Initiation of polymerization by hydrogen atom donation
AssigneeE. I. DuPont de Nemours and Company
InventorsAlexei A. Gridnev, Steven Dale Ittel
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Abstract
This invention relates to the polymerization of vinylically-unsaturated monomers in the presence of a chain transfer catalysts where the polymerization process is initiated with hydrogen gas or a hydrogen atom donor rather than conventional free radical initiators. This invention further relates to an improved process for the polymerization of vinylically-unsaturated monomers in the presence of a chain transfer catalysts where the polymerization process is initiated with hydrogen gas.
Claims26
A process for polymerizing one or more vinylically-unsaturated monomers to form a polymeric product, comprising:
- contacting said vinylically-unsaturated monomers with a chain transfer catalyst and a hydrogen atom donor molecule in the absence of conventional free radical ihitiators, at a temperature from about room temperature to about 240° C., wherein said hydrogen atom donor is selected from dihydronaphthalene, silicon hydrides, tin hydrides, organometallic hydrides, benzylic alcohols, hydroquinones, alkyl ether hydroquinones, and benzhydrol.
A process for polymerizing one or more vinylically-unsaturated monomers by contacting said vinylically-unsaturated monomers with a chain transfer catalyst and hydrogen gas in the absence of conventional free radical initiators, said process carried out at a temperature from about room temperature to about 240° C.
Dependencies are inferred from the claim text.