Patents by Inventor James Anthony Cella
James Anthony Cella has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 7115700Abstract: Polycarbonates containing low or undetectable levels of Fries rearrangement products and comprising repeat units derived from one or more of resorcinol, hydroquinone, methylhydroquinone, bisphenol A, and 4,4?-biphenol have been prepared by the melt reaction of one or more of the aforementioned dihydroxy aromatic compounds with an ester-substituted diaryl carbonate such as bis-methyl salicyl carbonate. Low, or in many instances undetectable, levels of Fries rearrangement products are found in the product polycarbonates obtained as the combined result of a highly effective catalyst system which suppresses the Fries reaction and the use of lower melt polymerization temperatures relative to temperatures required for the analogous polymerization reactions using diphenyl carbonate.Type: GrantFiled: May 19, 2005Date of Patent: October 3, 2006Assignee: General Electric CompanyInventors: James Anthony Cella, Jan Henk Kamps, Jan Pleun Lens, Kathryn Lynn Longley, Patrick Joseph McCloskey, Narayan Ramesh, Warren William Reilly, Paul Michael Smigelski, Jr., Marc Brian Wisnudel
-
Patent number: 7064173Abstract: A new silicone condensation reaction, the condensation between an alkoxy silane or siloxane and an organo-hydrosilane or siloxane and catalysts therefore is described and claimed.Type: GrantFiled: December 30, 2002Date of Patent: June 20, 2006Assignee: General Electric CompanyInventors: Slawomir Rubinsztajn, James Anthony Cella
-
Patent number: 6977057Abstract: A method for manufacturing an embossed surface including a polymer composition having reactive moieties and a first glass transition temperature of Tg1. The method includes embossing the surface at temperature Temb; and raising the first glass transition temperature Tg1 of the embossed polymeric surface to a second glass transition temperature Tg2 such that Tg2>Temb. In another embodiment, a method for improving the release of a polymeric surface from an embossing tool includes incorporating of one or more of fluorine atoms, silicon atoms, or siloxane segments into the backbone of the polymer. The methods are particularly suited for direct patterning of photoresists, fabrication of interdigitated electrodes, and fabrication of data storage media.Type: GrantFiled: April 19, 2002Date of Patent: December 20, 2005Assignee: General ElectricInventors: John Bradford Reitz, Thomas Bert Gorczyca, James Anthony Cella
-
Patent number: 6891015Abstract: High yields of ester-substituted diary carbonates such as bis-methyl salicyl carbonate were obtained by the condensation of ester-substituted phenols with phosgene in the presence of a phase transfer catalyst (PTC) and optionally a tertiary amine catalyst in a solvent free reaction system comprising an aqueous phase held at a pH of 8.3 or higher. The optimized conditions of the present invention use an excess of ester-substituted phenol relative to phosgene and high conversion of phosgene to ester-substituted diaryl carbonate is observed. The product ester-substituted diaryl carbonate may be conveniently isolated as a solid by filtration or as a liquid in which the excess ester-substituted phenols serves as solvent. The method represents an attractive route for the manufacture of bis methyl salicyl carbonate and ester-substituted diaryl carbonates generally. The ester-substituted diaryl carbonates are useful for the preparation and modification of polycarbonates.Type: GrantFiled: August 12, 2002Date of Patent: May 10, 2005Assignee: General Electric CompanyInventors: Timothy Brydon Burnell, Patrick Joseph McCloskey, Ganesh Kailasam, James Anthony Cella
-
Patent number: 6870025Abstract: Polycarbonates containing low or undetectable levels of Fries rearrangement products and comprising repeat units derived from one or more of resorcinol, hydroquinone, methylhydroquinone, bisphenol A, and 4,4?-biphenol have been prepared by the melt reaction of one or more of the aforementioned dihydroxy aromatic compounds with an ester-substituted diaryl carbonate such as bis-methyl salicyl carbonate. Low, or in many instances undetectable, levels of Fries rearrangement products are found in the product polycarbonates obtained as the combined result of a highly effective catalyst system which suppresses the Fries reaction and the use of lower melt polymerization temperatures relative to temperatures required for the analogous polymerization reactions using diphenyl carbonate.Type: GrantFiled: December 23, 2002Date of Patent: March 22, 2005Assignee: General Electric CompanyInventors: Patrick Joseph McCloskey, Jan Pleun Lens, James Anthony Cella, Jan Henk Kamps, Kathryn Lynn Longley, Narayan Ramesh, Warren William Reilly, Paul Michael Smigelski, Jr., Marc Brian Wisnudel
-
Publication number: 20040265605Abstract: In one aspect the present invention provides a storage medium for data, the storage medium comprising: a) a substrate, a physical portion of which comprises at least one polyimide, and b) at least one data layer on the substrate. The substrate comprising a polyimide exhibits low axial displacement and beneficial damping characteristics.Type: ApplicationFiled: June 24, 2003Publication date: December 30, 2004Applicant: General Electric CompanyInventors: Eugene David Hermann, James Anthony Cella, John Bradford Reitz, Racid Kerboua, Irene Dris
