1
Daniel J Brunelle, Thomas L Evans, Thomas G Shannon, David A Williams: Cyclic polycarbonate oligomers and methods for their preparation and use. General Electric Company, William H Pittman, James C Davis Jr, James Magee Jr, February 17, 1987: US04644053 (69 worldwide citation)

Cyclic polycarbonate (or thiol analog) oligomer mixtures are prepared by the reaction of bishaloformates or their thio analogs or mixtures thereof with dihydroxy or dimercapto compounds, with alkali metal hydroxides and various amines. The oligomer mixtures may be converted to polycarbonates or thei ...


2
Thomas L Evans, David A Williams: Method for preparing linear polycarbonate from cyclic oligomer with aryl carbanion generating catalyst. General Electric Company, William H Pittman, James C Davis Jr, James Magee Jr, August 12, 1986: US04605731 (56 worldwide citation)

Cyclic polycarbonate oligomers are converted to linear polycarbonate resins by heating with a polycarbonate formation catalyst which generates aryl carbanions at temperatures up to about 300.degree. C. The preferred catalysts are tetraarylborates such as tetramethylammonium tetraphenylborate.


3
James A Cella, Marsha M Grade, Thomas L Evans: Flame retardant wire coating compositions. General Electric Company, William A Teoli, James C Davis Jr, James Magee Jr, September 1, 1987: US04690997 (39 worldwide citation)

Flame retardant silicon-polyimides are provided having improved elongation which are useful as wire coating compositions.


4
Thomas L Evans, Daniel J Brunelle, Jean E Bradt, Eric J Pearce, Paul R Wilson: Polymerization of macrocyclic poly(alkylene dicarboxylate) oligomers. General Electric Company, William H Pittman, November 14, 1995: US05466744 (33 worldwide citation)

Macrocyclic polyester oligomer compositions comprising alkylene isophthalate or terephthalate units or the like are prepared by the reaction of a diol with a diacid chloride in the presence of at least one amine characterized by substantially no steric hindrance around the basic nitrogen atom. The r ...


5
Daniel J Brunelle, Thomas L Evans, Michael A Vallance, Kevin R Stewart, Thomas G Shannon, David A Williams, Dwight J Patterson, Niles R Rosenquist, William Hilakos: Method for converting cyclic polycarbonate oligomer mixtures to linear polycarbonate, and composition resulting therefrom. General Electric Company, William H Pittman, James C Davis Jr, James Magee Jr, April 26, 1988: US04740583 (33 worldwide citation)

Cyclic polycarbonate (or thiol analog) oligomer mixtures are prepared by the reaction of bishaloformates or their thio analogs, or mixtures thereof with dihydroxy or dimercapto compounds, with alkali metal hydroxides and various amines. The oligomer mixtures may be converted to polycarbonates or the ...


6
Todd D Cook, Andrew J Salem, Thomas L Evans, Eric J Pearce, Kevin P McAlea: Macrocyclic filled compositions convertible to polyester composites. General Electric Company, William H Pittman, March 2, 1993: US05191013 (30 worldwide citation)

Thermoplastic polyester composites are prepared from compositions comprising a filler, at least one macrocyclic poly(alkylene dicarboxylate) oligomer and a polymerization catalyst therefor. The use of polyester oligomer mixtures is preferred, and they may be present in liquid or solid form. The poly ...


7
Daniel J Brunelle, Thomas L Guggenheim, James A Cella, Thomas L Evans, Luca P Fontana, Gary R Faler, James M Fukuyama, Eugene P Boden, Jonathan D Rich, Thomas G Shannon, Sharon J McCormick, Philip J McDermott, Alice M Colley, Joseph W Guiles: Macrocyclic oligomers containing spiro(bis)indane moietes. General Electric Company, William H Pittman, James C Davis Jr, December 25, 1990: US04980453 (28 worldwide citation)

Macrocyclic oligomers, including polycarbonates, polyesters, polyamides, polyimides, polyetherketones and polyethersulfones, are conveniently prepared from various spiro(bis)indane compounds, especially the 6,6'-difunctional 3,3',3'-tetramethylspiro(bis)indanes. The macrocyclic oligomers may be conv ...


8
Todd D Cook, Thomas L Evans, Kevin P McAlea, Eric J Pearce: Macrocyclic polyester compositions convertible to linear polyesters of improved integrity. General Electric Company, William H Pittman, April 5, 1994: US05300590 (25 worldwide citation)

The crystallinity of polyesters prepared from macrocyclic poly(1,4-butylene terephthalate) oligomers is reduced and cracking of molded parts suppressed by the incorporation therein of at least one other linear or macrocyclic poly(alkylene dicarboxylate) oligomer, such as poly(ethylene terephthalate) ...


9
John C Bushi, Girish T Dalal, Thomas L Evans, Andrew M Olah, Theodore J Schmitz, Andrew L Auvil, A Donald Meltzer, Stefanie Hahnen Schroeder, Anthony Kordecki: Multilayer composite pipe fluid conduit system using multilayer composite pipe and method of making the composite. PMD Holdings, Thoburn T Dunlap, Nestor W Shust, Valerie L Calloway, September 25, 2001: US06293311 (21 worldwide citation)

A multilayer composite pipe structure is described. The multilayer composite pipe comprises a hollow inner conduit, a first layer of adhesive, a metallic intermediate layer, a second layer of adhesive, as well as, the outer thermoplastic layer, respectively. The hollow inner conduit is made from any ...


10
Allen J Campbell, David M Dardaris, Gary R Faler, Patrick J McCloskey, Thomas L Evans: Redistribution of organic polycarbonate compositions. General Electric Company, William H Pittman, May 9, 1995: US05414057 (21 worldwide citation)

A process for the redistribution of an organic polycarbonate composition. The process involves melt equilibrating a starting polycarbonate composition (which may be a single polycarbonate or a mixture of polycarbonates, and may be or include recycled polycarbonate) having an initial weight average m ...