1
Norberto Silvi, Patrick Joseph McCloskey, James Day, Mark Howard Giammattei: Extrusion method for making polycarbonate. General Electric Company, Andrew J Caruso, Noreen C Johnson, January 14, 2003: US06506871 (45 worldwide citation)

Extrusion of a mixture of an ester-substituted diaryl carbonate, such as bis(methyl salicyl) carbonate, a dihydroxy aromatic compound such as bisphenol A and a transesterification catalyst such as tetrabutylphosphonium acetate (TBPA) affords polycarbonate having a weight average molecular weight of ...


2
Norberto Silvi, William R Haaf, Mark Giammattei, Robert Hossan, Thomas J Stanley, William D Richards: Method for the preparation of conductive polyphenylene ether-polyamide compositions. General Electric Company, December 1, 1998: US05843340 (29 worldwide citation)

Conductive polyphenylene ether-polyamide compositions having excellent ductility are prepared by melt blending polyphenylene ether, an unsaturated impact modifying polymer and a functionalizing compound in an initial step, optionally in combination with a portion of the polyamide, and subsequently m ...


3
Norberto Silvi, Mark Howard Giammattei, Patrick Joseph McCloskey, Alberto Nisoli, James Day, Narayan Ramesh, Paul Michael Smigelski Jr, Paul Russell Wilson: Method for making an aromatic polycarbonate. General Electric Company, Andrew J Caruso, Patrick K Patnode, September 14, 2004: US06790929 (27 worldwide citation)

This invention relates to an extrusion method preparing polycarbonates from a solution of an oligomeric polycarbonate. A mixture of bis(methyl salicyl)carbonate (BMSC), BPA and a transesterification catalyst are first equilibrated at moderate temperatures to provide a solution of polycarbonate oligo ...


4
Norberto Silvi, Mark H Giammattei, Jan P Keulen, David W Woodruff, Paul R Wilson, Paul W Buckley, Norman Enoch Johnson: Method of separating a polymer from a solvent. General Electric Company, September 27, 2005: US06949622 (17 worldwide citation)

A method of separating a polymer-solvent mixture is described wherein a polymer-solvent mixture is heated prior to its introduction into an extruder comprising an upstream vent and/or a side feeder vent to allow flash evaporation of the solvent, and downstream vents for removal of remaining solvent. ...


5
Patrick Joseph McCloskey, Norberto Silvi, Alberto Nisoli, Mark Giammattei: Process to make polycarbonate from bismethylsalicylcarbonate (BMSC). General Electric Company, Marina Larson & Associates, November 7, 2006: US07132498 (13 worldwide citation)

The present invention relates to a method of preparing polycarbonate comprising the steps of: (i) introducing to an extruder through a feed port a plurality of reaction components comprising a polycarbonate oligomer, an activated carbonate residue, and a transesterification catalyst, wherein the ext ...


6
Norberto Silvi, William R Haaf, Mark Giammattei, Robert Hossan, Thomas J Stanley, William D Richards: Conductive polyphenylene ether-polyamide compositions and method for their preparation. General Electric Company, March 5, 2002: US06352654 (13 worldwide citation)

Conductive polyphenylene ether-polyamide compositions having excellent ductility are prepared by melt blending polyphenylene ether, an unsaturated impact modifying polymer and a functionalizing compound in an initial step, optionally in combination with a portion of the polyamide, and subsequently m ...


7
Jiawen Dong, Mark H Giammattei, Norberto Silvi: Method of separating a polymer from a solvent. General Electric Company, August 2, 2005: US06924350 (12 worldwide citation)

A method of separating a polymer-solvent mixture is described wherein a polymer-solvent mixture is heated prior to its introduction into an extruder comprising as upstream vent and/or a side feeder vent to allow flash evaporation of the solvent, and downstream vents for removal of remaining solvent. ...


8
Norberto Silvi, Sterling B Brown, Mark H Giammattei, King L Howe: Compatibilized blends of polyetherimides and liquid crystalline polyesters. General Electric Company, E I Du pont de Nemours & Company, William H Pittman, May 27, 1997: US05633319 (12 worldwide citation)

Non-delaminating resinous compositions are prepared by blending at least one polyetherimide, at least one liquid crystalline polyester in an amount to provide lower melt viscosity, and a compatibilizing amount of at least one polyepoxy compound. The compositions may also contain a minor proportion o ...


9
Paul W Buckley, Jiawen Dong, Mark H Giammattei, Hua Guo, Robert John Hossan, Christian Lietzau, Norberto Silvi: Methods of preparing a polymeric material composite. General Electric, May 9, 2006: US07041780 (10 worldwide citation)

Methods to prepare a poly(arylene ether) and poly(alkenyl aromatic) polymeric material having reduced levels of particulate impurities are described. The polymeric material prepared is suitable for use in data storage media applications.


10
Norberto Silvi, William R Haaf, Mark Giammattei, Robert Hossan, Thomas J Stanley, William D Richards: Conductive polyphenylene ether-polyamide compositions and methods for their preparation. General Electric Company, January 9, 2001: US06171523 (10 worldwide citation)

Conductive polyphenylene ether-polyamide compositions having excellent ductility are prepared by melt blending polyphenylene ether, an unsaturated impact modifying polymer and a functionalizing compound in an initial step, optionally in combination with a portion of the polyamide, and subsequently m ...