Vapor phase process for polymerizing carbon monoxide and olefins

Details Vapor phase process for polymerizing carbon monoxide and olefins Vapor phase process for polymerizing carbon monoxide and olefins

1987-05-26

1988-10-18

Anderson, Harold D.

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

Synthetic resins

Polymer of an ethylenically unsaturated reactant with a...

528220, C08G 6702

Patent

active

047788763

ABSTRACT:
Polymers of relatively high bulk density are produced at a satisfactory rate by polymerization carried out as a gas phase polymerization, in which the monomers are contacted with the catalyst composition in the substantial absence of a liquid non-polymerizable diluent. Comparison of polymerization in liquid phase and in gas phase polymerization shows that when for both polymerizations the temperature is lowered to achieve the same increase in molecular weight, the gas phase polymerization shows a considerably smaller loss of reaction rate and bulk density. It has further been found that when polymers of the same molecular weights are prepared in both gas phase and liquid phase polymerizations, the rate at which the polymers are produced is higher in the case of the gas phase polymerizations, and, in addition, the gas phase prepared polymers have higher bulk densities.

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