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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 11884812 B1

PDFFull Text
Date of Patent:
Jan. 30, 2024

Filed:

Jun. 28, 2019

Hydrogenated block copolymer

Applicant:

Kuraray Co., Ltd., Kurashiki, JP;

Inventors:

Naoto Takahashi, Kamisu, JP;

Yusuke Nojima, Tainai, JP;

Assignee:

KURARAY CO., LTD., Kurashiki, JP;

Attorney:

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

Primary Examiner:

Hui H Chin

Int. Cl.
CPC ...
C08L 53/02 (2006.01); B32B 27/08 (2006.01); C08F 8/04 (2006.01); C08F 112/08 (2006.01); C08F 136/06 (2006.01); C08F 136/08 (2006.01); C08L 23/12 (2006.01); C08L 23/14 (2006.01); C08L 23/06 (2006.01);
U.S. Cl.
CPC ...
C08L 53/025 (2013.01); B32B 27/08 (2013.01); C08F 8/04 (2013.01); C08F 112/08 (2013.01); C08F 136/06 (2013.01); C08F 136/08 (2013.01); C08L 23/06 (2013.01); C08L 23/12 (2013.01); C08L 23/14 (2013.01); B32B 2250/02 (2013.01); B32B 2250/03 (2013.01); B32B 2250/24 (2013.01); B32B 2307/31 (2013.01); B32B 2307/732 (2013.01); B32B 2439/46 (2013.01); B32B 2439/80 (2013.01); C08L 2203/02 (2013.01); C08L 2203/162 (2013.01);
Abstract

A hydrogenated block copolymer containing polymer blocks (A1) and (A2) each mainly containing an aromatic vinyl compound-derived structural unit and polymer blocks (B) and (C) each mainly containing a conjugated diene compound-derived structural unit, at least one of the polymer blocks (B) and (C) being present between the polymer blocks (A1) and (A2), the hydrogenated block copolymer having a total content of the polymer blocks (A1) and (A2) of 5 to 30% by mass, a 3,4-bond and 1,2-bond content in the polymer block (B) of 1 to 40% by mole, a 3,4-bond and 1,2-bond content in the polymer block (C) of 50 to 100% by mole, and a mass ratio [(C)/{(B)±(C)} of the polymer block (C) to the sum of the polymer blocks (B) and (C) of 26/100 to 63/100.

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