| 摘要 |
<p>1. Photocrosslinkable compositions comprising (a) an unsaturated photocrosslinkable material that contains either a group of the formula I Ar-CH=CR-CO- attached through the indicated carbonyl group to a carbon atom, or a group of the formula II see diagramm : EP0127574,P7,F2 wherein Ar represents a mono-, di- or trivalent aromatic carbocyclic or heterocyclic group, and R represents a hydrogen atom, an alkyl group of 1 to 4 carbon atoms, or a group which, together with the attached carbon atom and the indicated carbonyl group, forms a 5-, 6-, or 7-membered carbocyclic or heterocyclic ring, and (b) an effective amount of an organic electron acceptor which is of the formula III or IV see diagramm : EP0127574,P7,F3 or see diagramm : EP0127574,P7,F1 wherein Ar**1 represents a (2m+n)-valent carbocyclic aromatic group, which may be substituted by 1 to 4 alkyl groups of 1 to 4 carbon atoms, halogen atoms and/or nitro groups, n denotes zero or 1 to 4, m represents zero, 1 or 2 such that when m is 2, n represents zero, when m is 1, n represents 1 or 2, and when m is zero, n represents 2, 3, or 4, the indicated anhydride carbonyl groups being attached to vicinal carbon atoms of an aromatic ring, and p denotes zero, 2 or 4, such that the sum of (n+p) is 4.</p> |
