Propylene polymer compositions

Details Propylene polymer compositions Propylene polymer compositions

2005-08-16

2005-08-16

Lipman, Bernard (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S240000

Reexamination Certificate

active

06930152

ABSTRACT:
A propylene polymer composition is prepared by mixing propylene homo- or co-polymer (A) obtained using a transition metal catalyst compound (h), defined herein, with a co-catalyst, e.g., organoaluminum oxy compound, with an olefin elastomer (D) and another olefin polymer (E), e.g., polyethylene. Alternatively, the combination of propylene polymer (A), olefin elastomer (D) and olefin polymer (E) is prepared by a multi-stage polymerization method. In both cases, the propylene homo- or co-polymer (A) may include a second propylene homo- or co-polymer (A′) wherein the ratio of intrinsic viscosities of propylene polymers (A) and (A′) is in the range of 3 to 30. These propylene polymer compositions are excellent in heat resistance, mechanical strength, tensile elongation at break, etc., and can be used in the fabrication of structural materials, films and sheets.

REFERENCES:
patent: 3700614 (1972-10-01), Schenkerberg
patent: 4634735 (1987-01-01), Thiersault et al.
patent: 4975403 (1990-12-01), Ewen
patent: 5216095 (1993-06-01), Dolle et al.
patent: 5218052 (1993-06-01), Cohen et al.
patent: 5280952 (1994-01-01), Hirabayashi et al.
patent: 5395810 (1995-03-01), Shamshoum et al.
patent: 2099214 (1993-12-01), None
patent: 4130429 (1993-03-01), None
patent: 0294770 (1988-12-01), None
patent: 0433990 (1991-06-01), None
patent: 0466926 (1992-01-01), None
patent: 0485822 (1992-05-01), None
patent: 0518125 (1992-05-01), None
patent: 0490353 (1992-06-01), None
patent: 0499216 (1992-08-01), None
patent: 0515898 (1992-12-01), None
patent: 0516018 (1992-12-01), None
patent: 0538749 (1993-04-01), None
patent: 0550214 (1993-07-01), None
patent: 0552681 (1993-07-01), None
patent: 0563818 (1993-10-01), None
patent: 0588208 (1994-03-01), None
patent: 172507 (1984-09-01), None
patent: 92/14784 (1992-09-01), None
Fink, G., et al.: “Ziegler Catalysts: Recent Scientific Innovations and Technological Improvements”; pp. 36-45; (1995).
Fink, G., et al.: Ziegler Catalysts: Recent Scientific Innovations and Technological Improvements; pp. 377-and 384; (1995).
Lee et al., “The Glass Transition Temperatures of Polymers”, Polymer Handbook, 2nded., Brandrup et al ed., John Wiley & Sons, New York, pp. 139-142 (1975).
Standard Test Method for Glass Transition Temperatures by Differential Scanning Calorimetry or Differential Thermal Analysis, ASTM E 1356-91, American Society for Testing & Materials.

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