Exxonmobil Chemical Patents Inc.

Exxon Chemical Patents, Inc.

Exxonmobil Chemicals Patents, Inc.

Chia Yung Cheng

Sudhin Datta

Wen Li

Chon Yie Lin

Bryan Robert Chapman

Bruce R Lundmark

William Michael Ferry

Henry Wu-Hsiang Yang

Robert J Wittenbrink

David John Lohse

Sandra Denise Schregenberger

Chon-Yie Lin

Norman Yang

Manika Varma-Nair

James Norris Coffey

Derek Wade Thurman

George Byron Georgellis

Petra Eiselt

Kuangyao Brian Peng

William M Chien

Jeffrey Theodore Zudock

Galina Ourieva

Aspy Keki Mehta

Smita Kacker

Srivatsan Srinivas Iyer

Michael Brian Kelly

William Moa-Tseng Chien

Don Allen Plank

Dina Marie Colucci

Periagaram Srinivasan Ravishankar

Narayanaswami R Dharmarajan

Abdelhadi Sahnoune

Jay K Keung

Pawan Kumar Agarwal

Galen Charles Richeson

Srivatsan Watson Srinivas

Vincent Bernard Gallez

Rui Zhao

Yann Devorest

Derek W Thurman

G Allan Stahl

Galen C Richeson

Majia Amin

William M Ferry

Don A Plank

Dina M Colucci

Jeffery Zudock

Kuangyao B Peng

Disclosed herein is a nonwoven fabric comprising within the range of from 1 to 49 wt %, by weight of the fabric, of a reactor grade propylene-&#x3b1;-olefin copolymer possessing; within the range of from 5 to 35 wt %, by weight of the copolymer, of units derived from one or more of ethylene and/or Cto C&#x3b1;-olefins; a melt flow rate (230&#xb0; C./2.16 kg) within the range of from 600 to 7500 g/10 min; and a weight average molecular weight of less than 200,000; and a second polypropylene having a melting point, T, of greater than 110&#xb0; C. and a melt flow rate (230&#xb0; C./2.16 kg) within the range of from 20 to 7500 g/10 min; wherein the fabric has a Handle value of less than 60% (measuring the fabric of 35 g/mbasis weight). The fabric can be used in structures comprising one or more layers of the fabric described herein, and can include any number of other fabric layers made from other materials.

Process to produce soft polypropylene-based nonwovens

Disclosed herein is a nonwoven fabric comprising within the range of from 50 to 99 wt %, by weight of the composition, of a reactor grade propylene-&#x3b1;-olefin copolymer possessing within the range of from 5 to 35 wt %, by weight of the copolymer, of units derived from one or more of ethylene and/or Cto C&#x3b1;-olefins; a melt flow rate (230&#xb0; C./2.16 kg) within the range of from 500 to 7500 g/10 min; and a weight average molecular weight of less than 200,000; and a second polypropylene having a melting point, T, of greater than 110&#xb0; C. and a melt flow rate (230&#xb0; C./2.16 kg) within the range of from 20 to 7500 g/10 min; wherein the fabric has a CD Elongation value of greater than 50% (measuring the fabric of 35 g/mbasis weight). The fabric described herein can be used in structures comprising one or more layers of the fabric described herein, and can include any number of other fabric layers made from other materials.

Extensible polypropylene-based nonwovens

A process for preparing a blend of thermoplastic polymer and resin modifier within a single-screw extruder, wherein the resin modifier is a hydrocarbon resin.

Methods and apparatus for forming blends of polyolefin and resin modifier

The invention described relates to a polyolefin blend composition suitable for spunbond fiber or filament compositions, and to fabric compositions and composite constructions therefrom, said blend comprising a) from 60-98 wt % of at least one random propylene copolymer having a comonomer content of from 8 to 25 wt % and a crystalline melting point (Tm) as determined by differential scanning calorimetry (DSC) of from about 40&#xb0; C. to about 110&#xb0; C.; and b) from 2-40 wt % of at least one substantially isotactic polypropylene homopolymer or copolymer comprising one or more Cand/or C-Ccomonomer, having a crystalline melting point (Tm) as determined by DSC greater than or equal to 120&#xb0; C. The blends of the present invention typically have a melt flow rate (MFR) of from 100 g/10 min to about 500 g/10 min.

Spunbond fibers and fabrics from polyolefin blends

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 hydrocarbon plasticizer.

Plasticized polyolefin compositions

A non-woven fabric made from a composition prepared by combining a first propylene-based polymer blend, where the first polymer blend is prepared by combining a propylene-based elastomer with a propylene-based thermoplastic resin and where the first blend has an MFR (ASTM D-1238 2.16 kg @ 230&#xb0; C.) equal to or less than 50 dg/min, with a second propylene-based polymer blend, where the second polymer blend is prepared by combining a propylene-based elastomer with a propylene-based thermoplastic resin and where said second blend has an MFR (ASTM D-1238 2.16 kg @ 230&#xb0; C.) greater than 50 dg/min, where the propylene-based elastomers comprise from about 5% to 35% by weight units derived from ethylene or non-propylene alpha-olefin and have a heat of fusion, as determined by DSC, of less than 80 J/g, and where the propylene-based thermoplastic resins have a heat of fusion, as determined by DSC, equal to or greater than 80 J/g.

Fibers and non-wovens prepared with propylene-based elastomers

The present invention is directed generally to the use of propylene-based elastomers in articles. The propylene-based elastomers have isotactic polypropylene crystallinity, a melting point by DSC of 110&#xb0; C. or less, a heat of fusion of from 5 to 50 J/g, and comprise at least 75 wt % propylene-derived units, at least 6 wt % ethylene-derived units, and optionally diene-derived units. The present invention is also directed to processes for making articles comprising propylene-based elastomers.

Articles comprising propylene-based elastomers

Provided are fabrics, components thereof, and methods for making the same. Woven and nonwoven fabrics are composed of fibers composed of a polyolefin composition. The polyolefin composition is composed of a propylene polymer and up to about 50 wt. %, based on the weight of the fiber, of a hydrocarbon resin. Fibers prepared from polyolefin compositions exhibit favorable elongation properties. Such fibers exhibit advantageous processing and enhanced levels of softness, durability, and elasticity, even at high spinning speeds required for preparing fine fibers.

Synthetic fabrics, components thereof, and methods for making the same

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.

This invention relates to homogeneous blends of:

Homogeneous polymer blend and articles therefrom

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Seabrook, TX, United States of America

Chia Yung Cheng