T-Alkyl peresters of t-hydroperoxides catalysts for polymerization of unsaturated monomers
AssigneeArgus Chemical Corporation
InventorsRonald L. Friedman, Roger N. Lewis
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Abstract
Novel tertiary alkyl peresters of tertiary hydroperoxides are used as polymerization initiators wherein the peresters are characterized by the tertiary alkyl group of the acid moiety having at least two alkyl groups of two or more carbon atoms and the tertiary alkyl group of the hydroperoxide has at least five carbon atoms. Typical is the polymerization of certain vinyl monomers such as vinyl chloride.
Claims5
In the polymerization of a monomer mass containing a monomer selected from the group consisting of styrene, vinyl chloride, vinyl acetate and ethylene, the improvement in which the polymerization of said monomer mass is initiated with t-alkyl perester of t-hydroperoxide comprising an initiating amount of at least one perester of the formula:
- ##STR3## wherein R.sub.3, R.sub.4 and R.sub.5 are the same or different alkyl groups of from 1 to 10 carbon atoms provided not more than one of R.sub.3, R.sub.4 and R.sub.5 is methyl, and R.sub.3, R.sub.4 and R.sub.5 together with the associated tertiary carbon atom and carbonyl group form a neodecanoate group;
- and R is straight chain alkyl of 2-5 carbon atoms.
Dependencies are inferred from the claim text.