Exxonmobil Chemical Patents Inc.

Exxonmobil Chemicals Patents, Inc.

Kuangyao Brian Peng

Sudhin Datta

Chia Yung Cheng

Derek Wade Thurman

Donna Jean Crowther

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.

Process to produce soft polypropylene-based nonwovens

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.

Extensible polypropylene-based nonwovens

This invention relates to an ethylene polymer comprising ethylene and up to 5 mole % of at least one comonomer, wherein the ethylene polymer has an Mw, of 10,000 to 50,000, an Mw/Mn of between 1.5 to 4.5, a density of at least 0.925 g/cc, an unsaturation level of less than 1 per 1000 carbons, a melting point of at least 120&#xb0; C., a Tc of greater than Z&#xb0; C., where Z=0.501&#xd7;(density in kg/m)&#x2212;367, and a Brookfield viscosity o at 140&#xb0; C. of 100,000 mPas or more.

Growing community of inventors

Houston, TX, United States of America

Kuangyao Brian Peng