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Yalvac Selim, Karjala Teresa, Cheung Yunwa W, Moncla Brad, Walther Brian W: Polymer compositions comprising a low viscosity, homogeneously branched ethylene/&agr;-olefin extender. Dow Global Technologies, Yalvac Selim, Karjala Teresa, Cheung Yunwa W, Moncla Brad, Walther Brian W, sSPENCER Lee, April 15, 2004: WO/2004/031292 (28 worldwide citation)

A thermoplastic composition is described that comprises (i) from 1 to 99 percent by weight of the total composition of at least one thermoplastic copolymer, for example, styrene block copolymers, and (ii) from 1 to 99 percent by weight of the total composition of at least one homogeneously branched ...


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Kuhlman Roger L, Wenzel Thimothy T, Cheung Yunwa W, Hustad Phillip D, Carnahan Edmund M, Briggs John R, Jazdzewski Brian A, Liang Wenbin, Mori Roji, Kizu Kouichi, Kawahara Nobuo, Matuso Shingo, Kojoh Shinichi, Kashiwa Norio: Functionalized elastomer compositions. Dow Global Technologies, Mitsui Chemicals, Kuhlman Roger L, Wenzel Thimothy T, Cheung Yunwa W, Hustad Phillip D, Carnahan Edmund M, Briggs John R, Jazdzewski Brian A, Liang Wenbin, Mori Roji, Kizu Kouichi, Kawahara Nobuo, Matuso Shingo, Kojoh Shinichi, Kashiwa Norio, HOPPE James T, August 11, 2005: WO/2005/073283 (8 worldwide citation)

The present invention relates to olefinic compositions comprising a functionalized branched olefin copolymer containing functionalized sidechains derived from olefin and at least one chain end nucleophilic heteroatom containing functional group with at least one protic hydrogen, optionally with one ...


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Tau Li Min, Cheung Yunwa W, Diehl Charles F, Hazlitt Lonnie G: Thermoplastic elastomer compositions. Dow Global Technologies, Tau Li Min, Cheung Yunwa W, Diehl Charles F, Hazlitt Lonnie G, WAKEFIELD Charles P, May 21, 2004: WO/2004/041928 (5 worldwide citation)

A unique thermoplastic olefin composition having: (a) at least 40 percent by weight of a propylene-alpha olefin copolymer based on the total weight of polymers in the composition, the propylene-alpha olefin copolymer having at least 60 percent by weight units derived from propylene, at least 6 perce ...


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Park Chung P, Broos Rene, Thoen Johan, Guest Martin J, Cheung Yunwa W, Gathers John J, Chaudhary Bharat I, Hood Lawrence S: Blends of -g(a)-olefin/vinylidene aromatic monomer or hindered aliphatic vinylidene monomer interpolymers with polyolefins. Dow Chemical, June 23, 1999: EP0923617-A1 (3 worldwide citation)

Thermoplastic blends are prepared from polymeric materials comprising (A) from 1 to 99 weight percent of at least one interpolymer made from monomer components comprising (1) from 1 to 65 mole percent of (a) at least one aromatic vinylidene monomer, or (b) at least one hindered aliphatic or cycloali ...


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Poon Benjamin C, Chen Hongyu, Cheung Yunwa W: Polymer blends from interpolymer of ethylene/alpha olefin with improved compatibility. Dow Global Technologies, Poon Benjamin C, Chen Hongyu, Cheung Yunwa W, ADAMSON Jennifer D, March 13, 2008: WO/2008/030953 (3 worldwide citation)

Disclosed herein are polymer blends comprising at least one ethylene/α-olefin interpolymer and two different polyolefins which can be homopolymers. The ethylene/α- olefin interpolymers are block copolymers comprising at least a hard block and at least a soft block. In some embodiments, the ethylene/ ...


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Cheung Yunwa W, Diehl Charles F, Hazlitt Lonnie G: Thermoplastic elastomer compositions. Dow Global Technologies, April 11, 2007: EP1772487-A1 (2 worldwide citation)

A unique thermoplastic olefin composition having: (a) at least 40 percent by weight of a propylene-alpha olefin copolymer based on the total weight of polymers in the composition, the propylene-alpha olefin copolymer having at least 60 percent by weight units derived from propylene, at least 6 perce ...


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Cheung Yunwa W, Walther Brian W, Cogen Jeffrey M: Filled thermoplastic olefin composition. Dow Global Technologies, Cheung Yunwa W, Walther Brian W, Cogen Jeffrey M, PLOTECHER Gary R, November 18, 2004: WO/2004/099309 (2 worldwide citation)

A filled thermoplastic olefin composition comprising (a) a first polypropylene having (i) substantially isotactic propylene sequences, (ii) a narrow molecular weight distribution, and (iii) a broad composition distribution, and (b) at least about 20 percent by volume filler based on the total volume ...


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Chaudhary Bharat I, Cheung Yunwa W, Cuntala Randall M, Esseghir Mohamed, Klier John: Free-radical-initiated crosslinking of polymers. Dow Global Technologies, Chaudhary Bharat I, Cheung Yunwa W, Cuntala Randall M, Esseghir Mohamed, Klier John, HANSBRO Kevin R, July 14, 2005: WO/2005/063896 (1 worldwide citation)

The present invention is a free-radical carbon-FRTS-carbon crosslinkable polymeric composition. The resulting carbon-FRTS-carbon crosslinked polymer is prepared from at least one polymer which upon forming free radicals preferentially degrades or carbon-carbon crosslinks. The present invention permi ...


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Chang Dane, Cheung Yunwa W, Diehl Charles, Vihtelic Joseph M: Fugitive pattern for casting. Howmet Res, Dow Global Technologies, October 1, 2004: FR2852871-A1

A fugitive pattern for making a shell mold for investment casting a metal or alloy comprises a substantially random interpolymer and a low molecular weight polymer in proportions to provide a fugitive pattern having a combination of properties suitable for use in making the shell molds.