A one-part, air-activatable, polymerizable composition comprising: (a) at least one free-radically polymerizable monomer, and (b) an activator system for effective polymerization of the free-radically polymerizable monomer, said activator system comprising at least one auto-oxidizable compound of a formula which includes the structure I: ##STR1## where x is 0 or 1, and where the lines representing unfilled valencies indicate bonds to carbon, hydrogen or hetero atoms, alone or in combination with a weak acid; with the proviso that: when x=0, the nitrogen atom in structure I is not bonded to a second nitrogen atom; and when x=1 there is a structure I in the compound in which the >C.dbd.C>moiety does not form part of a phenyl ring; with the proviso that the composition does not contain a peroxide, or a peroxide precursor which produces peroxide in the absence of air or any ingredient which is a significant source of radicals in the absence of air. Preferred auto-oxidizable compounds are selected from the group consisting of partially hydrogenated pyridines, condensation products of cyclic ketones and ureas, Schiff's bases, indoles, pyrroles, imidazoles, piperazines, carbazoles, tetrahydroquinolines, and substituted derivatives thereof, particularly dihydropyridines. The composition may also contain a soluble ionic salt, particularly a cobalt or iron salt. The compositions as described are stable on storage in the absence of air, are activated by exposure to air, and will then cure in either the presence or absence of air.
一种单组分、空气活化、可聚合的聚合物组合物,包括:(a) 至少一种自由基聚合单体,和(b) 用于有效聚合自由基聚合单体的活化剂系统,所述活化剂系统包括至少一种自氧化化合物,其
化学式包括结构式I:##STR1## 其中x为0或1,表示未填充的价键表示与碳、氢或杂原子的键合,单独或与弱酸的组合;但是当x=0时,结构式I中的氮原子未与第二个氮原子键合;当x=1时,化合物中存在一个结构式I,其中>C.dbd.C<官能团不是苯环的一部分;并且组合物不含过氧化物或在没有空气存在时产生过氧化物的过氧化物前体,或者任何在没有空气存在时是重要自由基来源的成分。优选的自氧化化合物选自部分氢化吡啶、环状酮和脲的缩合物、席夫碱、吲哚、吡咯、咪唑、哌嗪、咔唑、四氢喹啉及其取代衍生物,特别是二氢吡啶。组合物还可以含有可溶性离子盐,特别是钴或
铁盐。所述组合物在没有空气存在的情况下储存稳定,在暴露于空气后被激活,然后在有或没有空气存在的情况下固化。