-
Publication number: 20040220352Abstract: A process for the production of polycarbonate having increased end-cap levels, the process comprising adding a terminal blocking agent of the formula: 1Type: ApplicationFiled: March 17, 2004Publication date: November 4, 2004Inventors: Hans Peter Brack, James Anthony Cella, Dennis Karlik, Lina Prada
-
Publication number: 20040127668Abstract: A new silicone condensation reaction, the condensation between an alkoxy silane or siloxane and an organo-hydrosilane or siloxane and catalysts therefore is described and claimed.Type: ApplicationFiled: December 30, 2002Publication date: July 1, 2004Inventors: Slawomir Rubinsztajn, James Anthony Cella
-
Patent number: 6653434Abstract: A process for the production of polycarbonate by melt-polycondensing an aromatic dihydroxy compound and diphenylcarbonate, the process comprising adding the to polycarbonate under melt conditions a compound of the formula (1): wherein R1 and R3 may be the same or different and are selected from the group consisting of alkoxy, phenoxy, benzoxy, aryloxy, phenyl and aryl groups, R2 is selected from the group consisting of alkyl, phenyl, aryl, or aralkyl groups.Type: GrantFiled: December 19, 2001Date of Patent: November 25, 2003Assignee: General Electric CompanyInventors: Hans-Peter Brack, Daniel Joseph Brunelle, James Anthony Cella, Dennis Karlik
-
Patent number: 6630525Abstract: A polycarbonate is provided which contains residues of a dihydric phenol, at least one comonomer of a siloxane functional bisphenol, optionally, a branching agent and optionally, a flame retardant. Further embodiments of the present invention includes a method for producing a flame retardant polycarbonate.Type: GrantFiled: October 9, 2001Date of Patent: October 7, 2003Assignee: General Electric CompanyInventors: James Anthony Cella, James Ross Fishburn, James Alan Mahood
-
Patent number: 6620902Abstract: A process for preparing an end-capped polycarbonate comprises melt reacting an aromatic dihydroxy compound, a carbonic acid diester, and optionally a catalyst in a prepolymerization vessel to form a polycarbonate product; transferring the polycarbonate product from the prepolymerization vessel; mixing the polycarbonate product with an end-capping agent under hermetic seal at a pressure of at least about 760 mm Hg; and transferring the polycarbonate product and end-capping agent mixture to a postpolymerization vessel to endcap the polycarbonate product.Type: GrantFiled: April 8, 2002Date of Patent: September 16, 2003Assignee: General Electric CompanyInventors: Tomoaki Shimoda, Akio Ikeda, Takato Kimura, Ken Tamada, Hans-Peter Brack, Dennis Karlik, Lina Prada, Hendricus Franciscus Zirkzee, James Anthony Cella
-
Publication number: 20030149223Abstract: Polycarbonates containing low or undetectable levels of Fries rearrangement products and comprising repeat units derived from one or more of resorcinol, hydroquinone, methylhydroquinone, bisphenol A, and 4,4′-biphenol have been prepared by the melt reaction of one or more of the aforementioned dihydroxy aromatic compounds with an ester-substituted diaryl carbonate such as bis-methyl salicyl carbonate. Low, or in many instances undetectable, levels of Fries rearrangement products are found in the product polycarbonates obtained as the combined result of a highly effective catalyst system which suppresses the Fries reaction and the use of lower melt polymerization temperatures relative to temperatures required for the analogous polymerization reactions using diphenyl carbonate.Type: ApplicationFiled: December 23, 2002Publication date: August 7, 2003Applicant: General Electric CompanyInventors: Patrick Joseph McCloskey, Jan Pleun Lens, James Anthony Cella, Jan Henk Kamps, Kathryn Lynn Longley, Narayan Ramesh, Warren William Reilly, Paul Michael Smigelski, Marc Brian Wisnudel
-
Patent number: 6590068Abstract: Polycarbonate resin containing reduced levels of reaction by-products can be prepared by adding to the polycarbonate a scavenging agent having the formula: wherein R1 is alkoxy, phenoxy, benzyloxy or phenyl, and R2 is a substituted or unsubstituted C1-C30 alkyl group, C6-C30 aryl group, C7-C30 aralkyl group or C6-C30 aryloxy group and processing the resulting mixture at an elevated temperature and for a period of time such that the scavenging agent reacts with linear Fries products to produce capped linear Fries products, and with residual phenols (monohydric or dihydric) to produce capped phenols and ortho-substituted phenols.Type: GrantFiled: November 14, 2001Date of Patent: July 8, 2003Assignee: General Electric CompanyInventors: Hans Peter Brack, James Anthony Cella, Dennis Karlik, Lina Prada
-
Publication number: 20030105226Abstract: A polycarbonate is provided which contains residues of a dihydric phenol, at least one comonomer of a siloxane functional bisphenol, optionally, a branching agent and optionally, a flame retardant. Further embodiments of the present invention includes a method for producing a flame retardant polycarbonate.Type: ApplicationFiled: October 9, 2001Publication date: June 5, 2003Applicant: General Electric CompanyInventors: James Anthony Cella, James Rose Fishburn, James Alan Mahood
