LYSHERDBARE POLYESTERHOLDIGE MASSER FOR FORMINGS- ELLER OVERTREKKSFORMAAL, OG ANVENDELSE AV DEM

摘要

1. A photocurable molding, impregnating and coating composition comprising a mixture of a) at least one ethylenically unsaturated copolymerizable polyester, b) at least one ethylenically unsaturated copolymerizable monomeric compound, c) an inhibitor and d) 0,005 to 5 % by weight, based on a+b, of a UV sensitizer, with or without e) paraffins, thermally decomposable initiators, fillers, reinforcing agents, lubricants, inert solvents, shrinkagereducing additives and/or other assistants usable in unsaturated polyesters, characterized in that the UV sensitizer consists of one or more acylphosphine oxide compounds of the formula see diagramm : EP0007086,P22,F1 where R**1 is straight-chain or branched alkyl of 1 to 6 carbon atoms, cyclohexyl, cyclopentyl, aryl which is unsubstituted or substituted by halogen, alkyl or alkoxy, or a S-containing or N-containing five-membered or six-membered heterocyclic radical, R**2 has one of the meanings to R**1 (but R**1 and R**2 may be identical or different), or is alkoxy of 1 to 6 carbon atoms, aryloxy or aralkoxy, or R**1 and R**2 together with the phosphorus atom form a ring, and R**3 is straight-chain or branched alkyl of 2 to 18 carbon atoms, a cycloaliphatic radical of 3 to 10 carbon atoms, phenyl, naphthyl or a S-, O- or N-containing five-membered or six-membered heterocyclic radical, and may contain additional substituents, or is the group see diagramm : EP0007086,P23,F2 where R**1 and R**2 have the above meanings and X is phenylene or an aliphatic or cycloaliphatic divalent radical of 2 to 6 carbon atoms, and one or more of the radicals R**1 to R**3 may be olefinically unsaturated.