Polyolefin catalyst and method for its preparation

Details Polyolefin catalyst and method for its preparation Polyolefin catalyst and method for its preparation

1976-03-04

1977-10-11

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252465, 252468, 252469, 526 90, 526 96, B01J 2104, B01J 2108, B01J 2326

Patent

active

040534375

ABSTRACT:
A new catalyst and a method of polymerizing olefins in which the catalyst is prepared by forming a mixture by dispersing on a finely divided, difficult to reduce, inorganic support of the class consisting of silica, alumina, thoria, zirconia, titania, magnesia and mixtures or composites thereof, an organic chromium compound pyrolytically decomposable in the substantial absence of oxygen to deposit a catalytically active residue along with a carbon residue as a contaminant on the support, then activating the mixture by subjecting the mixture to non-oxidative pyrolysis to and at a temperature within the range of about 600-2000.degree. F., thereby depositing on the support the chromium-bearing residue and carbon residue as a by-product from the pyrolytic decomposition of the organic chromium compound, and subjecting the activated catalyst after this activating to heat and an oxidizing gas such as air, oxygen, carbon dioxide, nitrous oxide, and the like, to burn off a substantial amount of the carbon residue and to modify and improve the characteristics of the activated catalyst.

REFERENCES:
patent: 2846425 (1958-08-01), Hogan et al.
patent: 2951816 (1960-09-01), Hogan et al.
patent: 3349067 (1967-10-01), Hill
patent: 3541072 (1970-11-01), Witt et al.

Affiliated with

Also associated with

Rating

Polyolefin catalyst and method for its preparation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polyolefin catalyst and method for its preparation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyolefin catalyst and method for its preparation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-738434