51
Phillip A Waitkus, Gaetano F D Alelio: Polyimide derivatives having terminal unsaturated amides. Plastics Engineering Company, Walter J Monacelli, February 23, 1982: US04316843 (5 worldwide citation)

Novel compositions comprising unsaturated polyimide-polyamides and processes for their preparation are disclosed herein. These new compositions are primarily derivatives of anhydride-terminated aromatic polyimides from which they are prepared by amidation to provide unsaturated amide groups having t ...


52
Gaetano F D Alelio deceased, Phillip A Waitkus: Vinylacetylene-terminated polymide derivatives. Plastics Engineering Company, Walter J Monacelli, March 6, 1984: US04435323 (5 worldwide citation)

Novel, unsaturated vinylacetylene-terminated polyimides and processes for their preparation are disclosed herein. These new polyimides are derivatives of anhydride-terminated aromatic polyimides from which they can be prepared by amidation to provide new unsaturated amide groups having a terminal gr ...


53
Phillip A Waitkus: Novel thermosetting compositions and molding method. Plastics Engineering Company, Quarles & Brady, November 14, 1989: US04880893 (4 worldwide citation)

A thermosetting resin containing composition can be heated to reduce its viscosity and used as a liquid in a liquid injection molding method. It has a phenolic resin content of about 80% to about 90% solids by weight, and contains about 5% to about 40% of a polyglycol. The composition may also conta ...


54
Phillip A Waitkus, Gaetano F D Alelio: Polyamide derivatives having unsaturated terminal amic acid groups. Plastics Engineering Company, Walter J Monacelli, March 22, 1983: US04377536 (4 worldwide citation)

Novel compositions comprising unsaturated polyhemi-amic acid compositions and processes for their preparation are disclosed herein. These new compositions are primarily derivatives of anhydride-terminated aromatic polyimides from which they are prepared by amidation to provide unsaturated amide grou ...


55
Gaetano F D Alelio deceased, Phillip A Waitkus: Addition products of diacetylene-terminated polyimide derivatives and a dienophile having a terminal vinyl group. Plastics Engineering Company, Walter J Monacelli, March 22, 1983: US04377525 (4 worldwide citation)

Novel, unsaturated diacetylene-terminated polyimides and processes for their preparation are disclosed herein. These new polyimides are derivatives of anhydride-terminated aromatic polyimides from which they can be prepared by amidation to provide new unsaturated amide groups having a terminal group ...


56
Phillip A Waitkus, Theodore N Morrison: Polymer composition for curing novolac resins. Plastics Engineering Company, Quarles & Brady, May 27, 2003: US06569918 (4 worldwide citation)

A polymer composition that can be used to cure a novolac resin at a lower temperature than conventional curing agents and with reduced emission of volatile compounds is disclosed. The curing agent composition is prepared by mixing and reacting in aqueous solution a phenolic monomer and an aldehyde i ...


57
Patrick A Tooman, Bruce Casey: Valve gate assembly. Plastics Engineering & Technical Services, Warn Partners P C, June 5, 2012: US08192191 (3 worldwide citation)

A valve gate assembly for regulating a flow of molten material into a mold. The valve gate assembly includes a movable valve that can be positioned between a fully closed position and a fully open position. The valve gate assembly further includes an actuating system operatively cooperating with the ...


58
David Chiorgno, Peter J Olsta: Breakdown reel. Pittsfield Plastics Engineering, Robert L Rispoli, March 31, 2009: US07510138 (3 worldwide citation)

The present device provides a breakdown reel that includes a spool barrel, at least one flange and likely two, one disposed at each end of the barrel, and a locking mechanism such that the flange lockingly engages and removeably disengages the barrel. The locking mechanism is divided into two sectio ...


59
Gaetano F D Alelio, Phillip A Waitkus: Polymerization products of polyimide derivatives having acetylenic terminal amide groups. Plastics Engineering Company, Walter J Monacelli, March 16, 1982: US04320217 (3 worldwide citation)

Novel compositions comprising polymerization products of polyimide derivatives having terminal acetylenic amide groups and processes for their preparation are disclosed herein. These new compositions are primarily polymers of derivatives of anhydride-terminated aromatic polyimides from which these d ...


60
Filiere dextrusion annulaire. Sussex Plastics Engineering, August 31, 1979: FR2416105-A1 (3 worldwide citation)

L'invention concerne une filière d'extrusion annulaire comprenant une bague de cisaillement rotative provoquant une action de pompage et de cisaillement sur la matière plastique lorsqu'elle passe à travers l'espace annulaire de la filière, ainsi qu'un procédé pour effectuer des extrusions annulaires ...