Olefin polymerization using chromium on fluorided aluminophospha

Details Olefin polymerization using chromium on fluorided aluminophospha Olefin polymerization using chromium on fluorided aluminophospha

1984-12-24

1986-06-24

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502150, 502210, 5263485, 526352, C08F 422, C08F 1002

Patent

active

045968624

ABSTRACT:
Ethylene polymer is particularly suitable for the production of tough film is produced under slurry conditions using a fluorided aluminophosphate support and a reaction temperature within the range of 93.degree. to 107.degree. C. in the presence of hydrogen and a small amount of trialkyl boron cocatalyst wherein said aluminophosphate has a phosphorous to aluminum ratio within the very narrow range of 0.15 to 0.4 and wherein said aluminophosphate carrying chromium catalyst is being activated at a temperature within the range of 482.degree. to 704.degree. C. The resulting film is not only substantially superior to film made from the best of the readily available commercial resins but is also better than film made from polymers using a similar catalyst system without the specific combination of parameters of this invention.

REFERENCES:
patent: 2951816 (1960-09-01), Hogan et al.
patent: 4011382 (1977-03-01), Levine et al.
patent: 4077904 (1978-03-01), Noshay et al.
patent: 4347162 (1982-08-01), Invernizzi et al.
patent: 4364842 (1982-12-01), McDaniel et al.
patent: 4364855 (1982-12-01), McDaniel et al.
patent: 4481301 (1984-11-01), Nowlin et al.

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