.01 to 10% by weight based on the weight of the layer (A), (c) a density of 0.88 to 0.98 g/cm.sup.3, and (d) an MI.sub.10 /MI.sub.2 ratio of from 5 to 18.