General Electric Company

James P Barren

Deborah Ann Haitko

Roy Ray Odle

Thomas Link Guggenheim

Joseph A King, Jr

Sunita Singh Baghel

Brent A Dellacoletta

Ronald A Greenberg

David G Hawron

Arthur Joseph Osborn

James Edward Pickett

John Frederick Graf

Sandra F Feldman

Andrew Joseph Poslinski

Daniel Joseph Brunelle

Hua Wang

Vicki Herzl Watkins

Kena Kimi Yokoyama

Alexander Isaakovich Shakhnovich

Luc Carlos Govaerts

Jianing Huang

Craig Alan Cantello

Harsha Mysore Hatti

Fuh-Sheng Fred Chen

James Louis Cifarelli

Peter Catsman

Eric R George

Fred Fuh-Sheng Chen

Ron Van Der Wal

Sunita Singh

Grigoriy Aleksandrovich Shmigol

A spatially-resolved spectrometer is used to measure streaking in molded sample plastic parts produced using a molding tool with various mold inserts which produce certain desired topological surface features upon these sample plastic parts. The measurements from one or more of these sample plastic parts are then provided to a computerized device which appropriately filters the data and calculates overall data shape, average peak and valley shift, and a quality number indicative of data slopes. These calculations are then used to determine an optimum set of ingredients and processing conditions to be used for the full-scale plastic part production.

System and method to quantify appearance defects in molded plastic parts

Predicting material color shifts due to weathering. A color formulation tool determines the concentration of colorants from a color standard. The color formulation tool obtains weathered optical parameters for the color standard from a color database and predicts the color of the color standard from the colorant concentrations and weathered optical parameters.

Predicting material color shifts due to weathering

Using the molding tool ( ), spatially-resolved spectrometer ( ) and computerized device ( ) of U.S. patent application Ser. No. 09/303,409, streaking problems identified in production are first diagnosed ( ), then duplicated on a laboratory scale ( ) and compared with the streaking problems observed in production. Next, options are developed and tested for fixing (correcting) the observed problem and testing these on a laboratory scale ( ). Finally, the option(s) chosen for correcting the observed problem are validated prior to reinitiating full-scale production ( ).

Method and apparatus for resin formulations with improved streaking performance

Thermoplastic resin compositions containing an aromatic polycarbonate resin and a surface modified titanium dioxide having a first coating and no further coatings are disclosed. The compositions may include a rubber modified graft copolymer comprising a discontinuous rubber phase dispersed in a continuous rigid thermoplastic phase, wherein at least a portion of the rigid thermoplastic phase is chemically grafted to the rubber phase; a rigid copolymer; a fluoropolymer; and/or a flame retarding amount of an organophosphorus flame retardant. Preferred titanium dioxide include first coating materials of polyols or polysiloxanes. The thermoplastic resin compositions exhibit improved resistance to streaking compared to such thermoplastic resin compositions which incorporate titanium dioxide having a first coating and at least one additional coating.

Polycarbonate resin blends containing titanium dioxide

A thermoplastic resin composition contains an aromatic carbonate resin, a rubber modified graft copolymer comprising a discontinuous rubber phase dispersed in a continuous rigid thermoplastic phase, wherein at least a portion of the rigid thermoplastic phase is chemically grafted to the rubber phase, wherein the rubber phase of the copolymer is made by an aqueous emulsion polymerization in the presence of a (C.sub.30 -C.sub.108)polyacid surfactant, and a flame retarding amount of an organophosphorus flame retardant.

Flame retardant polycarbonate resin/ABS graft copolymer blends having

A thermoplastic resin composition that contains a branched polycarbonate resin, a rubber modified graft copolymer that contains a discontinuous elastomeric phase dispersed in a continuous rigid thermoplastic phase, wherein at least a portion of the rigid thermoplastic phase is chemically grafted to the elastomeric phase, a sterically hindered phenol stabilizer compound, a thioester stabilizer compound and a phosphite stabilizer compound, exhibits improved stability.

Polycarbonate/rubber-modified graft copolymer resin blends having

A process for making bis(ether anhydrides) employs alkylamines having low melting temperatures thus allowing for novel intermediate process steps for preparing bis(ether anhydrides). The alkylamines have alkyl groups which contain at least three carbon atoms and have boiling temperatures in the range of 48 to 250.degree. C. at atmospheric pressure. As a result of using these amines, liquid alkylamines now can be employed in the imidization process step. The N-alkyl nitrophthalimides prepared from the recovered imidization product according to this invention can now be purified using liquid/liquid extraction or vacuum distillation. The alkyl nitrophthalimides prepared according to this invention provide for displacement reactions which now can be run at a high solids level. Likewise, the exchange reaction can be run at a higher solids level, and thus achieves an efficiency level which is higher than conventional processes.

Process for preparing bis (ether anhydrides) using alkylamine derived

Process for preparing BIS(ether anhydrides) using alkylamine derived

A light resistant polymer composition useful for molding applications is provided. The polymer composition comprises a blend of polycarbonate resin with a graft copolymer resin and an acylated sterically hindered amide. The compositions have improved physical properties as compared to compositions containing hindered amine light stabilizers.

Light resistant compositions of polycarbonate and graft copolymer resins

A process for making bis(ether anhydrides) employs alkylamines having low melting temperatures thus allowing for novel intermediate process steps for preparing bis(ether anhydrides). The alkylamines have alkyl groups which contain at least three carbon atoms and have boiling temperatures in the range of 48.degree. to 250.degree. C. at atmospheric pressure. As a result of using these amines, liquid alkylamines now can be employed in the imidization process step. The N-alkyl nitrophthalimides prepared from the recovered imidization product according to this invention can now be purified using liquid/liquid extraction or vacuum distillation. The alkyl nitrophthalimides prepared according to this invention provide for displacement reactions which now can be run at a high solids level. Likewise, the exchange reaction can be run at a higher solids level, and thus achieves an efficiency level which is higher than conventional processes.

Process for preparing bis(ether anhydrides) using alkylamine derived

Reactions between a solid polar and a non-polar compound, especially nucleophilic aromatic substitution reactions between an alkali metal salt of a hydroxyaromatic compound or thio analog thereof and an activated halo- or nitro-substituted aromatic compound, are conducted in a non-polar organic solvent such as toluene or xylene, in the presence of a hexaalkylguanidinium or .alpha.,.omega.-bis(pentaalkylguanidinium)alkane salt, or a corresponding heterocyclic salt, as a phase transfer catalyst. The method is particularly useful for the preparation of bisimides from bisphenol A or 4,4'-biphenol salts and 4-nitro- or 4-halophthalimides.

Method for conducting organic reactions using guanidinium salt as phase

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Scotia, NY, United States of America

James P Barren