申请人:ALLIED CORPORATION
公开号:EP0094512A2
公开(公告)日:1983-11-23
Surfactant-modified, 1,1,2-trichloro-1,2,2-trifluoroethane solvent compositions are provided which contain small but effective amounts, i.e., about 0.2 to about 0.5 weight percent of solvent soluble/water insoluble surfactant and/or surfactant demulsifiers and adjust to accommodate. Of particular significance are the compositions containing N-acylated sarcosine surfactants and demulsifiers of the group acetylenic diols, aliphatic primary alcohols of 6 to 12 carbon atoms, and alkyl phosphate triesters of 3 to 12 carbon atoms. The demulsifier containing compositions have the properties of effectively and essentially completely displacing water or aqueous solutions from many substrates and, even under conditions of severe agitation, separating them for removal by decantation from the solvent layer without the drawback of forming stable emulsions that prevent said decantation and interfere with sufficient processing of the solvent drying compositions through the drying apparatus.
提供了表面活性剂改性的1,1,2-三氯-1,2,2-三氟乙烷溶剂组合物,其中含有少量但有效的,即约0.2至约0.5重量%的溶剂可溶/水不溶表面活性剂和/或表面活性剂破乳剂,并可调整以适应。特别重要的是含有 N-酰化肌氨酸表面活性剂和乙炔二醇、6 至 12 个碳原子的脂肪族伯醇和 3 至 12 个碳原子的烷基磷酸三酯类破乳化剂的组合物。含有破乳化剂的组合物具有从许多基质中有效地、基本上完全地置换出水或水溶液的特性,即使在剧烈搅拌的条件下,也能将它们分离出来,以便从溶剂层中倾析去除,而不会形成稳定的乳状液,从而妨碍倾析,并影响溶剂干燥组合物在干燥设备中的充分加工。