Dow Global Technolgoies LLC

Dow Global Technology Inc.

Benjamin C Poon

Yunwa Wilson Cheung

Phillip Dene Hustad

Edmund M Carnahan

Roger L Kuhlman

Colin Li Pi Shan

Kim Louis Walton

Gary Robert Marchand

James C Stevens

David D Devore

Rajen M Patel

Hongyu Chen

Timothy Todd Wenzel

Daniel J Arriola

Andy Cheng Chang

Jeffrey D Weinhold

Gordon R Roof

Eddy I Garcia-Meitin

Pankaj Gupta

Hong Peng

David D Graf

Patricia L Roberts

Pamela J Stirn

Shih-Yaw Lai

Antonios K Doufas

Colin LiPiShan

Ashish Sen

Yuen-Yuen D Chiu

Lonnie G Hazlitt

Angela N Taha

Didem Oner-Deliormanli

Brian A Jazdzewski

Seema V Karande

XiaoHua Qiu

Xiahua Qui

Xiao Hua Qiu

Guido Bramante

Eddy Garcia-Meitin

Selim Bensason

Yeun-Yuen D Chiu

A composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining:

Catalyst composition comprising shuttling agent for ethylene multi-block copolymer formation

Embodiments of the invention provide block composites comprising a soft copolymer, a hard polymer and a block copolymer having a soft segment and a hard segment, wherein the hard segment of the block copolymer is the same composition as the hard polymer in the block composite and the soft segment of the block copolymer is the same composition as the soft copolymer of the block composite and their use as impact modifiers.

Block composites and impact modified compositions

Embodiments of the invention provide a class of mesophase separated butene/&#x3b1;-olefin block interpolymers with controlled block sequences. The butene/&#x3b1;-olefin interpolymers are characterized by an average block index, ABI, which is greater than zero and up to about 1.0 and a molecular weight distribution, M/M, greater than about 1.4. Preferably, the block index is from about 0.2 to about 1. In addition or alternatively, the block butene/&#x3b1;-olefin interpolymer is characterized by having at least one fraction obtained by Temperature Rising Elution Fractionation ('TREF'), wherein the fraction has a block index greater than about 0.3 and up to about 1.0 and the butene/&#x3b1;-olefin interpolymer has a molecular weight distribution, M/M, greater than about 1.4.

Butene/&#x3b1;-olefin block interpolymers

Embodiments of the invention provide a class of butene/&#x3b1;-olefin block interpolymers. The butene/&#x3b1;-olefin inter-polymers are characterized by an average block index, ABI, which is greater than zero and up to about 1.0 and a molecular weight distribution, M/M, greater than about 1.3. Preferably, the block index is from about 0.2 to about 1. In addition or alternatively, the block butene/&#x3b1;-olefin interpolymer is characterized by having at least one fraction obtained by Temperature Rising Elution Fractionation ('TREF'), wherein the fraction has a block index greater than about 0.3 and up to about 1.0 and the butene/&#x3b1;-olefin interpolymer has a molecular weight distribution, M/M, greater than about 1.4.

Embodiments of the invention provide a class of propylene/&#x3b1;-olefin block interpolymers. The propylene/&#x3b1;-olefin interpolymers are characterized by an average block index, ABI, which is greater than zero and up to about 1.0 and a molecular weight distribution, M/M, greater than about 1.3. Preferably, the block index is from about 0.2 to about 1. In addition or alternatively, the block propylene/&#x3b1;-olefin interpolymer is characterized by having at least one fraction obtained by Temperature Rising Elution Fractionation ('TREF'), wherein the fraction has a block index greater than about 0.3 and up to about 1.0 and the propylene/&#x3b1;-olefin interpolymer has a molecular weight distribution, M/M, greater than about 1.3.

