Chrome catalyst

Details Chrome catalyst Chrome catalyst

1975-01-20

1977-02-15

Holler, Alan

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526144, 526348, 526351, 526352, C08F 478, C08F 1002, C08F 1006

Patent

active

040083594

ABSTRACT:
This invention comprises the novel composition formed by mixing (A) a chromium tris-diorgano-orthophosphate of the general formula Cr[OP(O) (OR).sub.2 ].sub.3 wherein R can be an alkyl, alkoxyalkyl or cycloalkyl group of one to about eight carbon atoms and the chlorinated and brominated derivatives thereof, (B) an alkyl aluminum compound of the general formula R'.sub.2 R"Al in which each R' and R" can be an alkyl group of 1 to 6 carbon atoms and each R" can also be a hydrogen atom, and (C) a halogenated olefin of four to about eight carbon atoms containing at least four halogen atoms at least two of which are attached to doubly bonded carbon atoms.
This invention also comprises the use of this novel combination as a catalyst for the polymerization of ethylene alone or with propylene and other olefins. This invention also comprises the polymer products prepared by said method.

REFERENCES:
patent: 3474080 (1969-10-01), Rekers
patent: 3704287 (1972-11-01), Johnson
patent: 3847957 (1974-11-01), Boone
patent: 3901825 (1975-08-01), Meyer et al.
patent: 3929745 (1975-12-01), Huerta et al.

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