Exxonmobil Chemical Patents Inc.

Paul E Rollin, Jr

Narayanaswami R Dharmarajan

Andy Haishung Tsou

Bruce Alan Harrington

Smita Kacker

Vetkav Rajagopalan Eswaran

Madhavi Vadlamudi

Christopher E Hrbacek

Robert F Bahm

Provided herein are compositions comprising propylene-based polymers having improved stability and methods for producing the same. The composition comprises a propylene-based polymer that has a melting temperature of less than 120&#xb0; C. and a heat of fusion of less than 75 J/g and comprises propylene-derived units and 5-30 wt % of &#x3b1;-olefin-derived units. The stabilizer comprises an amine oxide.

Propylene-based polymers having improved stability and methods for producing the same

Provided are compositions comprising a propylene-based elastomer and a polyalphaolefin. The compositions may be particularly useful in elastic film compositions, and especially useful as elastic film layers in nonwoven laminates.

Compositions comprising propylene-based elastomers and polyalphaolefins

A method for forming a fiber, the method comprising charging to a reactive extruder a first polymer and a second polymer to form an initial blend, where the first polymer is a propylene-based elastomer including up to 35% by weight ethylene-derived units and a heat of fusion, as determined according to DSC procedures according to ASTM E-793, of less than 80 J/g and a melt temperature of less than 110&#xb0; C., where the second polymer is a propylene-based polymer having a melt temperature in excess of 110&#xb0; C. and a heat of fusion in excess of 80 J/g, and introducing the reactive blend to a spinneret to form a fiber or extruding the reacted blend through a plurality of die capillaries to form molten threads or filaments which are attenuated in a gas stream to form meltblown fibers.

Process for forming polymer blends

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Porter, TX, United States of America

Paul E Rollin, Jr