US 11,680,126 B2
Thermoplastic elastomer composition and thermoplastic elastomer manufactured by using the same
Sang Hyun Lee, Jeju-si (KR); JeeHoon Seong, Gwangmyeong-si (KR); Ho Dong Kim, Jecheon-si (KR); Jonghwan Suhr, Suwon-si (KR); Bumyong Yoon, Suwon-si (KR); Seunghyun Cho, Suwon-si (KR); Kyoung-Min Hong, Yangsan-si (KR); and Sang Hyun Lee, Yangsan-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); HAWSEUNG Material Co., Ltd., Yangsan-si (KR); and Research & Business Foundation SUNGKYUNKWAN UNIVERSITY, Suwon-si (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); Kia Corporation, Seoul (KR); HWASEUNG Material Co., Ltd., Yangsan-si (KR); and Research & Business Foundation SUNGKYUNKWAN UNIVERSITY, Suwon-si (KR)
Filed on Nov. 22, 2021, as Appl. No. 17/532,473.
Claims priority of application No. 10-2021-0027197 (KR), filed on Mar. 2, 2021.
Prior Publication US 2022/0282018 A1, Sep. 8, 2022
Int. Cl. C08F 255/02 (2006.01); C08L 23/12 (2006.01); C08J 3/00 (2006.01); C08J 3/24 (2006.01); C08K 5/00 (2006.01)
CPC C08F 255/02 (2013.01) [C08J 3/005 (2013.01); C08J 3/24 (2013.01); C08K 5/0016 (2013.01); C08L 23/12 (2013.01); C08L 2312/02 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A thermoplastic elastomer composition, comprising
about 80 parts by weight of an ethylene propylene diene monomer (EPDM) including 5-ethylidene-2-norbornene (ENB) and polyethylene,
about 31 parts by weight to about 35 parts by weight of polypropylene,
about 20 parts by weight to about 40 parts by weight of a filler, and
about 60 parts by weight to about 90 parts by weight of a plasticizer,
wherein the ethylene propylene diene monomer has a crystallinity of about 0% to about 15.8%, a crosslinking density of about 2.26×10−4 mol/ml to about 2.68×10−4 mol/ml, and a molecular weight distribution of about 3.4 to about 4.3, and
wherein the polypropylene has a crystallinity of about 52% to about 60%.