Exxonmobil Chemical Patents Inc.

Univation Technologies, LLC

Tonen Chemical Corporation

Toray Tonen Specialty Separator Godo Kaisha

Toray Battery Separator Film Co., Ltd.

Zerong Lin

Patrick Brant

Koichi Kono

Hiroyuki Ozaki

Jeffrey Lawrence Brinen

Robert Olds Hagerty

Randall B Laird

Kohtaro Kimishima

Kevin Bruce Stavens

Pradeep P Shirodkar

Larry Lee Iaccino

Gary David Mohr

Agapios Kyriacos Agapiou

Michael E Muhle

David Michael Glowczwski

Michael A Risch

Stanley J Katzen

Keith Wesley Trapp

Edward F Smith

Michael E Sieloff

Ted A Powell

Robert J Wittenbrink

Anthony Nicholas Speca

Chia Shian Chee

Guo-Xin Jin

James C Vartuli

David Charles Calabro

Fathi David Hussein

F David Hussein

James Austin Kendrick

Scott Thomas Roger

Stanley Wai-Yan Chow

Dao Zhang

Sudhin Datta

Donna Jean Crowther

Maria Dolores Ellul

Robert Tan Li

David H McConville

Arnold Lustiger

Mosha H Zhao

Thomas T Sun

Eugene Ronald Uhl

Kotaro Kimishima

Keith W Trapp

Jeanne Marie MacDonald

Jeffery Lawrence Brinen

Chang-Kun Liu

David F Hussein

James Clarke Vartuli

Processes for producing impact copolymers are provided. Ethylene and at least one copolymer can be polymerized in the presence of one or more catalysts, polypropylene particles, and one or more halocarbon compounds to produce an impact copolymer that includes the polypropylene particles and an ethylene copolymer.

Polymerization activators for supported Ziegler-Natta catalysts

A thermoplastic vulcanizate comprising a dynamically cured rubber, where the rubber is peroxide cured, and a thermoplastic phase, where at least 10% by weight of the thermoplastic phase includes an ultrahigh molecular weight plastic, where the ultrahigh molecular weight plastic is characterized by a Mthat is greater than 0.8&#xd7;10g/mole.

Peroxide-cured thermoplastic vulcanizates prepared with ultrahigh molecular weight plastics

The invention relates to a multi-layer, microporous membrane having appropriate permeability, pin puncture strength, shutdown temperature, shutdown speed, meltdown temperature, and thickness uniformity. The invention also relates to a battery separator formed by such multi-layer, microporous membrane, and a battery comprising such a separator. Another aspect of the invention relates to a method for making the multi-layer, microporous polyolefin membrane, a method for making a battery using such a membrane as a separator, and a method for using such a battery.

Multi-layer, microporous membrane, battery separator and battery

A method of treating a gas phase fluidized bed reactor and a method of polymerizing olefins in a gas phase fluidized bed reactor in the presence of a catalyst prone to cause sheeting by introducing a chromium-containing compound into the reactor and forming a high molecular weight polymer coating on the walls of the reactor. Furthermore, a device for and method of introducing the chromium-containing compound into the fluidized bed reactor at a plurality of locations in proximity to a lower section of a bed section wall of the fluidized bed reactor, and forming a high molecular weight polymer coating on the bed section wall.

Methods and devices for polymerization

A method for treating at least one interior surface (for example, a bed wall) of a fluidized bed polymerization reactor system, including by applying a solution catalyst (preferably at least substantially uniformly and in liquid form) to each surface, and optionally (where a catalyst component of the solution catalyst comprises at least one chromium containing compound) oxidizing at least some of the applied chromium containing compound in a controlled manner.

Methods for applying solution catalysts to reactor surfaces

The invention relates to a multi-layer, microporous polyolefin membrane having appropriate permeability, pin puncture strength, shutdown temperature, shutdown speed, meltdown temperature, and thickness uniformity. The invention also relates to a battery separator formed by such multi-layer, microporous membrane, and a battery comprising such a separator. Another aspect of the invention relates to a method for making the multi-layer, microporous polyolefin membrane, a method for making a battery using such a membrane as a separator, and a method for using such a battery.

Disclosed herein is a polymer composition, its manufacture and use, said composition may comprise greater than about 90 mole % propylene monomer, and having a unique combination of properties, including one or more of the following: a heat of fusion of more than about 108 J/g, a melting point of 165&#xb0; C. or higher, a Melt Flow Rate so low that it is essentially not measurable and a molecular weight of greater than about 1.5&#xd7;10. Further disclosed herein are blends or mixtures of the present novel polymer composition and products, such as, for example, microporous film structures and the like comprising same.

Polymeric material and its manufacture and use

Disclosed herein is multi-layer, microporous polyolefin membrane comprising a first porous layer comprising primarily a polyethylene, and a second porous layer comprising a polyethylene resin and polypropylene, the polypropylene having a weight-average molecular weight of 6&#xd7;10or more and a heat of fusion (measured by a differential scanning calorimeter) of 90 J/g or more, a fraction of the polypropylene having a molecular weight of 5&#xd7;10or less being 5% or less by mass.

Microporous membrane, battery separator and battery

Disclosed are polyethylene ('PE') compositions, articles comprising PE compositions, and methods of making blended PE compositions, wherein the blended composition comprises from about 80 to about 95 weight % of a first PE and from about 5 to about 20 weight % of a second PE. The first PE has a density greater than or equal to about 0.945 g/cc and a MWD greater than about 5. The second PE has a density less than about 0.945 g/cc, a melt index less than about 0.70 g/10 minutes and less than or equal to the melt index of the first PE, a MWD ranging from about 1 to about 5, a weight average molecular weight less than about 400,000, and a CDBI greater than about 50%. The PE composition has an ESCR greater than the ESCR of the first PE.

Enhanced ESCR of HDPE resins

Disclosed herein is a multi-layer, microporous polyolefin membrane comprising a first porous layer of a polyethylene, and a second porous layer comprising a polyethylene, and polypropylene having a weight-average molecular weight of 6&#xd7;10or more and a fraction having a molecular weight of 1.8&#xd7;10or more being 10% or more by mass.

This invention is directed to processes of making polymer in the presence of a hydrofluorocarbon or perfluorocarbon and recovering the polymer. The processes provided enable polymerization processes to be practiced with minimal fouling in the reaction system, and to the recovery of the hydrofluorocarbon and other hydrocarbons such as hydrocarbons for reuse in the process or hydrocarbon by-products from the polymerization process. The invention is particularly beneficial in the production of ethylene based polymers using Ziegler Natta catalyst systems.

Polymerization process

A microporous polyolefin membrane comprising a polyethylene resin, and polypropylene having a weight-average molecular weight of 6&#xd7;10or more and a heat of fusion of 90 J/g or more (measured by a differential scanning calorimeter), a fraction having a molecular weight of 1.8&#xd7;10or more being 10% or more by mass of the polypropylene.

Microporous polyolefin membrane, its production method, and battery separator

Growing community of inventors

Kingwood, TX, United States of America

Zerong Lin