Cyclic silyl peroxides
AssigneeArgus Chemical Corporation
InventorsReidar Halle, Lawrence A. Bock
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Abstract
Novel cyclic silylperoxides in which a silicon atom directly bonded to at least two peroxy oxygen atoms in a ring of from 8 to 11 atoms are useful as agents for crosslinking high density polyethylene and/or as catalysts for curing unsaturated polyester resins.
Claims21
A cyclic silyl peroxide having the formula ##STR5## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are selected from the group consisting of lower alkyl having from 1 to 3 carbon atoms;
- R.sub.5 and R.sub.6 are each selected from the group consisting of alkyl, alkenyl and aryl;
- and
- n is an integer from 1 to 4.
3-vinyl-3,6,6,9,9-pentamethyl-1,2,4,5-tetraoxa-3-silacyclononane.
3,3-diethyl-6,6,9,9-tetramethyl-1,2,4,5-tetraoxa-3-silacyclononane.
3-n-amyl-3,6,6,9,9-pentamethyl-1,2,4,5-tetraoxa-3-silacyclononane.
A process for preparing cyclic silyl peroxides comprising reacting a dihydroperoxide and a dimethylaminosilane having the formula:
- R.sub.5 R.sub.6 Si[N(CH.sub.3).sub.2 ].sub.2 wherein R.sub.5 and R.sub.6 are each selected from the group consisting of alkyl, alkenyl and aryl.
Dependencies are inferred from the claim text.