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:
Jun. 23, 2020
Filed:
Dec. 11, 2015
Showa Denko K.k., Tokyo, JP;
Hiromi Otake, Tokyo, JP;
Aoi Nakano, Tokyo, JP;
Chika Yamashita, Tokyo, JP;
Yoshitaka Ishibashi, Tokyo, JP;
Hiroshi Uchida, Tokyo, JP;
SHOWA DENKO K.K., Tokyo, JP;
Abstract
A thermosetting resin composition includes a polyalkenyl phenol resin (A) and an aromatic polymaleimide compound (B). Polyalkenyl phenol resin (A) has at least one aromatic ring unit (a1) which may have a 2-alkenyl group bonded thereto and in which a phenolic hydroxyl group is alkyl-etherified, and at least one aromatic ring unit (a2) which has a phenolic hydroxyl group and which may have a 2-alkenyl group bonded thereto. At least one of aromatic ring units (a1, a2) has a 2-alkenyl group. Each aromatic ring unit is bonded by a linking group. When m represents the number of aromatic ring units (a1), and n represents the number of aromatic ring units (a2), n to (m+n) is 10-60%. The polyalkenyl phenol resin (A) is included in an amount at which the amount of 2-alkenyl groups becomes 0.4-1.5 mol per mol of maleimide groups in the aromatic polymaleimide compound (B).