Abstract A new class of compounds: R-W-R'' where R and R'' are identical oxy radicals containing peroxide functions such as dialkyl or diaralkyl peroxide, peroxyketal, peroxyester, or monoperoxycarbonate, and W is a carbonyl group, or carbonyl containing group, or an alkylidene or aralkylidene group, or a phosphorus containing group. Examples: Di(1,3-dimethyl-3-(t-butylperoxy)butyl)carbonate; Di(1,3-dimethyl-3-(n-butoxycarbonylperoxy)butyl)carbonate; 2,2-Bis(3,3-di(t-butylperoxy)butoxy)propane; Di(1,3-dimethyl-3-(t-butylperoxy)butyl)ethyl phosphate. They are free radical affording compounds useful in crosslinking of polyolefins and unsaturated polymers, and for the polymerization of vinyl monomers and diolefinic monomers.
IN THE PROCESS OF CROSSLINKING UNSATURATED POLYESTER COMPOSITION USING AS THE CROSSLINKING AGENT A FREE RADICAL AFFORDING COMPOUND, THE IMPROVEMENT WHICH COMPRISES USING AS SAID AGENT A PEROXIDE OF THE FORMULA R-W-R'' WHERE: A. W IS SELECTED FROM -C(=O)-. -C(=O) C(=O)-, -C(=O)C(=O)-,
Claim 2
Dependent Claim
42 words
IN THE PROCESS OF CROSSLINKING UNSATURATED POLYESTER COMPOSITION USING AS THE CROSSLINKING AGENT A FREE RADICAL AFFORDING COMPOUND, THE IMPROVEMENT WHICH COMPRISES USING AS SAID AGENT A PEROXIDE OF THE FORMULA R-W-R'' WHERE: A. W IS SELECTED FROM -C(=O)-. -C(=O) C(=O)-, -C(=O)C(=O)-,
Claim 3
Dependent Claim
11 words
A process as in claim 1 wherein said peroxide is di(2-(t-butylperoxycarbonyl)ethyl)carbonate.
Claim 4
Dependent Claim
22 words
A process as in claim 2 wherein said polyester is a mixture of an unsaturated maleic anhydride-phthalic anhydride-propylene glycol polyester and styrene.