| 摘要 |
Organic peroxydicarbonates represented by the following graphic formula are described. <IMAGE> In the formula, R1, R2, R3 and R4 are each independently selected from an alkyl group containing from 1 to 4 carbon atoms. R1 and R2 and/or R3 and R4 can participate in a cycloalkyl group having from 3 to 6 carbon atoms. The peroxydicarbonates are useful as initiators for the polymerization or copolymerization of ethylenically unsaturated monomers or the cross-linking of unsaturated polyester resins. The organic peroxydicarbonates can be used in combination with commercially available peroxydicarbonates, particularly those having a longer half-life, or with peresters, diacylperoxides and azo compounds.
|
