| 摘要 |
<p>Case 3-12953/ARL 300/1+2 Photopolymerisation by Means of Sulfoxonium Salts Substances (I) capable of being converted into highermolecular weight materials under the influence of a cationic catalyst, such as 1,2-epoxides, aminoplasts, vinyl monomers and prepolymers, or phenoplasts, are so converted by exposure to actinic radiation in the presence of an aryl- or aroylcarbamoylsulfoxonium salt (II) of formula where p is zero or 1, q is 1 to 4, Ar denotes an aromatic group, R6 denotes -H or a group -COR9 or -CONH(CO)rR10, R7 denotes an alkyl, alkenyl, cycloalkyl, cycloalkylalkyl, aryl, or aralkyl group, R8 has the same meaning as R7 but may alternatively represent a dialkylamino group or, if R7 denotes alkyl, it may alternatively represent an arylamino group, R9 and R10 each denote a saturated or ethylenically unsaturated radical, r is zero or 1, t is 1, 2, or 3,.and zt- denotes a t-valent anion of a protic acid. Typical salts (II) are acetanilinodimethylsufoxonium hexafluorophosphate, benzoylcarbamoyldimethylsulfoxonium hexafluorophosphate, 3,4-tichloracetanilinodimethylsulfoxonium hexafluoroarsenate, 2,4-bis(dimethylsul toluene dihexafluorophospha$e, 4-methylacetanilinodimethylsulfoxonium chloride, and tris(acetanilinodimethylsulfoxonium) orthophosphate. When I is a polyepoxide or a resol, it may be photopolymerised by means of II and subsequently crosslinked by heating with a latent heat-curing agent.</p> |
