Exxonmobil Chemical Patents Inc.

Jan Kalfus

Liang Li

Narayanaswami R Dharmarajan

Felix M Zacarias

Abdul M Jangda

Sudhin Datta

Jean-Roch H Schauder

James Norris Coffey

Rohan A Hule

Jennifer J Austin

Jurgen J Schroeyers

Patrick Brant

Peijun Jiang

John Robert Hagadorn

Xin Li

Jingwen Zhang

Mosha H Zhao

Carlos R Lopez-Barron

Xin Chen

John R Hagadorn

Disclosed is a thermoplastic polyolefin composition useful in automotive components comprising at least a polypropylene having a melting point temperature (T) of greater than 130&#xb0; C. and a melt flow rate (230&#xb0; C./2.16 kg) within the range from 10 g/10 min to 80 g/10 min; an amorphous ethylene-propylene copolymer comprising within the range from 40 wt % to 80 wt % ethylene derived units and having a melt flow rate (230&#xb0; C./2.16 kg) within the range from 0.1 g/10 min to 20 g/10 min; and a propylene-based elastomer having within the range from 5 to 25 wt % ethylene derived units and having a Tof less than 110&#xb0; C. The composition only partially breaks or there is no break at &#x2212;29&#xb0; C. (ASTM D256) with Notched Izod Force of between 10 to 40 ft-lb/inat 22&#xb0; C. (533 to 2,132 J/m), and between 1.0 to 12 ft-lb/inat &#x2212;29&#xb0; C. (53 to 636 J/m).

Thermoplastic polyolefin containing amorphous ethylene elastomer

Provided herein are elastomer blends and membranes including a blend of a propylene-based elastomer, a thermoplastic resin, a flame retardant, and an ultraviolet stabilizer.

Propylene-based elastomers for roofing compositions and methods for preparing the same

An impact copolymer comprising a polypropylene comprising at least 50 mol % propylene, and having a molecular weight distribution (Mw/Mn) greater than 10, a branching index (g') of less than 0.97, and a melt strength greater than 40 cN, and an elastomer. Also disclosed is a method of making an impact copolymer composition comprising melt-blending the components, sequentially or simultaneously a polypropylene resin comprising at least 50 mol % propylene, and having a molecular weight distribution (Mw/Mn) greater than 6, a branching index (g&#x2032;) of at least 0.97, and a melt strength greater than 10 cN determined using an extensional rheometer at 190&#xb0; C.; and within the range from 0.01 to 3 wt % of at least one organic peroxide; and an elastomer.

Propylene-based impact copolymers

Provided herein are roofing membranes that comprise a blend composition of propylene-based elastomer, thermoplastic resin, flame retardant, and ultraviolet stabilizer. In some embodiments, the blend compositions further comprise polyalphaolefin.

Roofing compositions comprising propylene-based elastomers

The present invention is related to adhesive composition, having a polymer blend comprising a first propylene-based polymer, wherein the first propylene-based polymer is a homopolymer of propylene or a copolymer of propylene and ethylene or a Cto Calpha-olefin, and a second propylene-based polymer, wherein the second propylene-based polymer is a homopolymer of propylene or a copolymer of propylene and ethylene or a Cto Calpha-olefin; wherein the second propylene-based polymer is different than the first propylene-based polymer; wherein the polymer blend has a melt viscosity, measured at 190&#xb0; C. and determined according to ASTM D-3236, of about 1,000 cP to about 5,000 cP; a propylene polymer; and wherein the adhesive composition is substantially free of a functionalized polyolefin, wherein the functionalized polyolefin is selected from at least one of a maleic anhydride-modified polypropylene and a maleic anhydride-modified polypropylene wax.

Adhesive compositions made from propylene-based polymers and crystalline C2/C3 homopolymer

Polymer blends comprising at least one olefin block copolymer such as poly(ethylene-b-ethylene/propylene-b-ethylene), and at least one propylene-based elastomer such as a propylene-ethylene random copolymer, such blends useful in elastic hygiene articles. The blends have improved permanent set compared to the propylene-based elastomer alone.

Compositions of olefin block copolymers and propylene-based elastomers

Provided herein are membranes including a blend of a propylene-based elastomer and an ethylene copolymer, a thermoplastic resin, a flame retardant, and an ultraviolet stabilizer.

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&#xb7;mol; 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&#xb7;mol, 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.

Growing community of inventors

Spring, TX, United States of America

Jan Kalfus