Occidental Chemical Corporation

Emerald Agrochemicals Company Avv

Edward A Rowe

Hang-Chang Bobby Chen

Mark E Lindrose

Pravin M Khandare

Disclosed is a composition of about 20 to about 80 wt % benzotrifluoride and about 20 to about 80 wt % trichloroethylene. Up to about 1 wt % of a stabilizer for the trichloroethylene can be included in the composition.

Rapidly evaporating cleaning compositions

Disclosed is a cleaning composition of about 80 to about 99 wt % benzotrifluoride, about 1 to about 20 wt % monohydric alkanol from C.sub.1 to C.sub.4, and up to about 20 wt % of a fluorocarbon having the general formula C.sub.m H.sub.n F.sub.2m+2n, where m is 4 to 8 and n is 1 to m/2 if m is even and (m+1)/2 if m is odd. The composition is useful in cleaning greases, oils, solder fluxes, and other soils.

Cleaning composition containing benzotrifluoride

Disclosed is a method of making chlorinated hydrocarbons. A mixture is prepared of a hydrocarbon or partially chlorinated hydrocarbon from C.sub.18 to C.sub.30 and either benzotrifluoride or parachlorobenzotrifluoride in an amount sufficient to liquefy the mixture at the chlorination temperature. The mixture is heated to a temperature of about 50.degree. to 100.degree. C. and sufficient chlorine gas is passed therethrough in the presence of UV light to form a chlorinated hydrocarbon that is about 60 to about 80 wt. % chlorine. One part by weight of the composition is added to at least two parts by weight per part of a C.sub.1 to C.sub.6 monohydric alcohol, which results in the precipitation of the chlorinated hydrocarbon. The precipitated chlorinated hydrocarbon can be removed from the composition by, for example, filtration.

Method of making chlorinated hydrocarbons

Cleaning solvents containing benzotrifluoride and fluorinated compounds

Disclosed is a single phase liquid composition comprising 0.5 to 30 wt % of a benzotrifluoride solvent, about 0.5 to about 50 wt % of a glycol ether cosolvent, up to about 50 wt % of an alkanol, up to about 10 wt % of a surfactant, and the remainder water. The composition is effective in cleaning hard surfaces, stripping paint, and as a carrier.

Single phase liquid composition for cleaning and paint stripping and use

Disclosed is a mixture of about 10 to about 60 volume percent monochlorobenzotrifluoride, about 10 to about 60 volume percent monochlorotoluene, and about 20 to about 60 volume percent perchloroethylene. Also disclosed is a mixture of about 10 to about 30 volume percent monochlorobenzotrifluoride, about 40 to about 60 volume percent monochlorotoluene, and about 30 to about 50 volume percent perchloroethylene. The mixtures are used as solvents to form coatings of organic polymers and to clean parts.

Solvent mixtures having enhanced evaporation

Disclosed is a method of removing chlorine from a mixture of gases. The mixture of gases is contacted with a liquid which contains a compound having the general formula ##STR1## where n is 1 to 3, whereby chlorine in the mixture of gases is absorbed by the liquid. The liquid is then heated to volatilize the chlorine and separate it from the liquid.

Method for separating chlorine from a mixture of gases

Disclosed is a method of removing synthetic and natural resins from an article containing an epoxy resin without damaging the epoxy resin. The article is contacted with a solvent having the formula ##STR1## where n is 1 or 2, which dissolves the synthetic and natural resins and forms a solution. The solution is then separated from the article. The solvent can be recovered from the solution.

Method of cleaning epoxy articles

Disclosed is a method and degreasing apparatus for cleaning articles. The articles are contacted with a chlorinated benzotrifluoride liquid which is subsequently washed from the articles using liquid methylene chloride. The degreaser includes means for applying the liquids to the articles and can also include means for evaporating some of the methylene chloride to render vapors of the chlorinated benzotrifluoride nonflammable.

Method and apparatus for cleaning articles

Disclosed is a mixture of about 1 to about 99 volume percent monochlorotoluene and about 1 to about 99 volume percent monochlorobenzotrifluoride. Also disclosed is a mixture of about 10 to about 60 volume percent monochlorotoluene, about 10 to about 60 volume percent monochlorobenzotrifluoride, and about 30 to about 60 volume percent perchloroethylene. The mixtures are used as solvents to form coatings of organic polymers and to clean parts.

Disclosed is a composition of about 25 to about 85 wt % perchloroethylene and about 15 to about 75 wt % monochlorotoluene. When the composition contains at least about 30 wt % perchloroethylene it does not display a flash point.

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Grand Island, NY, United States of America

Edward A Rowe