A wide temperature water borne sealant that can be applied at low temperatures. The sealant can be a latex sealant composition including at least one latex polymer, at least one freeze thaw stabilizer, and at least one peptone or at least one additive derived from a peptone. The latex polymer can be an acrylic latex polymer with a Glass Transition Temperature (Tg) of 0° C. or less. The peptone can be enzymatic hydrolysate. The sealant can remain pliable at low temperatures making it ideal for applications that require flexibility at low temperatures its' rheology and viscosity are such that it can be applied at temperatures below 0° C. The low Tg latex assures that the sealant will remain permanently flexible and non-tacky when cured, and the peptone provides the sealant with the means to prevent the water from freezing down to approximately −20° C.
一种可在低温下使用的宽温
水性密封剂。密封剂可以是一种乳胶密封剂组合物,包括至少一种乳胶聚合物、至少一种冻融稳定剂和至少一种
蛋白胨或至少一种从
蛋白胨中提取的添加剂。胶乳聚合物可以是
玻璃转化温度(Tg)为 0℃或更低的
丙烯酸胶乳聚合物。
蛋白胨可以是酶
水解物。低 Tg 胶乳可确保密封剂在固化后保持永久柔韧和不粘腻,
蛋白胨可防止密封剂中的
水在低至约 -20°C 的温度下结冰。