Thomas S. Brima - late of Pittsburgh PA Masaki Fujii - Sewickley PA Seyhun Kim - Murrysville PA Kimberly M. McLoughlin - Gibsonia PA
Assignee:
Sunoco, Inc. - Philadephia PA
International Classification:
C08K 334
US Classification:
524450, 524447, 524448, 524449
Abstract:
Method of manufacturing inorganic polymer hybrids with improved mechanical properties and even dispersion of the inorganic material in the hybrids. Nanoscale exfoliation of inorganic materials having layered structures is induced, and said inorganic materials are combined with an emulsion comprising one or more molten polymers. The method provides nanoscale dispersion of inorganic material throughout the emulsion of one or more polymers without the use of compatibilizers.
Kimberly M. McLoughlin - Gibsonia PA, US John A. Boettger - Monroeville PA, US Gary R. Tarr - Burgettstown PA, US Theodore Gabor - Pittsburgh PA, US
Assignee:
Sunoco, Inc. (R&M) - Philadelphia PA
International Classification:
C08F008/06 C08F008/00
US Classification:
5253338, 525387
Abstract:
A process is provided for the production of a very low melt viscosity (high melt flow index) polymer resin, suitable for use in meltblown processing. According to the process of the current invention, a high melt viscosity (low melt flow index) resin is subjected to post-reactor molecular weight alteration by extrusion with a chemical prodegradant. The process produces a very low melt viscosity resin that can be used in meltblown processing without further treatment to reduce the average molecular weight of the resin. Further, the very low melt viscosity resins produced according to the process of the current invention contain very little or no residual prodegradant.
Kimberly Miller McLoughlin - Gibsonia PA, US John A. Boettger - Monroeville PA, US Gary R. Tarr - Burgettstown PA, US Theodore Gabor - Pittsburgh PA, US
Assignee:
Sunoco Inc. (R&M) - Philadelphia PA
International Classification:
C08F 8/06
US Classification:
5253338, 525387
Abstract:
A process is provided for the production of a very low melt viscosity (high melt flow index) polymer resin, suitable for use in spunbond or meltblown processing. According to the process of the current invention, a high melt viscosity (low melt flow index) resin is subjected to post-reactor molecular weight alteration by extrusion with a chemical prodegradant. The process produces a very low melt viscosity resin that can be used in spunbond or meltblown processing without further treatment to reduce the average molecular weight of the resin. Further, the very low melt viscosity resins produced according to the process of the current invention contain very little or no residual prodegradant.
Jeff S. Salek - Oakdale PA, US Kimberly M. McLoughlin - Gibsonia PA, US Dan Rosenthal - West Chester PA, US Andrew Schnitgen - Cranberry PA, US
Assignee:
Sunoco, Inc. (R&M) - Philadelphia PA
International Classification:
C08F 6/00 C08F 2/00 C08L 23/00
US Classification:
525192, 525240
Abstract:
A paintable impact copolymer composition is produced by in-reactor blending of a xylene insoluble polypropylene fraction and a xylene soluble ethylene-propylene rubber (EPR) fraction. The composition comprises from about 5 wt. % to about 50 wt. % a xylene-soluble portion and from about 50 wt. % to about 95 wt. % a xylene-insoluble portion. The ratio of the weight average molecular weight of said xylene-soluble portion to that of said xylene-insoluble portion is from about 0. 5 to about 1. 8. The intrinsic viscosity of said xylene-soluble portion is from about 0. 5 to about 7. 0 dL/g. The xylene-soluble portion comprises from about 30 to about 70 mole percent ethylene units.
Kimberly M. McLoughlin - Gibsonia PA, US Sehyun Kim - Murrysville PA, US
Assignee:
Sunoco Chemicals, Inc. - Philadelphia PA
International Classification:
B32B 5/26 D04H 1/00 D04H 1/56 D04H 3/16
US Classification:
442381, 442327, 442382, 442400, 442401, 428373
Abstract:
The present invention provides polypropylene blends for use in the production of fibers and fabrics. The polypropylene blends according to the current invention comprise from about 85 to about 95 percent by weight of a propylene homopolymer and from about 5 to about 15 percent by weight of an ethylene/propylene random copolymer having an ethylene content of about 7 percent by weight or less. The overall ethylene content of the blends according to the present invention is about 1 percent by weight or less. Polypropylene blends according to the current invention provide lower bonding temperatures and wider bonding windows without the increased smoke generation associated with high solubles homopolymers.
A polypropylene resin, useful for the production of biaxially oriented polypropylene (BOPP) film, is provided. The polymer of the present invention is a blend of high crystalline polypropylene homopolymer and a high ethylene ethylene/propylene random copolymer (RCP). The present invention also provides a method of preparing the novel resin as well as a novel BOPP film comprising the resin.
Stabilization System For Improving The Melt Viscosity Of Polypropylene During Fiber Processing
Kimberly McLoughlin - Gibsonia PA, US Edwin Townsend - Pittsburgh PA, US Victor DiNardo - Monroeville PA, US
International Classification:
C09K015/04 C09K015/32
US Classification:
252/400240
Abstract:
The present invention is a stabilizing system for improving the melt viscosity of polyolefin resin during fiber processing. The addition of a liquid phosphite melt processing stabilizer to polypropylene homopolymer powder improves processing stability during spinning. The present invention covers spraying the liquid phosphite onto the powder along with octadecyl 3,5-di-tert-butyl-4-hydroxyhydrocinnamate which is applied via mineral oil solution in a steamer.
Method For Preparing A Random Copolymer With Enhanced Ethylene Content
Aaron Seung-Joon Rhee - Hillsborough NJ, US Kimberly Miller McLoughlin - Gibsonia PA, US Rita Majewski - Pittsburgh PA, US Ruben A. Migone - Pittsburgh PA, US Sehyun Kim - Deer Park IL, US
Assignee:
Sunoco, Inc. (R&M) - Philadelphia PA
International Classification:
C08L 23/16 C08L 23/12
US Classification:
524528, 525240
Abstract:
A polypropylene resin, useful for the production of biaxially oriented polypropylene (BOPP) film, is provided. The polymer of the present invention is a blend of high crystalline polypropylene homopolymer and a high ethylene ethylene/propylene random copolymer (RCP). The present invention also provides a method of preparing the novel resin as well as a novel BOPP film comprising the resin.