公开(公告)号：US11780981B2

公开(公告)日：2023-10-10

申请号：US16682224

申请日：2019-11-13

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Liang Li ,  Yadong He ,  Chunling Xin ,  Xue Bai

IPC: C08J9/18 ,  C08J9/228

CPC classification number: C08J9/18 ,  C08J9/228 ,  C08J2203/06 ,  C08J2203/22 ,  C08J2205/044 ,  C08J2205/052 ,  C08J2323/14

Abstract: The present disclosure relates to foam beads of an elastomeric composition comprising a propylene-based elastomer. The foam bead has a density of less than 0.5 g/cm3. The foam beads can be made from pellets of elastomeric compositions by expanding with supercritical fluid blowing agent. The foamed bead has reduced lightness while maintaining elasticity.

公开(公告)号：US20200377709A1

公开(公告)日：2020-12-03

申请号：US16770386

申请日：2018-11-02

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Liang Li ,  Toshiaki Yamaguchi ,  Weiqian Zhang ,  Peite Bao ,  Yi Ping Ni ,  Eric Paul Jourdain

IPC: C08L23/16 ,  C08J9/228

Abstract: The present disclosure relates to TPV compositions suitable for foaming, as well as foamed TPV compositions, methods of making the foregoing, and applications of various foamed TPV compositions, including in glass run channels. The TPV compositions comprise an at least partially vulcanized rubber component dispersed within a thermoplastic component comprising a first thermoplastic resin. According to some aspects, the TPV composition may be combined with a high melt-strength thermoplastic resin, and in particular a high melt-strength polypropylene-based thermoplastic resin, to make a foamable TPV composition. The foamable TPV composition (with or without high melt-strength thermoplastic resin) is then coextruded or otherwise combined with foaming agent (preferably comprising thermo-expandable microspheres) to form the foamed composition. Foamed compositions according to various aspects are suitable for use in glass run channels for automobiles, and in particular in the base and/or sidewall portions of such glass run channels.

公开(公告)号：US20170166736A1

公开(公告)日：2017-06-15

申请号：US15214658

申请日：2016-07-20

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Jan Kalfus ,  Liang Li ,  Narayanaswami Dharmarajan ,  Felix M. Zacarias

IPC: C08L23/12 ,  E04D5/06 ,  C08J5/00

CPC classification number: C08L23/12 ,  C08J5/18 ,  C08J2323/12 ,  C08J2423/12 ,  C08L2314/02 ,  C08L2314/06 ,  E04D5/06 ,  C08L23/16

Abstract: A polymer blend comprising 10 to 90 parts by weight of a propylene-based polymer component having a weight average molecular weight of at least 200 kg·mol−1; and 20 to 80 parts by weight of a propylene-based elastomer component comprising structural units derived from propylene and at least one of ethylene and C4-C12 alpha-olefins having a weight average molecular weight in the range from 5 to 50 kg·mol−1, method for making a membrane comprising the same and roofing membrane comprising the same. The polymer blend is particularly suitable for making roofing membrane due to advantageous elastic modulus in broad temperature ranges.