Polymerization process and products therefrom

Details Polymerization process and products therefrom Polymerization process and products therefrom

1980-03-25

1983-01-11

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252430, 526352, 526903, C08F 424, C08F 1002

Patent

active

043683029

ABSTRACT:
A process and catalyst for polymerizing 1-olefins, for example ethylene, the process comprising (a) supporting a chromium compound on a refractory oxide support material, (b) adding one or more tetravalent titanium compounds, (c) heating the product under such conditions that an active polymerization catalyst is formed, (d) and contacting the monomer with the active polymerization catalyst in the presence of (6) one or more organometallic compounds having wherein the metal is of groups 1A, 2A, 2B and 3A of the Periodic Table (Mendeleef), and (7) a polyene modifier. The refractory oxide support material is preferably silica and the titanium compound is preferably a tetraalkyl titanate. The organometallic compound can be, for example, a triakyl aluminium and the polyene can be for example a conjugated or unconjugated diene.

REFERENCES:
patent: 2824089 (1958-02-01), Retern et al.
patent: 3102876 (1963-09-01), Hogan
patent: 3158594 (1964-11-01), Weil et al.
patent: 3780011 (1973-12-01), Pullukat et al.
patent: 3891611 (1975-06-01), Abe et al.
patent: 3970613 (1976-07-01), Goldie et al.
patent: 4105844 (1978-08-01), McDaniel
patent: 4252927 (1981-02-01), Eve
patent: 4252928 (1981-02-01), Eve
Yamaguchi et al., Chemical Abstract, vol. 84, 31763g, (1976).

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