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Crosslinkable bimodal polyolefin compositions

Patent 5852116 Issued on December 22, 1998. Estimated Expiration Date: Icon_subject August 26, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3280220

3645992

3646155

3914342

Impregnated polymerization catalyst, process for preparing, and use for ethylene copolymerization
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Issued on: 11/24/1981
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Thermoplastic compositions and automotive carpeting backed therewith
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Patent #: 4403007
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Inventor: Coughlin

Ethylene/alpha-olefin copolymer composition
Patent #: 4429079
Issued on: 01/31/1984
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Low density copolymer composition of two ethylene-଱-olefin copolymers
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Inventor: Fukushima ,   et al.

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Inventors

Application

No. 703263 filed on 08/26/1996

US Classes:

525/72, Mixture contains solid polymer derived from reactants containing an atom other than C, H, O, N, or chlorine525/193Agent contains an ethylenic group

Examiners

Primary: Wilson, Neill R.

Foreign Patent References

  • 584927 EP 03/23/1994
  • 7-207054 JP 08/23/1995
  • 8262 WO. 06/23/1991
  • WO 91/08262 WO 06/23/1991
  • 13143 WO. 07/23/1993
  • WO 93/13143 WO 07/23/1993
  • 94/06858 WO 03/23/1994
  • 94/17112 WO 08/23/1994
  • 95/29197 WO 11/23/1995
  • 96/12762 WO 05/23/1996
  • 97/33921 WO 09/23/1997

International Classes

C08L 023/26
C08L 051/06

Abstract

Crosslinkable polyolefin compositions, articles prepared from such compositions, and processes for making such compositions are described that possess both good processability and fast cure rates. The crosslinkable polyolefin compositions are bidisperse blends of ethylene polymers of the same polymer family having differing number average molecular weights as obtained by deconvolution in which Mn1 /Mn2 >7, Mn2 >3000 and 0.7ࣙ(A1 /(A1 +A2))ࣙ0.15 wherein Mn1 represents the number average molecular weight of the first deconvoluted component, Mn2 represents the number average molecular weight of the second deconvoluted component, and A1 and A2 are the relative proportions of the first and second components. These crosslinkable polyolefin compositions are useful for the manufacture of various articles, such as wire and cable coatings, weather-stripping and seals, gaskets, articles made from foamed and/or sponge-like crosslinked polyolefin or either closed or open cell structure and/or combinations thereof, hollow containers, hollow tanks, medical appliances, drapes and coverings, items of health and personal care, fibers, tapes, tubes, pipes and hoses, bellows, boots, gaiters, footwear, etc.

Other References

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