Di(2-methyl-2-phenyl propyl) peroxy dicarbonate and other novel (2-alkyl-2-phenyl) substituted peroxy dicarbonates
AssigneeArgus Chemical Corporation
InventorsReidar Halle, David Peterson
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Abstract
Novel peroxydicarbonates are provided in which the alkyl carbonate moiety is 2-alkyl-2-phenyl substituted. The compounds are useful as polymerization initiators of ethylenically unsaturated monomers, such as vinyl chloride, and as catalysts of unsaturated polyester resins. The subject peroxydicarbonates are characterized in that they are solid at room temperature, have ambient temperature stability in spite of a low 10 hour half-life temperature, and can normally be transported and stored without refrigeration.
Claims12
In the polymerization of a monomer mass containing a monomer selected from ethylene, styrene, methylmethacrylate and vinyl chloride by subjecting said mass to polymerization conditions in the presence of an initiating amount of an organic peoxide, the improvement in which said organic peroxide includes a peroxydicarbonate of the formula:
- ##STR4## wherein:
- each of R and R.sub.1 is lower alkyl of from 1 to 4 carbon atoms;
- n is 0 to 3;
- and
- X is selected from the group consisting of lower alkyl of from 1 to 4 carbon atoms, halogen, and lower alkoxy of from 1 to 4 carbon atoms.
In a process for curing a mixture of an unsaturated polyester resin of a polybasic or polyhydric compound or its anhydride and a peroxide cross-linkable monomeric compound by heating said mixture at a curing temperature in the presence of an effective amount of a curing catalyst, the improvement in which the curing catalyst is a peroxydicarbonate of the formula:
- ##STR5## Wherein:
- Each of R and R.sub.1 is lower alkyl of from 1 to 4 carbon atoms;
- N is O to 3;
- and X is selected from the group consisting of lower alkyl of from 1 to 4 carbon atoms, halogen, and lower alkoxy of from 1 to 4 carbon atoms.
Dependencies are inferred from the claim text.