A curable latex composition, suitable for forming films and foams includes a carboxylated latex comprising a copolymer of from 0 to 75 % by weight of a vinyl aromatic monomer, from 0 to 85 % by weight of a diene monomer and from 0.5 to 25 % by weight of an ethylenically unsaturated carboxylic acid monomer, an epoxy resin emulsion containing an organo-soluble or organo; miscible catalyst and a water-soluble catalytic curing agent. The latex is produced by emulsion polymerization of one or more monomers in an aqueous environment. The various components of the curable latex composition may be maintained separately until shortly before use because of their ambient temperature curing properties. In some instances two or more components which do not react with each other can be premixed. The present curable latex composition has improved shelf life, cures fast at relatively low temperature and provides plastic films or foams with improved moisture resistance and other physical properties. This composition is suitable for use as latex foam backing of textiles, textile and lamination adhesive and synthetic carpet grass coating.
一种适用于形成薄膜和泡沫的可固化胶乳组合物包括一种羧基胶乳,该胶乳由 0% 至 75% (按重量计)的
乙烯基芳香族单体、0% 至 85% (按重量计)的二烯单体和 0.5% 至 25% (按重量计)的
乙烯基不饱和
羧酸单体的共聚物、含有有机可溶或有机可混溶催化剂和
水溶性催化固化剂的环氧
树脂乳液组成。胶乳是由一种或多种单体在
水环境中进行乳液聚合而制成的。可固化胶乳组合物的各种成分因其环境温度固化特性,可分开保存至使用前不久。在某些情况下,可以预先混合两种或两种以上不会相互反应的成分。本发明的可固化乳胶组合物具有更长的保质期,可在相对较低的温度下快速固化,并提供具有更好的防潮性和其他物理性能的塑料薄膜或泡沫。这种组合物适合用作纺织品的乳胶泡沫衬底、纺织品和层压粘合剂以及合成地毯草涂层。