公开(公告)号：US20230174766A1

公开(公告)日：2023-06-08

申请号：US18074840

申请日：2022-12-05

申请人： HYUNDAI MOTOR COMPANY ,  KIA CORPORATION ,  Shinsung Petrochemical Co.,Ltd

发明人： Tae Yoon Kim ,  Hong Chan Jeon ,  Mi Jung Yun ,  Hyeon Cheol Song ,  Yoo Sang Jeong ,  Woo Jin Kim

IPC分类号： C08L33/08

CPC分类号： C08L33/08

摘要： A vibration-damping material composition is provided. More particularly, a low-specific gravity vibration-damping material composition is disclosed that includes improved high temperature damping by using a glass bubble, an acrylic copolymer including a first acrylic copolymer and a second acrylic copolymer having different glass transition temperature and weight average molecular weight.