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Richard Karpeles Phones & Addresses

  • 21 Wild Rose Dr, Nashua, NH 03063 (603) 521-7557
  • 28 Royal Crest Dr #10, Nashua, NH 03060
  • 190 Shagbark Ct, Cheshire, CT 06410 (203) 272-2474
  • Billerica, MA
  • New Haven, CT
  • Farmington Hills, MI
  • Los Angeles, CA

Publications

Us Patents

Metallocene Catalyst Composition And Process For Activating A Metallocene Procatalyst

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US Patent:
6147025, Nov 14, 2000
Filed:
Dec 15, 1997
Appl. No.:
8/990922
Inventors:
Daniel J. Gillis - West Haven CT
Richard Karpeles - Cheshire CT
Assignee:
Uniroyal Chemical Company, Inc, - Middlebury CT
International Classification:
B01J 3100
US Classification:
502128
Abstract:
A metallocene catalyst is provided which comprises the product obtained by combining (a) a metallocene procatalyst, preferably one containing a bridging group possessing at least two bulky groups, and (b) a cation-generating cocatalyst. A process for activating a metallocene procatalyst is also provided which comprises combining the metallocene procatalyst with the components of a cation-generating cocatalyst.

Process For Producing Polyolefin Elastomer Employing A Metallocene Catalyst

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US Patent:
6060572, May 9, 2000
Filed:
Dec 15, 1997
Appl. No.:
8/990364
Inventors:
Daniel J. Gillis - West Haven CT
Richard Karpeles - Cheshire CT
Assignee:
Uniroyal Chemical Company, Inc. - Middlebury CT
International Classification:
C08F 3600
US Classification:
526335
Abstract:
A liquid phase polymerization process is provided for producing a polyolefin elastomer, e. g. , one derived from ethylene, another. alpha. -olefin such as propylene and, optionally, a diene, employing a metallocene catalyst. The process comprises contacting monomer under liquid phase polymerization conditions with a catalyst composition obtained by combining (a) a metallocene procatalyst, preferably one containing a bridging group possessing at least two bulky groups, and (b) a cocatalyst such as aluminoxane, preferably a cation-generating cocatalyst, in partial on total replacement of aluminoxane.

Process For Producing Polyolefin Elastomer Employing A Metallocene Catalyst

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US Patent:
6225426, May 1, 2001
Filed:
Apr 10, 1996
Appl. No.:
8/630650
Inventors:
Daniel J. Gillis - West Haven CT
Richard Karpeles - Cheshire CT
Assignee:
Uniroyal Chemical Company, Inc. - Middlebury CT
International Classification:
C08F 442
US Classification:
526160
Abstract:
A liquid phase polymerization process is provided for producing a polyolefin elastomer, e. g. , one derived from ethylene, another. alpha. -olefin such as propylene and optionally, a diene, employing a metallocene catalyst. The process comprises contacting monomer under liquid phase polymerization conditions with a catalyst composition obtained by combining (a) a metallocene procatalyst, preferably one containing a bridging group possessing at least two bulky groups, and (b) a cocatalyst such as aluminoxane, preferably a cation-generating cocatalyst, in partial or total replacement of aluminoxane.

Process For Producing Polyolefin Elastomer Employing A Metallocene Catalyst

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US Patent:
6136744, Oct 24, 2000
Filed:
Dec 15, 1997
Appl. No.:
8/990612
Inventors:
Daniel J. Gillis - West Haven CT
Richard Karpeles - Cheshire CT
Assignee:
Uniroyal Chemical Company, Inc. - Middlebury CT
International Classification:
B01J 3100
US Classification:
502118
Abstract:
A cation-generating cocatalyst is provided for activating a metallocene procatalyst. The cocatalyst comprises (1) a metal- and/or metalloid-containing first component, e. g. , an aluminum compound, (2) a neutral metal- and/or metalloid-containing second component, e. g. , a borane compound, and (3) an anionic metal- and/or metalloid-containing third component, e. g. , a metal containing borate.
Richard Karpeles from Nashua, NH, age ~68 Get Report