US 12,258,472 B2
Composition for curable resins, cured product of said composition, production method for said composition and said cured product, and semiconductor device
Yoshinori Nishitani, Tokyo (JP); Tatsuki Sato, Tokyo (JP); and Masaki Minami, Tokyo (JP)
Assigned to ENEOS Corporation, Tokyo (JP)
Appl. No. 17/606,681
Filed by ENEOS Corporation, Tokyo (JP)
PCT Filed Apr. 23, 2020, PCT No. PCT/JP2020/017580
§ 371(c)(1), (2) Date Oct. 26, 2021,
PCT Pub. No. WO2020/218457, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 2019-086689 (JP), filed on Apr. 26, 2019.
Prior Publication US 2022/0195188 A1, Jun. 23, 2022
Int. Cl. C08L 79/02 (2006.01); C08G 59/22 (2006.01); C08G 59/24 (2006.01); C08G 59/26 (2006.01); C08G 59/62 (2006.01); C08G 59/68 (2006.01); C08G 73/02 (2006.01); C08K 3/013 (2018.01); C08L 63/00 (2006.01); C08L 79/04 (2006.01); H01L 23/29 (2006.01); H01L 23/31 (2006.01)
CPC C08L 79/02 (2013.01) [C08G 59/22 (2013.01); C08G 59/24 (2013.01); C08G 59/26 (2013.01); C08G 59/621 (2013.01); C08G 59/688 (2013.01); C08G 73/0233 (2013.01); C08K 3/013 (2018.01); C08L 63/00 (2013.01); C08L 79/04 (2013.01); H01L 23/293 (2013.01); H01L 23/295 (2013.01); H01L 23/31 (2013.01); C08L 2203/20 (2013.01)] 20 Claims
 
1. A curable resin composition comprising:
(A) a multifunctional benzoxazine compound having at least two benzoxazine rings, the compound being at least one multifunctional benzoxazine compound selected from
(1) a multifunctional benzoxazine compound having a structural unit of formula (1)

OG Complex Work Unit Chemistry
wherein R represents a linear alkyl group having 1 to 12 carbon atoms, a cyclic alkyl group having 3 to 8 carbon atoms, or an aryl group having 6 to 14 carbon atoms, wherein the aryl group optionally has halogen or a linear alkyl group having 1 to 12 carbon atoms, as a substituent; and each Z represents hydrogen, a hydrocarbon group having 1 to 8 carbon atoms and/or a linking group and is optionally the same or different, at least one Z represents a linking group, and the benzoxazine rings are linked by the linking group; and
(2) a multifunctional benzoxazine compound represented by a structure of formula (2)

OG Complex Work Unit Chemistry
wherein L represents a divalent organic group having 1 to 5 aromatic rings or an alkylene group having 2 to 10 carbon atoms, and the organic group and the alkylene group optionally contain oxygen and/or sulfur;
(B) an epoxy compound containing (1) at least one epoxy compound having at least one norbornane structure and at least two epoxy groups, and (2) at least one epoxy compound selected from the group consisting of epoxy compounds having a biphenyl backbone and trisphenolmethane type epoxy compounds; and
(C) a curing agent,
wherein a composition consisting of (A), (B), and (C) has a weight-average molecular weight of 400 or more and 650 or less in terms of polystyrene.