Exxonmobil Chemical Patents Inc.

Celanese International Corporation

Yi Ping Ni

Sudhin Datta

Liang Li

Rohan A Hule

Xin Chen

Ying Sun

Jie Hui Xu

Bin Zhao

Pei Te Bao

Peite Bao

Toshiaki Yamaguchi

Eric Paul Jourdain

Saifudin M Abubakar

Willy J J Leysen

Li Liang

Shanshan Zhang

Yi Shi

Weiqian Zhang

Li Yuan

Yinjie Zhang

Thomas Cugnon

Wanli Wang

Xiaoyun Wang

Michael W Bednarik

Tie Y Ye

Yijin Zhang

Qingyun Qian

Ying Ying Sun

Zhen Yu Gong

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.

Low density foamed thermoplastic vulcanizate compositions

A process of heat shrinking an article is provided. The process includes shaping a thermoplastic vulcanizate (TPV) into an article, the TPV having: a partially vulcanized rubber dispersed in a continuous thermoplastic phase, wherein more than 5 wt % of the rubber is extractable in boiling xylene, and wherein the thermoplastic phase comprises a thermoplastic resin having a Tm&#x3e;110&#xb0; C. and a propylene-based elastomer (PBE) having a Tm&#x3c;110&#xb0; C.; and heating the article to a temperature between about 100&#xb0; C. and 250&#xb0; C. to shrink the article.

Shrinkable thermoplastic vulcanizate and method and article

The present invention is related to a composition with about 80 wt % to about 95 wt % of a polymer blend, wherein the polymer blend comprises (a) about 3 wt % to about 25 wt % of a first propylene-based elastomer based on the polymer blend, and (b) about 75 wt % to about 97 wt % of a second propylene-based elastomer based on the polymer blend; and about 5 wt % to about 20 wt % of an ethylene-based polymer; wherein the first propylene-based elastomer and the second propylene-based elastomer each comprise the following: propylene and from about 2 to about 25 wt % units derived from one or more Cor C-Calpha-olefins; triad tacticity greater than about 90% and a heat of fusion less than about 75 J; and wherein the first propylene-based elastomer is different from the second propylene-based elastomer.

Propylene-based polymer compositions with improved crystallization

Bimodal polypropylene compositions and a process to form melt blended bimodal polypropylene compositions comprising combining at least two polypropylenes in at least a two-pass process, and forming a bimodal polypropylene composition having a Flexural Modulus (190&#xb0; C., 1% secant) of at least 1700 MPa, as well as one or more other selected properties. These compositions are suitable for thermoformed articles and injection molded articles, any of which may be foamed.

Bimodal polypropylenes and method of making same

The present invention relates to a polymer composition comprising a thermoplastic polyester and a propylene-based elastomer, wherein the propylene-based elastomer comprises propylene-derived units and 5 to 30 wt % of &#x3b1;-olefin-derived units, and has a melting temperature of less than 120&#xb0; C. and a heat of fusion of less than 75 J/g.

Polyester compositions, and process for making articles therefrom

The present invention is related to a propylene-based injection molded composition made from a polymer blend comprising from 45 to 85 wt % of a polymer blend modifier having a weight average molecular weight of 10,000 to 100,000 g/mole and from 15 to 55 wt % of a propylene-based elastomer having a weight average molecular weight of from 100,000 to 300,000 g/mole, where the weight percent of the polymer blend modifier and the propylene-based elastomer are based on the total weight of the polymer blend. The polymer blend modifier comprises a first propylene-based polymer and a second propylene-based polymer, where the first and second propylene-based polymers are different and are individually selected from a homopolymer of propylene or a copolymer of propylene and ethylene or a Cto Calpha-olefin.

Propylene-based polymer compositions for injection molding

The present invention relates to a bimodal polypropylene composition comprising a blend of a HMW polypropylene component and a LMW polypropylene component, where the high molecular weight (HMW) component of the bimodal composition has a z-average molecular weight Mz of more than 400,000 g/mole, and a process to make such composition. The composition is suitable for thermoformed articles and injection molded articles.

Bimodal polypropylene compositions and method of making same

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Shanghai, China

Yi Ping Ni