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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.:

US 11990253 B1

PDFFull Text
Date of Patent:
May. 21, 2024

Filed:

Mar. 30, 2020

Insulating resin composition and production method therefor, insulating tape and production method therefor, insulating layer formation method, and power cable and production method therefor

Applicant:

Furukawa Electric Co., Ltd., Tokyo, JP;

Inventors:

Tetsuya Mieda, Tokyo, JP;

Takahiro Kanaya, Tokyo, JP;

Assignee:

FURUKAWA ELECTRIC CO., LTD., Tokyo, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

William H Mayo, III

Int. Cl.
CPC ...
H01B 9/04 (2006.01); B29C 48/00 (2019.01); B29C 48/08 (2019.01); B29C 48/88 (2019.01); B32B 15/08 (2006.01); B32B 27/08 (2006.01); B32B 27/20 (2006.01); B32B 27/32 (2006.01); C08J 5/18 (2006.01); C08L 23/04 (2006.01); H01B 3/44 (2006.01); H01B 13/14 (2006.01); B29L 7/00 (2006.01);
U.S. Cl.
CPC ...
H01B 3/441 (2013.01); B29C 48/0022 (2019.02); B29C 48/022 (2019.02); B29C 48/08 (2019.02); B29C 48/9135 (2019.02); B32B 15/08 (2013.01); B32B 27/08 (2013.01); B32B 27/20 (2013.01); B32B 27/32 (2013.01); C08J 5/18 (2013.01); C08L 23/04 (2013.01); H01B 9/04 (2013.01); H01B 13/14 (2013.01); B29K 2023/06 (2013.01); B29K 2995/0007 (2013.01); B29L 2007/007 (2013.01); B32B 2264/108 (2013.01); B32B 2307/206 (2013.01); B32B 2307/732 (2013.01); B32B 2457/00 (2013.01); C08J 2323/04 (2013.01); C08J 2423/26 (2013.01); C08L 2203/202 (2013.01); C08L 2205/02 (2013.01);
Abstract

An insulating resin composition includes at least a base resin, and an antioxidant. The base resin includes a polyolefin resin modified with a polar group-containing molecule and an unmodified polyolefin resin. The polar group-containing molecule is at least one selected from an unsaturated dicarboxylic acid, an unsaturated dicarboxylic acid anhydride, and an unsaturated dicarboxylic acid anhydride derivative. The base resin has a sea-island structure including a first phase having the unmodified polyolefin resin and a second phase provided in the first phase and having the modified polyolefin resin. The second phase has an average diameter of 2 μm or less.

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