Patents by Inventor David P. Sinclair
David P. Sinclair 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).
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Patent number: 7214415Abstract: Monolayer packages comprised of an oxygen scavenging composition suitable for direct contact with package contents and recycle with other polyester bottles are disclosed. The oxygen scavenging composition is comprised of a modified copolymer which is comprised of predominantly polyester segments and an oxygen scavenging amount of oxygen scavenging segments. The polyester segments comprise segments derived from typical bottling and packaging polyesters such as PET and PEN. Use of these oxygen scavenging copolymers in bottles provides a clear and rigid monolayer bottle similar in appearance to unmodified polyester bottles. In a series of preferred embodiments, bottles fabricated with the oxygen scavenging copolymers of this invention are over 99 wt % PET and contain less than 50 ppb of extractable components.Type: GrantFiled: February 8, 2005Date of Patent: May 8, 2007Assignee: BP Corporation North America Inc.Inventors: James M. Tibbitt, Paul J. Cahill, George E. Rotter, David P. Sinclair, Gary T. Brooks, Raymond T. Behrends
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Patent number: 6863988Abstract: Monolayer packages comprised of an oxygen scavenging composition suitable for direct contact with package contents and recycle with other polyester bottles are disclosed. The oxygen scavenging composition is comprised of a modified copolymer which is comprised of predominantly polyester segments and an oxygen scavenging amount of oxygen scavenging segments. The polyester segments comprise segments derived from typical bottling and packaging polyesters such as PET and PEN. Use of these oxygen scavenging copolymers in bottles provides a clear and rigid monolayer bottle similar in appearance to unmodified polyester bottles. In a series of preferred embodiments, bottles fabricated with the oxygen scavenging copolymers of this invention are over 99 wt % PET and contain less than 50 ppb of extractable components.Type: GrantFiled: October 25, 2001Date of Patent: March 8, 2005Assignee: BP Corporation North America Inc.Inventors: James M. Tibbitt, Paul J. Cahill, George E. Rotter, David P. Sinclair, Gary T. Brooks, Raymond T. Behrends
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Publication number: 20020183448Abstract: Monolayer packages comprised of an oxygen scavenging composition suitable for direct contact with package contents and recycle with other polyester bottles are disclosed. The oxygen scavenging composition is comprised of a modified copolymer which is comprised of predominantly polyester segments and an oxygen scavenging amount of oxygen scavenging segments. The polyester segments comprise segments derived from typical bottling and packaging polyesters such as PET and PEN. Use of these oxygen scavenging copolymers in bottles provides a clear and rigid monolayer bottle similar in appearance to unmodified polyester bottles. In a series of preferred embodiments, bottles fabricated with the oxygen scavenging copolymers of this invention are over 99 wt % PET and contain less than 50 ppb of extractable components.Type: ApplicationFiled: October 25, 2001Publication date: December 5, 2002Inventors: James M. Tibbitt, George E. Rotter, David P. Sinclair, Gary T. Brooks, Raymond T. Behrends
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Patent number: 6462107Abstract: Compositions for forming polymeric layers useful in the manufacture printed wiring boards and other electrical interconnecting devices are disclosed. The compositions typically are processable in aqueous base and can be made photosensitive with the addition of a positive acting photosensitive compound. The compositions are particularly useful in the manufacture of laminable films used to make printed wiring boards. Multilayer printed wiring boards made using such films, and methods for making and using the films and boards, also are disclosed.Type: GrantFiled: December 22, 1998Date of Patent: October 8, 2002Assignee: The Texas A&M University SystemInventors: David P. Sinclair, Douglas E. Fjare, John T. Hoback, Terre L. VanKirk, Donald E. Rubis, David A. Wargowski, Wen-Feng Liu, Paul A. Sanchez
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Patent number: 5643995Abstract: A method for improving the processability of a crystalline polyphthalamide having high heat deflection temperature when filled with glass fibers by compounding with an amount of a polyarylene sulfide sufficient to reduce melt viscosity.Type: GrantFiled: June 7, 1995Date of Patent: July 1, 1997Assignee: Amoco CorporationInventors: M. Jamal El-Hibri, Yu-Tsai Chen, David P. Sinclair
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Patent number: 5635558Abstract: Polymer blends comprise a crystalline polyphthalamide component having high heat deflection temperature when filled with glass fibers and a polyarylene sulfide component.Type: GrantFiled: June 7, 1995Date of Patent: June 3, 1997Assignee: Amoco CorporationInventors: Yu-Tsai Chen, David P. Sinclair
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Patent number: 5464919Abstract: The invention relates to polyester-polyurethane hybrid resins containing halogenated aromatic polycarboxylate moieties to obtain flame retardance without significantly affect the preparation, processing and physical properties of the hybrid resins.Type: GrantFiled: May 11, 1994Date of Patent: November 7, 1995Assignee: Cook Composites and Polymers Co.Inventor: David P. Sinclair
