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Sjef Berndsen, Hans Peter Brack, Bernd Jansen, Jan Henk Kamps, Edward Kung, Daniel Lowery, Patrick Joseph McCloskey, Paul Michael Smigelski, Dennis Willemse: Method for Making Molded Polycarbonate Articles with Improved Color. General Electric Company, Marina Larson & Associates, Re Lexan, January 3, 2008: US20080004407-A1

A method for preparing a molded article includes the steps of (a) obtaining a polycarbonate resin and (b) molding the polycarbonate resin. The polycarbonate resin is made by a transesterification reaction using an activated diaryl carbonate such that the polycarbonate is susceptible to the formation ...


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Bernd Jansen, Jan Henk Kamps, Edward Kung, Patrick Joseph McCloskey, Paul Michael Smigelski: Polycarbonates and method of preparing same. General Electric Company, Marina Larson & Associates, Re Lexan, January 3, 2008: US20080004417-A1

Polycarbonates incorporating terminal carbonate groups derived from ester-substituted activated carbonates, for example terminal methyl salicyl carbonate (TMSC) derived from the use of BMSC as the activated carbonate in a transesterification process, have unfavorable properties with respect to color ...


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Bernd Jansen, Jan Henk Kamps, Edward Kung, Patrick Joseph McCloskey, Paul Michael Smigelski: Method of Preparing Polycarbonate. General Electric Company, Marina Larson & Associates, Re Lexan, January 3, 2008: US20080004418-A1

Polycarbonates incorporating terminal carbonate groups derived from ester-substituted activated carbonates in a transesterification process have unfavorable properties with respect to color, hydrolytic stability and thermal stability, particularly when the polycarbonate containing such end groups is ...


34
Hans Peter Brack, Bernd Jansen, Jan Henk Kamps, Edward Kung, Jan Pleun Lens, Hans Looij, Han Vermeulen: Branched Polycarbonate Resins and Processes to Prepare the Same. General Electric Company, Marina Larson & Associates, Re Lexan, January 3, 2008: US20080004426-A1

A method of increasing the branching and polydispersity of a polycarbonate includes the steps of: (a) including in the polycarbonate at least one species of an alkyl substituted monomer, and (b) treating the polycarbonate at an elevated temperature and for a sufficient time to increase the branching ...


35
Shreyas Chakravarti, Gabrie Hoogland, Vishvajit Chandrakant Juikar, Ganesh Kannan, Edward Kung, Nina P Vaze, Karin I van de Wetering: Polycarbonate-polyester blends, methods of manufacture, and methods of use. General Electric Company, Cantor Colburn, May 22, 2008: US20080119617-A1

A composition comprising a blend of: from 1 to 99 weight percent of a polycarbonate comprising from 10 to 90 mole percent of one or more arylate carbonate units of the formula wherein each Rf is independently a C1-12 hydrocarbon, halogen, or halogen-substituted C1-12 hydrocarbon, and u is 0 to 4; an ...


36
Jan Henk Kamps, Edward Kung, Jan Pleun Lens, Michael Teruki Takemori, Hendrik Theodorus van de Grampel: Glossy colored injection molded article. General Electric Company, Cantor Colburn Ge Plastics Smith, January 17, 2008: US20080011513-A1

An injection molded article comprising a polycarbonate composition. The polycarbonate composition is scratch resistant, flame retardant, has a low chlorine and bromine content and is dark colored.


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Bernardus Johannes Paulus Jansen, Christiaan Henricus Johannes Koevoets, Edward Kung, Wilhelmus Johannes Daniel Steendam: Flame retardant thermoplastic polycarbonate compositions. General Electric Company, Sabic Cycoloy, SABIC Innovative Plastics IP Legal, February 7, 2008: US20080029744-A1

Disclosed is a thermoplastic composition comprising a polycarbonate terpolymer comprising structures derived from structures (I), (II) and (III), wherein (I) is a dihydroxy compound having the structure (A): wherein n is 0 to 4 and Rf is independently a halogen atom, a C1-10 hydrocarbon group, or a ...


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Eugene Pauling Boden, Brian Lee Lawrence, Steven James Montgomery, Shreyas Chakravarti, Peter Hendrikus Vollenberg, Edward Kung, Jan Henk Kamps, Lina Prada, John Brian McDermott, Michael Teruki Takemori: Light transmissive articles and methods thereof. General Electric Company, Sabic Lexan, SABIC Innovative Plastics IP Legal, June 5, 2008: US20080130129-A1

The present invention provides methods for controlling the optical properties of a light transmissive article. The method includes identifying a target window in an Abbe diagram comprising reference polymeric materials. The method further includes selecting a first polymeric material from the refere ...


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Bernardus Johannes Jansen, Jan Henk Kamps, Edward Kung, Hans Looij, Lina Prada, Wilhelmus Johannes Steendam: Isosorbide-based polycarbonates, method of making, and articles formed therefrom. Cantor Colburn Sabic, April 23, 2009: US20090105393-A1

Disclosed herein is an isosorbide-based polycarbonate polymer comprising: an isosorbide unit, an aliphatic unit derived from a C14-44 aliphatic diacid, C14-44 aliphatic diol, or combination of these; and optionally, an additional unit different from the isosorbide and aliphatic units, wherein the is ...


40
Theodorus Lambertus Hoeks, Jan Henk Kamps, Dennis Karlik, Edward Kung, Michael Teruki Takemori: Transparent articles prepared from thermoplastic compositions having low birefringence. Sabic Innovative Plastics Ip, March 24, 2011: US20110071261-A1

An optical grade article comprises a thermoplastic composition comprising a poly(aliphatic ester)-polycarbonate copolymer comprising 10 to 25 wt % of a soft block ester unit derived from a C20-44 aliphatic dicarboxylic acid or derivative thereof, 34 to 77 wt % of a carbonate unit derived from 2-hydr ...