Exxonmobil Chemical Patents Inc.

Guy Joseph Wouters

Jean-Roch H Schauder

Sudhin Datta

Periagaram Srinivasan Ravishankar

Jo Ann M Canich

Gabor Kiss

Rainer Kolb

David John Lohse

Maria Dolores Ellul

Eric Paul Jourdain

Robert Patrick Reynolds, Jr

Florin Barsan

Kent Leon Chasey

Giandomenico Stella

Branched ethylene-propylene-diene elastomers (bEPDM) and processes for making the bEPDM's comprising combining a catalyst precursor and an activator at a temperature within a range from 90&#xb0; C. to 160&#xb0; C. with ethylene, a C3 to C12 &#x3b1;-olefin, a non-conjugated diene, and a dual-polymerizable diene, where the catalyst precursor is a metallocene catalyst precursor, preferably according to one of various structures including any two ligands selected from cyclopentadienyl ligands and ligands isolobal to the cyclopentadienyl group.

Process for making branched EPDM and the EPDM therefrom

Non cross-linked modifiers for thermoplastic alloys comprising from 20 to 80% by weight based on the modifier of an interpolymer of ethylene and an alpha-olefin having from 4 to 12 carbon atoms grafted with an acid functionality, preferably maleic anhydride, having a Melt Index of from 0.3 to 100 and a density of 0.85 to 0.91 prior to being grafted and from 80 to 20% by weight of an ungrafted diene containing interpolymer derived from ethylene and an alpha-olefin having from 3 to 12 carbon atoms and an amount of a cross-linking component effective to provide cross-linking during subsequent melt blending with a condensation polymer having a melting point of at least 150&#xb0; C.

Modifiers for thermoplastic alloys and alloys produced using such modifiers

Disclosed herein is a multimodal polymer composition comprising 45 to 75 wt % of a first polymer fraction, 25 to 55 wt % of a second polymer fraction, and from 10-50 phr of an extender oil. The multimodal polymer composition has an overall Mooney viscosity of less than 90 ML(1+4@125&#xb0; C.), and each polymer fraction comprises an ethylene, C-Calpha-olefin, non-conjugated diene polymer, wherein the first polymer fraction has a Mooney viscosity of greater than or equal to about 150 ML(1+4@125&#xb0; C.), the second polymer fraction has a Mooney viscosity from about 20 to about 120 ML(1+4@125&#xb0; C.). A process for making the multimodal polymer composition comprising a process utilizing two or more reactors in series is also disclosed.

Multimodal ethylene-alpha-olefin elastomers and process for making

The invention relates to thermoplastic compositions in which (A) an isotactic polypropylene, optionally containing comonomer, with a melting point of at least 110&#xb0; C. and (B) a polyamide, (A) and (B) constituting at least 70 wt %, are blended with (C) at least 2 wt % of a grafted functionalized propylene-based elastomer having isotactic crystallinity and containing at least 0.25 wt % of MAH-derived units based on the total weight of (C). Optionally (D) an ungrafted polyolefin may be added with a melting point of less than 100&#xb0; C., (C) and (D) combined being at least 8 wt % and the wt % of (A), (B), (C) and (D) being calculated on the basis of the total polymer weight of the thermoplastic composition.

Compositions of polypropylene and polyamide

This invention relates generally to synthetic polymers, generally with improved balance of processability, resilience and durability. These polymers are generally of the ethylene, alpha-olefin, diene terpolymer type.

Multimodal ethylene, alpha-olefin and diene polymers, processes for making and devices comprising such compositions

Disclosed are blends of a propylene-based polymer, an elastomer, and optionally an ethylene-based polymer, having improved low temperature toughness. The elastomer is preferably a copolymer of ethylene, one or more C -C &agr;-olefin comonomers, and optionally one or more non-conjugated diene comonomers, having a MLRA/ML ratio of at least 8 and an ethylene content of from 74 to 95 mole percent.

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Brussels, Belgium

Guy Joseph Wouters