公开(公告)号：US20220056202A1

公开(公告)日：2022-02-24

申请号：US17421190

申请日：2020-01-10

Applicant: SHPP GLOBAL TECHNOLOGIES B.V.

Inventor： Peter VOLLENBERG ,  Kaushal GANDHI ,  Lohith KENCHAIAH ,  Gaurav MEDIRATTA

IPC: C08G63/183 ,  C08L67/02 ,  C08K3/22 ,  C08K3/30

Abstract: Thermoplastic compositions include from about 15 wt % to about 98 wt % of a polybutylene terephthalate (PBT) component, from about 2 wt % to about 10 wt % of at least one brightening agent and from 0 wt % to about 83 wt % of at least one additional component. The PBT component includes PBT derived from post-consumer or post-industrial recycled (PCR) polyethylene terephthalate (PET). In particular, the PBT may be derived from the PCR PET by first depolymerizing the PCR PET to form a high purity bis(2-hydroxyethyl) terephthalate (BHET) monomer (e.g., greater than 95% purity), and then polymerizing the high purity BHET monomer with butane diol (BDO) to form the PBT. The thermoplastic compositions have an L* color value of at least about 94.

公开(公告)号：US20210309847A1

公开(公告)日：2021-10-07

申请号：US17286597

申请日：2019-10-22

Applicant: SHPP GLOBAL TECHNOLOGIES B.V.

Inventor： Christopher Luke HEIN ,  Hao ZHOU ,  Bing ZHOU ,  Manojkumar CHELLAMUTHU ,  Peter VOLLENBERG

IPC: C08L33/12 ,  C08L83/10 ,  B29B9/10 ,  B29C45/00 ,  B29B13/02

Abstract: Thermoplastic compositions include: (a) from about 30 wt % to about 95 wt % poly(methyl methacrylate) (PMMA); and (b) from about 5 wt % to about 70 wt % of a poly(carbonate-siloxane) copolymer having a siloxane content of from about 25 wt % to about 45 wt %. Methods for making a molded article, include: (a) combining from about 30 wt % to about 95 wt % PMMA and from about 5 wt % to about 70 wt % of a poly(carbonate-siloxane) copolymer having a siloxane content of from about 25 wt % to about 45 wt % to form a blend; (b) melt processing and pelletizing the blend; and (c) injection molding the article from the melt processed and pelletized blend.