Process and catalyst for polyolefin density and molecular weight

Details Process and catalyst for polyolefin density and molecular weight Process and catalyst for polyolefin density and molecular weight

1991-08-30

1994-06-28

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502103, 502117, 526127, 526150, 526129, 526156, 526348, 526352, 526904, C08F 4602, C08F 1000

Patent

active

053248007

ABSTRACT:
Catalysts comprising (a) derivatives of mono, bi and tricyclopentadienyl coordination complexes with a transition metal and (b) and an alumoxane are employed in a process of producing polyolefins of controlled molecular weight.

REFERENCES:
patent: 3104249 (1963-09-01), Claus et al.
patent: 3161629 (1964-12-01), Gorsich
patent: 4404344 (1983-09-01), Sinn et al.
patent: 4542199 (1985-09-01), Kaminsky et al.
Sinn et al., Advances in Organometallic Chemistry, vol. 18, (1980), pp. 99-148.
Karapinka et al., Journal of Polymer Science, 55, 145-155 (1962).
Braun et al., Die Makromolekulare Chemie, 148, 119-120 (1971).
Boor, Ziegler-Natta Catalysta and Polymerizations, Academic Press, 1979, p. 116, New York, N.Y.
Jens Herwig, Walter Kaminsky; "Halogen-Free Soluble Ziegler Catalysts with Methylalumoxan as Catalyst," Polymer Bulletin 9, (1983) pp. 464-469.
Jens Herwig, "Olefinpolymerisation mit loslichen, insbesondere halogenfreien Zieglerkatalysatoren unter Verwendung von oligomerem Methylalumoxan als Aluminiumalkylkomponente," (Dec. 7 1979) pp. 64-49, 100-101.

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