US 12,460,037 B2
Preparing method of superelastomer, superelastomer prepared using the same, and molded article containing superelastomer
Jihoon Shin, Daejeon (KR); Sae Hume Park, Daejeon (KR); and Jeong Suk Yuk, Daejeon (KR)
Assigned to KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, Daejeon (KR)
Filed by KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, Daejeon (KR)
Filed on Feb. 4, 2022, as Appl. No. 17/665,137.
Claims priority of application No. 10-2021-0016621 (KR), filed on Feb. 5, 2021.
Prior Publication US 2022/0259362 A1, Aug. 18, 2022
Int. Cl. C08G 63/08 (2006.01); C08F 290/14 (2006.01); C08G 63/85 (2006.01); C08G 63/91 (2006.01)
CPC C08F 290/141 (2013.01) [C08G 63/08 (2013.01); C08G 63/85 (2013.01); C08G 63/912 (2013.01)] 11 Claims
 
1. A preparation method of a superelastomer comprising:
(a) preparing an initiator represented by the following Chemical Formula 1; and
(b) preparing a graft copolymer represented by the following Chemical Formula 2 by ring-opening polymerization of the initiator of step (a) and decalactone:

OG Complex Work Unit Chemistry
wherein, x is an integer of 1660 to 1680, and y is an integer of 30 to 60,

OG Complex Work Unit Chemistry
wherein, x is an integer of 1660 to 1680, y is an integer of 30 to 60, and n is an integer of 11 to 42.