Exxonmobil Chemical Patents Inc.

Chon Yie Lin

Chia Yung Cheng

Aspy Keki Mehta

Wen Li

Bryan Robert Chapman

Bruce R Lundmark

Michael C Chen

Sudhin Datta

Anthony Nicholas Speca

William Michael Ferry

James J McAlpin

Srivatsan Srinivas Iyer

Kelly Tormaschy

Michael Brian Kelly

Henry Wu-Hsiang Yang

David John Lohse

Mark Paul Hagemeister

Bruce Alan Harrington

Phillip Thomas Matsunaga

Kevin Bruce Stavens

Charles James Ruff

Craig Janzen Emett

Rajan K Chudgar

This invention is directed to a two-step process for the preparation of improved poly alpha olefins wherein the first step involves oligomerizing low molecular weight linear alpha olefins in the presence of a single site catalyst and the second step involves oligomerization of at least a portion of the product from the first step in the presence of an oligomerization catalyst. The dimer product from the first oligomerization is characterized by a tri-substituted vinylene olefin content of at least 25 wt %.

Process to produce improved poly alpha olefin compositions

The present invention relates to fibers and nonwovens made from plasticized polyolefin compositions comprising a polyolefin, a non-functionalized hydrocarbon plasticizer and a slip agent.

Polypropylene based fibers and nonwovens

The present invention relates to plasticized polyolefin compositions comprising a polyolefin and a non-functionalized plasticizer; wherein the non-functionalized plasticizer may comprise Cto Cparaffins (including branched and normal paraffins) having a pour point of less than &#x2212;5&#xb0; C. In one embodiment, the non-functionalized plasticizer is an isoparaffin comprising Cto Cisoparaffins. In another embodiment the non-functionalized plasticizer is a polyalphaolefin comprising Cto Cn-paraffins. The polyolefin may be a polypropylene homopolymer, copolymer, impact copolymer, or blends thereof, and may include a plastomer. Non-limiting examples of desirable article of manufacture made from compositions of the invention include films, tubes, pipes, sheets, fibers, woven and nonwoven fabrics, automotive components, furniture, sporting equipment, food storage containers, transparent and semi-transparent articles, toys, tubing and pipes, and medical devices.

Plasticized polyolefin compositions

The present invention relates to radiation resistant plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.

This invention relates to homogeneous blends of:

Homogeneous polymer blend and articles therefrom

This invention relates to a nonwoven article comprising a heterogeneous blend comprising:

Polymer blends and nonwoven articles therefrom

This invention relates to propylene homopolymer compositions obtained from metallocene catalysis wherein the polymer has a molecular weight distribution (Mw/Mn) in the range of from 4.0 to 20.0. The propylene homopolymer composition may be prepared in a multiple stage polymerization process using the same metallocene component in at least two stages. The composition may comprise isotactic homopolymer in one embodiment, and have a hexane extractables of less than 2 wt % in one embodiment. The composition is useful in making films.

Polypropylene compositions methods of making the same

This invention relates generally to crystalline propylene polymers, to methods for their production and to methods for their use in film applications. Specifically, this invention relates to crystalline propylene polymers comprising both propylene homopolymer and propylene copolymer. The compositions are prepared using metallocene catalyst systems comprising at least two metallocenes in a polymerization process that involves the sequential or parallel polymerization of propylene homopolymer and copolymer using propylene with a small amount of comonomer, preferably ethylene. The polymerization is catalyzed by a dual metallocene catalyst system. The resulting polymers have a broad, bimodal molecular weight distribution. The resulting polymers are excellent for use in the production of biaxially oriented films or non-oriented films. Films prepared with these propylene polymers have a significantly broader processability range and can be evenly stretched at lower temperature compared to films prepared from traditional propylene polymer.

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Houston, TX, United States of America

Chon Yie Lin