Polymerizable compositions comprise (a) a compound containing in the same molecule both at least one 1,2-epoxide group and at least two groups chosen from allyl, methallyl, and 1-propenyl groups, e.g., 2,2-bis(3-allyl-4-(glycidyloxy)phenyl)propane or bis(3-(1-propenyl)-4-(glycidyloxy)phenyl)methane, and (b) a compound containing at least two mercaptan groups per molecule, e.g., pentaerythritol tetrathioglycollate. The compositions are caused to polymerize by the action of irradiation or free-radical catalysts. They may, if desired, also contain a heat-curing crosslinking agent for epoxide resins; the epoxide-containing polymers so obtained can be subsequently crosslinked in situ. The compositions are useful in various two-stage operations, such as the production of multilayer printed circuits.
聚合物组合物包括(a)一种化合物,其分子中同时含有至少一个1,2-环氧基团和至少两个选自烯丙基,甲基烯丙基和
1-丙烯基基团的基团,例如2,2-双(3-烯丙基-4-(环氧基氧基)苯基)
丙烷或双(3-(
1-丙烯基)-4-(环氧基氧基)苯基)
甲烷,和(b)一种每个分子中含有至少两个巯基基团的化合物,例如对
硫代
乙二醇四
羧酸四酯。通过辐射或自由基催化剂的作用,使组合物聚合。如果需要,它们还可以含有环氧
树脂的热固性
交联剂;因此获得的含环氧基的聚合物可以随后原位交联。该组合物在各种两阶段操作中有用,例如多层印刷电路板的生产。