公开(公告)号：US20210309854A1

公开(公告)日：2021-10-07

申请号：US17265348

申请日：2018-08-03

申请人： Avient Corporation ,  GLS Thermoplastic Alloys (Suzhou) Co., Ltd.

发明人： Jiren GU ,  Hanxing WEI

IPC分类号： C08L75/08 ,  C08L75/06 ,  B32B27/08 ,  B32B27/28 ,  B32B27/36 ,  B32B27/40 ,  B29C45/00 ,  B29C45/14 ,  B29B11/06

摘要： Thermoplastic elastomer compounds include (a) at least about 40 weight percent of thermoplastic polyurethane selected from polycaprolactone-type thermoplastic polyurethane, polyether-type thermoplastic polyurethane, and combinations thereof, and (b) at most about 5 weight percent of polysiloxane. The thermoplastic elastomer compounds can be molded into thermoplastic articles which exhibit substantially no blooming after weathering, while also exhibiting good processability, useful functionality, and desirable aesthetics. The thermoplastic compounds can be especially useful for making overmolded thermoplastic articles.

公开(公告)号：US11518881B2

公开(公告)日：2022-12-06

申请号：US16763170

申请日：2017-11-13

申请人： PolyOne Corporation ,  GLS Thermoplastic Alloys (Suzhou) Co., Ltd.

发明人： Jiren Gu ,  Hanxing Wei

IPC分类号： C08L75/00 ,  B32B27/28 ,  B29C70/68 ,  C08G77/16 ,  C08G77/445 ,  C08L25/08 ,  C08L75/04 ,  C08L83/06 ,  C08L83/10

摘要： An overmolded thermoplastic article includes a substrate portion molded from a thermoplastic resin compound and an overmold portion molded from a thermoplastic elastomer compound. The thermoplastic resin compound includes thermoplastic polymer resin. The thermoplastic elastomer compound includes thermoplastic elastomer and polysiloxane as a mold release agent, and is free of wax. The overmold portion is bonded onto the substrate portion with a peel strength at least comparable to that of an overmolded thermoplastic elastomer compound containing wax as a mold release agent instead of the polysiloxane. Undesirable effects observed with the use of wax as a mold release agent in overmolded thermoplastic elastomer compounds such as blooming and ease of scratching/marring can be reduced, while desirable properties such as silky feel of the surface of the overmold portion and good bonding of the overmold portion onto the substrate portion can be at least maintained.