Unsaturated polyester resins containing additional accelerators

Abstract

Polyester moulding and coating compositions based on polyester resins of: A. from 20 to 90% by weight based on the sum of components (A) and (B), of .alpha.,.beta.-ethylenically unsaturated polyesters, and B. from 80 to 10% by weight based on the sum of components (A) and (B) of polymerizable compounds, these polyester compositions containing, in addition to possible further additives, C. from 0.1 to 8.0% by weight based on the sum of components (A) and (B) of polymerization initiators, D. from 0.001 to 0.1% by weight based on the sum of components (A) and (B) of polymerization inhibitors, E. from 0.001 to 0.5% by weight, based on the sum of components (A) and (B), of conventional accelerators, F. from 0.05 to 5.0% by weight based on the sum of components (A) and (B) of additional accelerators, and optionally, G. from 0.01 to 1.0% by weight based on the sum of components (A) and (B) of paraffin or wax-like substances, wherein the additional accelerators (F) are compounds corresponding to the following general formula: ##STR1## wherein X represents O, S, or preferably NR.sup.2, R.sup.1 represents an aliphatic radical having from 1 to 8 carbon atoms, hydroxyl, --NR.sup.4 R.sup.5, cyclohexyl, cyclopentyl, alkoxy having from 1 to 4 carbon atoms or --COOR.sup.3, R.sup.2 represents an aliphatic radical having from 1 to 8 carbon atoms, a cycloaliphatic radical having from 5 to 8 carbon atoms, acetyl, benzoyl, benzyl, R.sup.3 represents a hydrogen atom or an aliphatic radical having from 1 to 8 carbon atoms, or an aromatic radical, such as the phenyl radical or an aliphatically-substituted phenyl radical, the aliphatic radical containing from 1 to 4 carbon atoms, R.sup.4 and R.sup.5 each represent a hydrogen atom, an aliphatic radical having from 1 to 4 carbon atoms, phenyl, cyclohexyl, or R.sup.4 and R.sup.5 together represent a cycloaliphatic radical having from 4 to 8 carbon atoms.

Dependencies are inferred from the claim text.