-
Publication number: 20030100704Abstract: Polycarbonate resin containing reduced levels of reaction by-products can be prepared by adding to the polycarbonate a scavenging agent having the formula: 1Type: ApplicationFiled: November 14, 2001Publication date: May 29, 2003Inventors: Hans Peter Brack, James Anthony Cella, Dennis Karlik, Lina Prada
-
Publication number: 20030088051Abstract: A process for preparing an end-capped polycarbonate comprises melt reacting an aromatic dihydroxy compound, a carbonic acid diester, and optionally a catalyst in a prepolymerization vessel to form a polycarbonate product; transferring the polycarbonate product from the prepolymerization vessel; mixing the polycarbonate product with an end-capping agent under hermetic seal at a pressure of at least about 760 mm Hg; and transferring the polycarbonate product and end-capping agent mixture to a postpolymerization vessel to endcap the polycarbonate product.Type: ApplicationFiled: April 8, 2002Publication date: May 8, 2003Applicant: General Electric CompanyInventors: Tomoaki Shimoda, Akio Ikeda, Takato Kimura, Ken Tamada, Hans-Peter Brack, Dennis Karlik, Lina Prada, Hendricus Franciscus Zirkzee, James Anthony Cella
-
Publication number: 20030078347Abstract: In various embodiments the present invention comprises 2,4,6-trisubstituted-1,3,5-triazine capping agents comprising one, two, or three leaving groups as substituents with any remaining substituents being essentially inert to reaction with a nucleophilic group on a polymer or monomer, or reactive with a nucleophilic group on a polymer or monomer at a slower rate than any leaving group. The invention also comprises polymers or monomers with nucleophilic groups capped with a triazine moiety. Still other embodiments of the invention comprise processes for capping nucleophilic groups in a polymer or monomer which comprises combining and reacting the polymer or monomer with a triazine-comprising capping agent.Type: ApplicationFiled: August 28, 2001Publication date: April 24, 2003Applicant: General Electric CompanyInventors: Sterling Bruce Brown, Hans Peter Brack, James Anthony Cella, Dennis Karlik
-
Publication number: 20030057601Abstract: A method for manufacturing an embossed surface comprising a polymer with a first glass transition temperature Tg1 comprises embossing the surface a temperature Temb; and raising the first glass transition temperature Tg1 of the embossed polymeric surface to a second glass transition temperature Tg2 such that Tg2>Temb. In another embodiment, a method for improving the release of a polymeric surface from an embossing tool comprises incorporating of one or more of fluorine atoms, silicon atoms, or siloxane segments into the backbone of polymer. The methods are particular suited for direct patterning of photoresists, fabrication of interdigitated electrodes, and fabrication of data storage media.Type: ApplicationFiled: April 19, 2002Publication date: March 27, 2003Inventors: John Bradford Reitz, Thomas Bert Gorczyca, James Anthony Cella
-
Publication number: 20030060649Abstract: High yields of ester-substituted diary carbonates such as bis-methyl salicyl carbonate were obtained by the condensation of ester-substituted phenols with phosgene in the presence of a phase transfer catalyst (PTC) and optionally a tertiary amine catalyst in a solvent free reaction system comprising an aqueous phase held at a pH of 8.3 or higher. The optimized conditions of the present invention use an excess of ester-substituted phenol relative to phosgene and high conversion of phosgene to ester-substituted diaryl carbonate is observed. The product ester-substituted diaryl carbonate may be conveniently isolated as a solid by filtration or as a liquid in which the excess ester-substituted phenols serves as solvent. The method represents an attractive route for the manufacture of bis methyl salicyl carbonate and ester-substituted diaryl carbonates generally. The ester-substituted diaryl carbonates are useful for the preparation and modification of polycarbonates.Type: ApplicationFiled: August 12, 2002Publication date: March 27, 2003Applicant: General Electric CompanyInventors: Timothy Brydon Burnell, Patrick Joseph McCloskey, Ganesh Kailasam, James Anthony Cella
-
Patent number: 6500914Abstract: A method for end-capping polycarbonate resins, comprising the step of processing a mixture comprising a polycarbonate having free hydroxyl-end groups and an end-capping reagent in a melt transesterification reaction to produce a polycarbonate resin, wherein the end-capping reagent comprises a mixture of:(a) at least one species of a symmetrical activated aromatic carbonate, and (b) at least one species of a symmetrical non-activated aromatic carbonate, whereby said end-capping reagent reacts with at least some of the free hydroxyl end-groups of the polycarbonate to produce an end-capped polycarbonate resin.Type: GrantFiled: October 10, 2001Date of Patent: December 31, 2002Assignee: General Electric CompanyInventors: Hans Peter Brack, James Anthony Cella, Dennis Karlik, Paul Michael Smigelski, Jr.