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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Piotrowski; Andrzej M.
Address:
Peekskill, NY
No. of patents:
15
Patents:












Patent Number Title Of Patent Date Issued
5723574 Removal of catalyst residues from polyketone compositions March 3, 1998
Catalyst residues are removed from polyketone compositions by use of a beta diketone compound, e.g., an acetylacetone reagent.
5565546 Copolymer of carbon monoxide and ethylene containing ketal structures October 15, 1996
Copolymers comprising carbon monoxide and ethylene contain at least one type of ketal structure and possess enhanced thermal stability so as to be useful in the melt processing of fibers. These novel copolymers, as well as known polyketones with ketal structures, can be formed by treatin
5523385 Polymerization of carbon monoxide and ethylene using catalyst containing non-coordinating, non-a June 4, 1996
Carbon monoxide and ethylene are polymerized in the presence of a catalytically effective amount of a catalyst formed from a Group VIII metal source, such as palladium, a bidentate ligand containing a Group VA or VIA heteroatom, such as phosphorus, and an anion which is a non-coordin
5506338 Polymerization of carbon monoxide and ethylene using catalyst containging non-coordinating, non- April 9, 1996
Carbon monoxide and ethylene are polymerized in the presence of a catalytically effective amount of a catalyst formed from a Group VIII metal source, such as palladium, a bidentate ligand containing a Group VA or VIA heteroatom, such as phosphorus, and an anion which is a non-coordin
5494998 Polymerization of carbon monoxide and ethylene using catalyst containing non-coordinating, non-a February 27, 1996
Carbon monoxide and ethylene are polymerized in the presence of a catalytically effective amount of a catalyst formed from a Group VIII metal source, such as palladium, a bidentate ligand containing a Group VA or VIA heteroatom, such as phosphorus, and an anion which is a non-coordin
5473036 Process for forming a bromomagnesium tetrakis (fluorophenyl) borate December 5, 1995
Bromomagnesium tetrakis(fluorophenyl) borate reactible intermediates can be formed by reacting at least four equivalents of fluorophenyl magnesium bromide with every one equivalent of boron trifluoride in ether solvent using a sufficient amount of heat to drive the reaction to completion
5371127 Stabilized carbon monoxide-olefin copolymers December 6, 1994
Polyketone compositions can be stabilized by the addition of a suitable stabilizing amount of a blend of a hindered phenol compound, such as a thioester-containing hindered phenol and an epoxy compound (such as an epoxy cycloaliphatic carboxylate).
5270441 Copolymer of carbon monoxide and propylene produced in water/ketone solvent December 14, 1993
A linear alternating copolymer of carbon monoxide and propylene, which is substantially free of ester and ether linkages, is formed by the catalyzed reaction of carbon monoxide and propylene in a ketone solvent medium (e.g., acetone). Acid end groups can be introduced if a mixture of wat
5231164 Removal of catalyst residue from polyketone solution with silica gel or metal oxide containing w July 27, 1993
Catalyst residue (e.g., trace Group VIII metal) is removed from a polyketone solution, and from the polyketone resin itself, by passing the solution through a column comprising a metal oxide (e.g., silica gel) which is effective in removing the residue therefrom or by mixing the poly
5194210 Process for making polyketone fibers March 16, 1993
Fibers of an alternating carbon monoxide-ethylene polymer having a molecular weight of at least 100,000 g/mole and a birefringence of at least 650.times.10.sup.-4 can be formed by first extruding a solution of the polymer in a mixed solvent system comprising an aromatic alcohol which
5109047 Plasticization of polyvinyl chloride with carbon monoxide-propylene copolymer April 28, 1992
Polyvinyl chloride resin can be plasticized with a carbon monoxide-propylene copolymer. Since the copolymer is soluble in organic solvent, it and the polyvinyl chloride can be dissolved in an organic solvent and then cast to form a film. The copolymer can be a liquid, relatively low
5108972 Process of making halide/alkoxy-containing magnesium complex April 28, 1992
Hydrocarbon-soluble complexes of magnesium haloalkoxides and alcohols (X.sub.n Mg(OR).sub.2-n.mR'OH pR"OH) are prepared in a non-Grignard reaction involving combination of sources of magnesium, halide, and alkoxide in the presence of an excess of the alcohol for the desired alkoxy gr
5102843 Catalyst and catalytic process for preparation of polyketones April 7, 1992
Polyketone copolymers can be formed by polymerizing carbon monoxide and an olefin in the presence of a Group VIII metal (e.g., palladium) complex containing a bis(diphenylphosphino)ferrocene bidentate ligand and an anion of an acid having a pKa of less than 2 (e.g., para-toluenesulfonic
5034549 Olefin polymerization catalyst July 23, 1991
Silicon or siloxane diols react with dicyclopentadienyl zirconium compounds to form catalytically active compositions. These compositions can be used to polymerize ethylene when combined with methylaluminoxane.
4945076 Polymerization catalyst system July 31, 1990
The activity of olefin polymerization catalysts comprising a Group IVB transition metal compound and an aluminoxane can be improved by the addition of a hydroxysiloxane compound.










 
 
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