Method of production of polyolefins

Details Method of production of polyolefins Method of production of polyolefins

1988-03-22

1991-01-01

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502126, 526124, 526128, 526141, 526351, 5263486, 526901, C08F 4654, C08F 1000

Patent

active

049819305

ABSTRACT:
A method of producing a polyolefin. An olefin is polymerized in the presence of a catalyst containing (A) a catalyst component containing magnesium, titanium, halogen and an electron donor, (B) an organoaluminum compound and (C) an external electron donor which is an ether compound (C.sup.1) of the formula [1a]: ##STR1## or formula [1b]: ##STR2## wherein R.sup.1, R.sup.2, R.sup.4 and R.sup.7 are saturated or unsaturated aliphatic hydrocarbyl group having 1 to 7 carbon atoms; R.sup.3 and R.sup.6 are a hydrogen atom or a saturated or unsaturated aliphatic hydrocarbyl group having 1 to 7 carbons and R.sup.5 is a divalent aliphatic hydrocarbyl group having 1 to 7 carbon atoms. The catalyst used in the polymerization may also contain a carboxylate, organosilicon compound and/or an azo compound.

REFERENCES:
patent: 4613579 (1986-09-01), Furuhashi et al.
patent: 4701505 (1987-10-01), Fujii et al.
patent: 4716206 (1987-12-01), Fujita et al.
patent: 4724255 (1988-02-01), Lofgren et al.

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