Poly(monoperoxycarbonates)
AssigneeElf Atochem North America, Inc.
InventorsJose Sanchez, John Salvatore Yormick, Jerome Wicher, Kenneth George Malone
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Abstract
Poly(monoperoxycarbonates) of the structure: ##STR1## where R, R.sup.1 and n are defined in the summary of the invention such as 1,1,1-tris(t-butylperoxycarbonyloxymethyl)ethane, intermediates for their preparation as well as processes for their preparation and use are disclosed. The monoperoxycarbonate compounds are useful in initiating the polymerization of ethylenically unsaturated monomers, particularly styrene, curing of unsaturated polyester resins, and in modifying the molecular weight of polymers such as by crosslinking or controlled chain degradation.
Claims20
A novel poly(monoperoxycarbonate) of Structure A:
- ##STR47## where n is an integer from 3 to 8, R.sup.1 is selected from the group consisting of t-alkyl radicals of 4 to 12 carbons, 1,1,4-trimethyl-4(t-butylperoxy)pentyl radical, 1,1,4-trimethyl-4(t-amylperoxy)pentyl radical, t-cycloalkyl radicals of 6 to 10 carbons, t-aralkyl radicals of 9 to 13 carbons and 3-methyl-1-butyn-3-yl and 3-methyl-1-pentyn-3-yl, and with the proviso that when R.sup.1 is selected from 1,1,4-trimethyl-4(t-butylperoxy)pentyl radical and 1,1,4-trimethyl-4(t-amylperoxy)pentyl radical, n can also have a value of 2;
- when n is 2, R is a diradical selected from alkylene of 2 to 12 carbons, alkenylene of 4 to 8 carbons and diradical structures (n) and (o), ##STR48## where R.sup.9 is an alkylene diradical of 2 to 8 carbons;
- when n is 3, R is a triradical selected from 1,3,5-cyclohextriyl, R.sup.2 C(CH.sub.2 --).sub.3, --CHR.sup.2 CH(--)CH.sub.2 -- and structures (a), (b), (c), (d) and (e), ##STR49## where R.sup.2 is selected from hydrogen and an alkyl radical of 1 to 6 carbons, R.sup.3 is a triradical selected from the group consisting of R.sup.2 C(CH.sub.2 --).sub.3, --CHR.sup.2 CH(--)CH.sub.2 -- and structures (a) and (b), R.sup.4 and R.sup.5 are the same or different and are selected from hydrogen and alkyl radicals of 1 to 4 carbons, x, y and z are integers from 0 to 5 with the proviso that the sum of x, y and z is from 2 to 8, and r, s and t are integers from 0 to 6 with the proviso that the sum of r, s and t is from 3 to 18,
- and when n is 4 to 8, R is a polyradical selected from C(CH.sub.2 --).sub.4 and structures (f), (g), (h), (i), (j), (k) and (l), ##STR50## where R.sup.6 is a tetraradical selected from C(CH.sub.2 --).sub.4 and structure (f), R.sup.7 is a diradical selected from alkylene of 2 to 6 carbons and 1,2-, 1,3- and 1,4-phenylene, R.sup.8 is the sucrose-based octaradical of structure (m), ##STR51## p is an integer from 1 to 3, v is an integer from 0 to 5 with the proviso that the sum of v, x, y and z is from 3 to 10, and q is an integer from 0 to 4 with the proviso that the sum of q, r, s and t is from 2 to 16 and with the further proviso that when R is R.sup.3 C(CH.sub.2 --).sub.3, structure (b) or C(CH.sub.2 --).sub.4, R.sup.1 is t-butyl.
Dependencies are inferred from the claim text.