COMPOSITIONS OF THE INITIATOR OF FREE RADICAL POLYMERIZATION CONTAINING THERE-BUTYL HYDROPEROXIDE AND THEIR APPLICATION

摘要

1. An epoxy composition comprising: (a) an epoxy resin; and (b) a free radical polymerization initiator composition comprising a tert-butyl hydroperoxide solution that contains no more than 7 weight. % water. 2. The epoxy composition according to claim 1, wherein the free radical polymerization initiator composition further comprises cumene hydroperoxide. The epoxy composition according to claim 2, wherein the weight ratio of tert-butyl hydroperoxide to cumene hydroperoxide is from 20 to 1 to 1 to 20.4. The epoxy composition according to any one of paragraphs. 1-3, where the amount of the composition of the initiator of free radical polymerization is from 10 to 30 parts by weight, preferably from 15 to 25 parts by weight, based on 100 parts by weight the whole composition. 5. Binder for foundry masses containing (a) 20-70 parts by weight epoxy resin; (b) optionally 0-50 parts by weight acrylate; (c) optionally 0-30 parts by weight fatty acid alkyl ester, wherein the ester alkyl group is an aliphatic hydrocarbon containing up to 8 carbon atoms, preferably 4 to 8 carbon atoms, and most preferably is butyltallate; and (d) a free radical polymerization initiator composition comprising a tert-butyl hydroperoxide solution that contains no more than 7 weight. % water, where the amount of the composition of the initiator of free radical polymerization is from 10 to 30 parts by weight based on 100 parts by weight total binder. 6. A binder for foundry masses according to claim 5, wherein the binder, namely, the composition of the free radical polymerization initiator, further comprises cumene hydroperoxide. The binder for foundry masses according to claim 6, where the weight ratio of tert-butyl hydroperoxide to cumene hydroperoxide is