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Patent number: 5344852Abstract: Water blown, thermosetting unsaturated polyester-polyurethane hybrid foam compositions are formed by the reaction of an A side composition and a B side composition. The A side composition comprises a polyfunctional isocyanate compound and a free radical initiator. The B side composition comprises a mixture of: (i) an ethylenically unsaturated monomer solution having dissolved therein about 30-90 weight percent of a polyester polyol having at least one ethylenically unsaturated group per molecule which has predominantly hydroxyl end groups; (ii) an amine compound having two or more primary or secondary amine groups in an amount effective to react with the A side composition to form small urea domains finely dispersed within a continuous polyester-polyurethane hybrid phase; and (iii) about 25 to about 150 equivalents water based on 100 equivalents of active hydrogen in the B side.Type: GrantFiled: February 24, 1993Date of Patent: September 6, 1994Assignee: Aristech Chemical CorporationInventors: Gary T. Brooks, Harold R. Edwards, Jr., Kathy J. Thrash, Donald E. Rubis, David P. Sinclair
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Patent number: 5264544Abstract: Amorphous polyamide compositions are provided which are transparent and have improved glass transition and thermal decomposition temperatures. The polyamide compositions of the present invention can be prepared as the polymeric condensation product of a diamine component comprising neopentyldiamine, and a diacid component comprising an aromatic dicarboxylic acid.Type: GrantFiled: July 15, 1992Date of Patent: November 23, 1993Assignee: Amoco CorporationInventors: Edward E. Paschke, Wassily Poppe, David P. Sinclair
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Patent number: 5153250Abstract: Improved polyphthalamide compositions, particularly for injection molding applications, comprise a polyphthalamide component with at least two recurring units selected from terephthalamide, isophthalamide and adipamide units and having high heat deflection temperature when filled with glass fibers; reinforcing fibers; and effective amounts of particulate talc. Molded articles prepared from such compositions exhibit excellent mechanical and thermal properties, including high heat deflection temperature, even when molded using molds heated below Tg of the polyphthalamide component, often facilitating molding using steam or hot water-heated molds.Type: GrantFiled: June 20, 1991Date of Patent: October 6, 1992Assignee: Amoco CorporationInventor: David P. Sinclair
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Patent number: 5081223Abstract: Amorphous polyamide compositions are provided which are transparent and have improved glass transition and thermal decomposition temperatures. The polyamide compositions of the present invention can be prepared as the polymeric condensation product of a diamine component comprising neopentyldiamine, and a diacid component comprising an aromatic dicarboxylic acid.Type: GrantFiled: February 27, 1990Date of Patent: January 14, 1992Assignee: Amoco CorporationInventors: Edward E. Paschke, Wassily Poppe, David P. Sinclair
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Patent number: 4603166Abstract: Novel crystalline polyamides having high heat deflection temperatures when filled are prepared from aliphatic diamines and either mixtures of terephthalic acid and adipic acid or mixtures of terephthalic acid, isophthalic acid and adipic acid. The mole ratio of aliphatic diamine to terephthalic acid, isophthalic acid, and adipic acid is in the range of about 100:65-95:25-0:35-5. The polyamides can be filled with about 10 to about 60 parts by weight of a filler. The mechanical properties of these polyamides are largely unaffected by absorbed water.Type: GrantFiled: February 8, 1985Date of Patent: July 29, 1986Assignee: Amoco CorporationInventors: Wassily Poppe, Yu-Tsai Chen, Larry W. Autry, Joel A. Richardson, David P. Sinclair
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Patent number: 4528361Abstract: High molecular weight linear aromatic amorphous copolymers comprising copolymers of p- , m-hydroxymethylbenzoic acid and mixtures thereof and a polyamide are prepared in ratios of 1:20 to 20:1. The resulting polymers have an inherent viscosity of at least 0.4 dl/g in a 60/40 phenol/tetrachloroethane solvent at 30.degree. C., good molding properties and improved hydrophylic properties as compared with nylon-6.Type: GrantFiled: December 19, 1983Date of Patent: July 9, 1985Assignee: Standard Oil Company (Indiana)Inventor: David P. Sinclair
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Patent number: 4242316Abstract: Polymerization process for the solution or bulk polymerization of chlorocyclophosphazenes using sulfamic acid compounds or derivatives of sulfamic acid as catalyst. Poly(aryloxyphosphazene) resulting therefrom can be controlled as to molecular weight, and molecular weight distribution.Type: GrantFiled: June 29, 1979Date of Patent: December 30, 1980Assignee: Standard Oil Company (Indiana)Inventor: David P. Sinclair
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Patent number: RE34447Abstract: Novel crystalline polyamides having high heat deflection temperatures when filled are prepared from aliphatic diamines and either mixtures of terephthalic acid and adipic acid or mixtures of terephthalic acid, isophthalic acid and adipic acid. The mole ratio of aliphatic diamine to terephthalic acid, isophthalic acid, and adipic acid is in the range of about 100:65-95:25-0:35-5. The polyamides can be filled with about 10 to about 60 parts by weight of a filler. The mechanical properties of these polyamides are largely unaffected by absorbed water.Type: GrantFiled: July 21, 1988Date of Patent: November 16, 1993Assignee: Amoco CorporationInventors: Wassily Poppe, Larry W. Autry, Yu-Tsai Chen, Joel A. Richardson, David P. Sinclair