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:
Mar. 05, 1991
Filed:
May. 10, 1989
Applicant:
Inventors:
Ernst Koehnlein, 6700 Ludwigshafen, DE;
Johannes Schlag, 6700 Ludwigshafen, DE;
Heinz Vogt, 6700 Ludwigshafen, DE;
Peter Bauer, 6700 Ludwigshafen, DE;
Alfred F Hauss, 6700 Ludwigshafen, DE;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; D02G / ;
U.S. Cl.
CPC ...
428379 ; 428375 ; 1741 / ;
Abstract
In an electric high voltage cable of 1-500 kV, the cable insulation is resistant to the formulation or the growth of water trees and consists of from 70 to 99 parts by weight of an ethylene polymer (I) and from 1 to 30 parts by weight of an ethylene copolymer (II) which is composed of from 80 to 92% by weight of ethylene and from 8 to 20% by weight of a C.sub.4 -C.sub.10 -.alpha.-olefin having a density of from 0.890 to 0.915 g/cm.sup.3 and a crystallite melting point of from 90.degree. to 125.degree. C.