Use of alkylaluminum compounds and hydroxyl-containing compounds

Details Use of alkylaluminum compounds and hydroxyl-containing compounds Use of alkylaluminum compounds and hydroxyl-containing compounds

1983-06-30

1986-01-14

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 77, 526105, 526100, 526901, 526912, C08F 234, C08F 1002

Patent

active

045646600

ABSTRACT:
A method for smoothly and reliably initiating polymerization of ethylene with a supported chromium oxide catalyst, with smaller amounts of catalyst and in substantially shorter periods of time then heretofore required, by adding an alkylaluminum compound and a hydroxyl-containing compound to the reactor of a polymerization reaction system prior to the commencement of polymerization and subjecting said alkylaluminum compound and hydroxyl-containing compound to suitable conditions of temperature and pressure for a time sufficient for said alkylaluminum compound to react completely with the moisture present in said reactor and said hydroxyl-containing compound.

REFERENCES:
patent: 2970135 (1961-01-01), Lanning et al.
patent: 3050514 (1962-08-01), Cawthon et al.
patent: 4376191 (1983-03-01), Geck

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