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Brian W S Kolthammer, Robert S Cardwell, Ronald P Markovich, Bharat I Chaudhary, Adam E Laubach, Jesus Nieto: Ethylene interpolymer blend compositions. The Dow Chemical Company, September 10, 2002: US06448341 (169 worldwide citation)

Film, molded articles and fibers prepared from ethylene/&agr;-olefin interpolymer compositions are disclosed. The interpolymer compositions are blends prepared by combining specified amounts of a narrow molecular weight distribution, narrow composition distribution breadth index interpolymer, and a ...


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Bharat I Chaudhary, Martin H Tusim, Russell P Barry: Olefin polymer and .alpha.-olefin/vinyl or .alpha.-olefin/vinylidene interpolymer blend foams. The Dow Chemical Company, December 12, 2000: US06160029 (55 worldwide citation)

A polymer blend foam having smooth skin and/or an open-cell content of at least 20 volume percent, a crosslinked gel content of no greater than 10 percent, a minimum cross-sectional area of at least 1000 mm.sup.2, and a density of no greater than 250 kg/m.sup.3. The blend includes (A) a substantiall ...


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Bharat I Chaudhary, Thoi H Ho, Thomas Oswald, Jennifer DellaMea: Grafted thermoplastic compositions and fabricated articles therefrom. The Dow Chemical Company, May 28, 2002: US06395791 (36 worldwide citation)

This invention describes grafted blend compositions, processes for their preparation and fabricated articles, especially foams therefrom. The blends exhibit enhanced melt strength, melt elongation greater than or equal to about 20 mm/s, increased upper service temperature, increased modulus, and inc ...


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Bharat I Chaudhary, Thoi H Ho, Seema V Karande, Che I Kao, Robert H Terbrueggen, David A Babb, Clark H Cummins, Michael J Mullins, H Craig Silvis: Crosslinking of polymers and foams thereof. The Dow Chemical Company, December 4, 2001: US06325956 (29 worldwide citation)

The invention includes a process comprising (a) forming a polymeric admixture including at least one polyolefin which has been prepared using a single site catalyst and at least a crosslinking amount of at least one poly(sulfonyl azide) crosslinking agent; (b) shaping the resulting admixture; and (c ...


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Bharat I Chaudhary, Ronald P Markovich, Adam E Laubach, Jesus Nieto: Thermoplastic compositions for durable goods applications. The Dow Chemical Company, March 26, 2002: US06362270 (28 worldwide citation)

Thermoplastic compositions have been discovered which are suitable for rotational molding. The compositions have improved processability and/or improved physical and mechanical properties. The compositions advantageously often exhibit one or more of the following: reduced low shear viscosity, reduce ...


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Ronald D Deibel, Susan E Dollinger, Bharat I Chaudhary: Alkenyl aromatic polymer foam laminates. The Dow Chemical Company, March 19, 2002: US06358599 (26 worldwide citation)

Adhere a polymer blend facer to at least one, preferably both, primary surfaces of a foam panel or board to provide a laminate with a combination of enhanced strength and resistance to bending relative to the foam panel. The polymer blend facer, prepared from a combination of an alkenyl aromatic pol ...


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Bharat I Chaudhary, Russell P Barry, Lawrence S Hood, Chung P Park: ENLARGED CELL SIZE FOAMS MADE FROM BLENDS OF ALKENYL AROMATIC POLYMERS AND ALPHA-OLEFIN/VINYL OR VINYLIDENE AROMATIC AND/OR STERICALLY HINDERED ALIPHATIC OR CYCLOALIPHATIC VINYL OR VINYLIDENE INTERPOLYMERS. The Dow Chemical Company, March 12, 2002: US06355341 (23 worldwide citation)

This invention pertains to a composition and a process for preparing a closed cell alkenyl aromatic polymer foam having enlarged cell size, comprising one or more alkenyl aromatic polymers, one or more substantially random interpolymers, one or more blowing agents having zero ozone depletion potenti ...


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Bharat I Chaudhary, Bruce A Malone: Method of enhancing open cell formation in alkenyl aromatic polymer foams. The Dow Chemical Company, John H Roberts, October 5, 1999: US05962545 (19 worldwide citation)

Disclosed is a method of enhancing open cell formation in making extruded alkenyl aromatic polymer foams of about 30 percent or more open cell content. Open cell formation is enhanced by incorporating into the foam an ethylene copolymer having a Vicat softening point of about 85.degree. C. or less. ...


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Bharat I Chaudhary, Russell P Barry, Stephanie C Cirihal: Foams having increased heat distortion temperature made from blends of alkenyl aromatic polymers and alpha-olefin/vinyl or vinylidene aromatic and/or sterically hindered aliphatic or cycloaliphatic vinyl or vinylidene interpolymers. The Dow Chemical Company, April 11, 2000: US06048909 (17 worldwide citation)

The present invention pertains to improved alkenyl aromatic polymer foams (and processes for their preparation) having increased heat distortion temperature and improved dimensional stability while maintaining good tensile/tear, creep and environmental dimensional change properties.