US 12,291,629 B2
Method of manufacturing a molded article
Yutaka Obata, Ichihara (JP); Yasunari Okada, Ichihara (JP); and Tomoaki Takebe, Ichihara (JP)
Assigned to IDEMITSU KOSAN CO., LTD., Tokyo (JP)
Appl. No. 17/763,140
Filed by IDEMITSU KOSAN CO., LTD., Tokyo (JP)
PCT Filed Sep. 24, 2020, PCT No. PCT/JP2020/036049
§ 371(c)(1), (2) Date Mar. 23, 2022,
PCT Pub. No. WO2021/060381, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 2019-177415 (JP), filed on Sep. 27, 2019.
Prior Publication US 2022/0363881 A1, Nov. 17, 2022
Int. Cl. B29C 45/00 (2006.01); B29C 45/27 (2006.01); B29C 45/53 (2006.01); B29C 45/73 (2006.01); C08L 23/22 (2006.01); C08L 33/10 (2006.01); B29K 23/00 (2006.01); B29K 33/04 (2006.01)
CPC C08L 23/22 (2013.01) [B29C 45/0001 (2013.01); B29C 45/2708 (2013.01); B29C 45/53 (2013.01); B29C 45/73 (2013.01); C08L 33/10 (2013.01); B29K 2023/18 (2013.01); B29K 2033/04 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method of manufacturing a molded article, comprising: supplying a thermosetting composition into a plunger;
filling the supplied thermosetting composition into a depressurized molding part of a mold by the plunger; and
thermosetting the filled thermosetting composition in the molding part, wherein the thermosetting composition comprises the following component (A) and component (B), and
has a viscosity of 0.1 Pa·s or higher and 100 Pa·s or lower at a shear rate of 10 s−1 at 25° C. measured in accordance with JIS K7117-2,
(A) polybutadiene having a structural unit represented by the following formula (1A) and a structural unit represented by the following formula (1B), wherein the terminal group comprises a methacryloyl group or an acryloyl group;
(B) a thermal polymerization initiator;

OG Complex Work Unit Chemistry