Back to results
US 4,065,609 AGranted
Polymerization process
AssigneeImperial Chemical Industries PLC
InventorBruce Albert Edward Willmore
Life of this patent
Estimating the term…
Abstract
Polymerization of a mono-.alpha.-olefine monomer is effected by contacting the gaseous monomer with a solid phase comprising polymer and catalyst at a pressure and temperature which are such that the temperature is in the range from tp + 0.1.degree. C up to tp + 5.0.degree. C, where tp is the temperature at which the monomer condenses at a pressure which is equal to the monomer partial pressure within the polymerization vessel.
Claims11
A process for the production of a solid polymer which comprises:
- contacting at least one gaseous mono-.alpha.-olefine monomer with a solid polymer of said monomer or monomers, in the presence of a transition metal catalyst,
- stirring the solid polymer to effect agitation, and
- maintaining the conditions of temperature and pressure of the reaction to be such that the reaction temperature is in the range from (t.sub.P + 0.1).degree. C up to (t.sub.P + 5.0).degree. C, and the partial pressure of one of said monomers is P psig, wherein P psig is the saturated vapour pressure of said monomer at a temperature of t.sub.P .degree. C.
Dependencies are inferred from the claim text.