申请人:Ciba-Geigy Corporation
公开号:US04339567A1
公开(公告)日:1982-07-13
Substances (I) capable of being converted into higher-molecular weight materials under the influence of a cationic catalyst, such as 1,2-epoxides, aminoplasts, vinyl monomers or prepolymers, or phenoplasts, are so converted by exposure to actinic radiation in the presence of a sulphoxonium salt (II) of formula ##STR1## where P denotes zero or 1, R.sup.6 denotes an arylene or aralkylene group, R.sup.7 denotes --H or a group of formula ##STR2## R.sup.8 denotes an alkyl, alkenyl, cycloalkyl, cycloalkylalkyl, aryl, or aralkyl group, R.sup.9 has the same meaning as R.sup.8 but may alternatively represent a dialkylamino group or, if R.sup.8 represents an alkyl group, R.sup.9 may represent an arylamino group, R.sup.10 and R.sup.11 each independently have the same meaning as R.sup.8 but may also each denote --H, r represents 1, 2, or 3, Z.sup.r- denotes an r-valent anion of a protic acid, and q denotes zero when p denotes zero, or zero or 1 when p denotes 1. Typical II are dimethylphenylsulphoxonium hexafluorophosphate and perchlorate, dimethylphenacylsulphoxonium hexafluorophosphate, and chloride, dodecylmethylbenzylsulphoxonium hexafluorophosphate, and 1,4-bis(1-oxo-2-(dimethylsulphoxonium)ethyl)benzene dihexafluoroarsenate. When I is a polyepoxide or a resol, it may be photopolymerized by means of II and subsequently crosslinked by heating with a latent heat-curing agent.
(I) 能够在正离子催化剂的影响下转化为高分子量材料的物质,例如1,2-环氧化物、氨基塑料、乙烯单体或预聚物或酚醛,通过在存在硫代氧盐(II)的情况下暴露于光辐射下进行转化,其中硫代氧盐(II)的公式为##STR1##其中P表示零或1,R.sup.6表示芳基或芳基烷基基团,R.sup.7表示-H或公式##STR2##的基团,R.sup.8表示烷基,烯基,环烷基,环烷基烷基,芳基或芳基烷基基团,R.sup.9与R.sup.8具有相同的含义,但也可以代表二烷基氨基基团或者如果R.sup.8代表烷基基团,R.sup.9可以代表芳基氨基基团,R.sup.10和R.sup.11分别独立地具有与R.sup.8相同的含义,但也可以分别代表-H,r代表1,2或3,Z.sup.r-代表质子酸的r价阴离子,q在p为零时为零,在p为1时为零或1。典型的II是二甲基苯基硫代氧盐六氟磷酸盐和高氯酸盐,二甲基苯乙酰硫代氧盐六氟磷酸盐和氯化物,十二烷基苯甲基硫代氧盐六氟磷酸盐和1,4-双(1-氧代-2-(二甲基硫代氧盐)乙基)苯二六氟砷酸盐。当I是聚环氧化物或树脂时,可以通过II进行光聚合,然后通过加热与潜在的热固化剂交联。