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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 10947337 B1

PDFFull Text
Date of Patent:
Mar. 16, 2021

Filed:

Oct. 09, 2018

Toughened epoxy resin composition

Applicant:

Kaneka Corporation, Osaka, JP;

Inventor:

Nobuo Miyatake, Hyogo, JP;

Assignee:

KANEKA CORPORATION, Osaka, JP;

Attorney:

Osha Bergman Watanabe & Burton LLP

Primary Examiner:

Megan McCulley

Int. Cl.
CPC ...
C08G 59/22 (2006.01); C08L 71/02 (2006.01); C08L 51/00 (2006.01); C08L 63/00 (2006.01); C08G 59/42 (2006.01); C08G 59/18 (2006.01); C08G 59/32 (2006.01); C08G 59/50 (2006.01); C08G 65/04 (2006.01); C08L 25/08 (2006.01); C08L 33/10 (2006.01); C08L 101/06 (2006.01);
U.S. Cl.
CPC ...
C08G 59/22 (2013.01); C08G 59/18 (2013.01); C08G 59/188 (2013.01); C08G 59/3227 (2013.01); C08G 59/4253 (2013.01); C08G 59/502 (2013.01); C08G 59/5026 (2013.01); C08G 65/04 (2013.01); C08L 25/08 (2013.01); C08L 33/10 (2013.01); C08L 51/00 (2013.01); C08L 63/00 (2013.01); C08L 71/02 (2013.01); C08L 101/06 (2013.01); C08G 2650/04 (2013.01); C08G 2650/58 (2013.01); C08L 2207/53 (2013.01);
Abstract

A toughened epoxy resin composition includes an end-capped polyalkylene oxide (A), an epoxy resin (B), an epoxy curing agent (C), and a core shell polymer (D). The end-capped polyalkylene oxide (A) has a number average molecular weight of 1500 to 5000, and 40% or more of a total number of ends of the end-capped polyalkylene oxide (A) are capped with at least one selected from the group consisting of an alkyl group, an allyl group, and an aryl group. A weight ratio of the end-capped polyalkylene oxide (A) to the core shell polymer (D) is 10/90 to 90/10. The core shell polymer (D) comprises a core layer in an amount of 70 to 95% by weight and the core layer is one or more selected from the group consisting of diene rubber, (meth)acrylate rubber, organosiloxane rubber, styrene polymer, and (meth)acrylate polymer.

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