Novel peroxyketals derived from alkoxyacetones
AssigneeAkzona Incorporated
InventorsWilhelmus M. Beyleveld, Lodewijk Roskott
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Abstract
Novel peroxyketals having the general formula ##STR1## are provided, wherein R.sup.1 represents a tert. alkyl group having 4-12 carbon atoms and R.sup.2 represents a branched or a non-branched alkyl group having 1-12 carbon atoms or a substituted or unsubstituted cycloalkyl group having 5-12 carbon atoms. The peroxyketals can be used to advantage for initiating the copolymerization reaction of ethylenically unsaturated compounds such as unsaturated polyester resins containing both an unsaturated polyester and an ethylenically unsaturated monomer such as styrene.
Claims7
In a process for polymerizing an ethylenically unsaturated monomer and an ethylenically unsaturated polyester, the method comprising initiating the polymerization with a peroxyketal having the formula ##STR5## wherein R.sup.1 represents a tertiary alkyl group having 4-12 carbon atoms and R.sup.2 a branched or non-branched alkyl group having 1-12 carbon atoms or a substituted or unsubstituted cycloalkyl group having 5-12 carbon atoms.
A moulding composition comprising an ethylenically unsaturated monomer, an ethylenically unsaturated polyester, and a curing effective amount of a peroxyketal of the formula ##STR6## wherein R.sup.1 represents a tertiary alkyl group having 4-12 carbon atoms and R.sup.2 a branched or non-branched alkyl group having 1-12 carbon atoms or a substituted or unsubstituted cycloalkyl group having 5-12 carbon atoms.
Dependencies are inferred from the claim text.