Propylene/&#x3b1;-olefins block interpolymers

Embodiments of the invention provide a class of mesophase separated ethylene/&#x3b1;-olefin block interpolymers with controlled block sequences. The ethylene/&#x3b1;-olefin interpolymers are characterized by an average block index, ABI, which is greater than zero and up to about 1.0 and a molecular weight distribution, M/M, greater than about 1.4. Preferably, the block index is from about 0.2 to about 1. In addition or alternatively, the block ethylene/&#x3b1;-olefin interpolymer is characterized by having at least one fraction obtained by Temperature Rising Elution Fractionation ('TREF'), wherein the fraction has a block index greater than about 0.3 and up to about 1.0 and the ethylene/&#x3b1;-olefin interpolymer has a molecular weight distribution, M/M, greater than about 1.4.

Ethylene/&#x3b1;-olefin block interpolymers

Embodiments of the invention provide a class of mesophase separated propylene/&#x3b1;-olefin block interpolymers with controlled block sequences. The propylene/&#x3b1;-olefin interpolymers are characterized by an average block index, ABI, which is greater than zero and up to about 1.0 and a molecular weight distribution, M/M, greater than about 1.4. Preferably, the block index is from about 0.2 to about 1. In addition or alternatively, the block propylene/&#x3b1;-olefin interpolymer is characterized by having at least one fraction obtained by Temperature Rising Elution Fractionation ('TREF'), wherein the fraction has a block index greater than about 0.3 and up to about 1.0 and the propylene/&#x3b1;-olefin interpolymer has a molecular weight distribution, M/M, greater than about 1.4.

Propylene/alpha-olefin block interpolymers

A fiber is obtainable from or comprises an ethylene/&#x3b1;-olefin interpolymer characterized by an elastic recovery, Re, in percent at 300 percent strain and 1 cycle and a density, d, in grams/cubic centimeter, wherein the elastic recovery and the density satisfy the following relationship: Re&#x3e;1481&#x2212;1629(d). Such interpolymer can also be characterized by other properties. The fibers made therefrom have a relatively high elastic recovery and a relatively low coefficient of friction. The fibers can be cross-linked, if desired. Woven or non-woven fabrics can be made from such fibers.

Fibers made from copolymers of ethylene/&#x3b1;-olefins

Embodiments of the invention provide a class of ethylene/&#x3b1;-olefin block interpolymers. The ethylene/&#x3b1;-olefin interpolymers are characterized by an average block index, ABI, which is greater than zero and up to about 1.0 and a molecular weight distribution, M/M, greater than about 1.3. Preferably, the block index is from about 0.2 to about 1. In addition or alternatively, the block ethylene/&#x3b1;-olefin interpolymer is characterized by having at least one fraction obtained by Temperature Rising Elution Fractionation ('TREF'), wherein the fraction has a block index greater than about 0.3 and up to about 1.0 and the ethylene/&#x3b1;-olefin interpolymer has a molecular weight distribution, M/M, greater than about 1.4.

Ethylene/&#x3b1;-olefin block copolymers

A fiber is obtainable from or comprises an ethylene/&#x3b1;-olefin interpolymer characterized by an elastic recovery, Re, in percent at 300 percent strain and () cycle and a density, d, in grams/cubic centimeter, wherein the elastic recovery and the density satisfy the following relationship: Re&#x3e;1481&#x2212;1629(). Such interpolymer can also be characterized by other properties. The fibers made therefrom have a relatively high elastic recovery and a relatively low coefficient of friction. The fibers can be cross-linked, if desired. Woven or non-woven fabrics can be made from such fibers.

Disclosed herein are polymer blends comprising at least one ethylene/&#x3b1;-olefin interpolymer and two different polyolefins which can be homopolymers. The ethylene/&#x3b1;-olefin interpolymers are block copolymers comprising at least a hard block and at least a soft block. In some embodiments, the ethylene/&#x3b1;-olefin interpolymer can function as a compatibilizer between the two polyolefins which may not be otherwise compatible. Methods of making the polymer blends and molded articles made from the polymer blends are also described.

Polymer blends from interpolymer of ethylene/&#x3b1; olefin with improved compatibility

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Pearland, TX, United States of America

Benjamin C Poon