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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 12202929 B1

PDFFull Text
Date of Patent:
Jan. 21, 2025

Filed:

Jan. 13, 2023

Curable composition and fiber reinforced composite material

Applicant:

Dic Corporation, Tokyo, JP;

Inventors:

Atsuko Kobayashi, Ichihara, JP;

Shigeki Matsui, Ichihara, JP;

Makoto Kimura, Ichihara, JP;

Assignee:

DIC Corporation, Tokyo, JP;

Attorneys:

Locke Lord LLP

James E. Armstrong, IV

Nicholas J. DiCeglie, Jr.

Primary Examiner:

David T Karst

Int. Cl.
CPC ...
C08G 18/58 (2006.01); C08G 18/12 (2006.01); C08G 18/42 (2006.01); C08G 18/75 (2006.01); C08G 59/24 (2006.01); C08G 59/28 (2006.01); C08G 59/42 (2006.01); C08J 5/04 (2006.01); C08J 5/24 (2006.01); C08L 63/00 (2006.01);
U.S. Cl.
CPC ...
C08G 18/58 (2013.01); C08G 18/12 (2013.01); C08G 18/4238 (2013.01); C08G 18/755 (2013.01); C08G 59/245 (2013.01); C08G 59/28 (2013.01); C08G 59/4223 (2013.01); C08J 5/042 (2013.01); C08J 5/243 (2021.05); C08J 5/249 (2021.05); C08L 63/00 (2013.01); C08J 2363/02 (2013.01); C08L 2203/30 (2013.01); C08L 2312/00 (2013.01);
Abstract

The present invention provides a curable composition comprising a urethane-modified epoxy resin (A) as an essential component of a main material, and an acid anhydride (B) as an essential component of a curing agent, wherein the urethane-modified epoxy resin (A) is a reaction product of a polyisocyanate compound (a1), a polyester polyol (a2), and a hydroxyl group-containing epoxy resin (a3) as essential reaction raw materials. The curable composition of the invention is advantageous in that a cured product having excellent fracture toughness and excellent tensile strength can be formed from the composition.

Find Patent Forward Citations

Kobayashi, Atsuko. (2025). Curable composition and fiber reinforced composite material (U.S. Patent No. 12202929). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12202929

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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