Document Type and Number:
Japanese Patent JPH01502647
Kind Code:
A
Abstract:
A composition is disclosed comprising a low additive-water removal mixture consisting of a solution of about 0.15 to 0.01 weight percent phosphate ester free acid surfactant n an azeotropic composition of about 99.0 to 99.5 weight percent trichlorotrifluoroethane or trichloromonofluoromethane and about 1.0 to 0.5 weight percent t-amyl alcohol. A phosphate ester free acid surfactant that is commercially available and contains mixtures of both mono and diesters is incorporated. This mixture exhibits high solubility in the binary, azeotropic mixture and effectiveness even at low concentration. The concentration of said surfactant is about 100 ppm or 0.010 percent. The preferred binary system comprised of 99.25 to 99.50 weight percent of trichlorotrifluoroethane and 0.75 to 0.50 weight percent of t-amyl alcohol has a boiling point of about 47.2 DEG C. at barometric pressure of about 751.6 mm Hg.
Application Number:
JP50021886A
Publication Date:
September 14, 1989
Filing Date:
December 10, 1986
Export Citation:
International Classes:
B01D12/00; C09K3/18; C23G5/028; C23G5/032; (IPC1-7): B01D12/00; C09K3/18; C23G5/028; C23G5/032