The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 1987
Filed:
Apr. 28, 1986
Gary J Zyhowski, Hamburg, NY (US);
Francis J Figiel, Boonton, NJ (US);
Allied Corporation, Morris Township, Morris County, NJ (US);
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.degree. C. at barometric pressure of about 751.6 mm Hg.