Патент USA US2407246код для вставки
Patented Sept. 10, 1946 2,407,246 UNHTED STATES PATENT OFFICE 2,407,246 FLUORO-CHLORO HYDROCARBONS AND PROCESSES OF, MAKING THEM Anthony F. Benning, Woodstown, N. J., and Joseph D. Park, Wilmington, Del., assignors to Kinetic Chemicals, Inc., Wilmington, Del., a corporation of Delaware N0 Drawing. Application July 16, 1943, Serial No. 495,074 6 Claims. (0]. 260-653) 2 1 points, molecular weights, and refractive index A. This invention relates to the production of highly chlorinated ?uorine-containing hydro at 20° C. as follows: carbons. B. It is an object of the invention to prepare solvents which are sufficiently inert to be used M. W. Compound B. P. M. P Nn?" as such in a variety of reactions. It is another Oolc. Found object of the invention to prepare new com '' 0. ° C. pounds which are useful as reaction media. A CFJCHCICCIQCFI ____ __ 106 ______ ._ 268 258 1.3660 still further object of the invention is to prepare CFQCCIQCOIICF! _____ ._ 136 83-84 304 275 ______ _ new compounds which are useful in the transfer 10 ence of heat. Another object of the invention The molecular weights were obtained by the is to prepare the new compounds by processes freezing point depression method (cryoscopi which are e?icient yet relatively simple of ma cally). This method frequently gives molecular nipulation. C. The objects of the invention are accom plished, generally speaking, by preparing the 15 Weights lower than theoretical when applied to hydrocarbons of the ?uorinated type. F. These compounds are useful as solvents for the reactants of particular processes, as reaction media and as heat-transfer media. Their sta CFaCHCICClzCFs and CFsCClzCClzCFa bility is not extreme, but they are sufficiently 20 inert to serve satisfactorily in these uses. The objects of the invention relating to process G. As many apparently widely different em are accomplished by chlorinating the compound bodiments of this invention may be made with CFsCHClCHzCFa, a liquid disclosed in U. S. appli out departing from the spirit and scope thereof, cation Serial No. 435,064 and in Example XXIV it is to be understood that we do not limit our of U. S. application Serial No. 491,562 ?led June 25 selves to the speci?c embodiments thereof except 19, 1943, and claimed therein. as de?ned in the appended claims. D. In carrying out our invention the compound We claim: compounds represented by the formulas CF3CHC1CH2CF3 was transformed to the vapor phase and mingled with elementary chlorine in the presence of water vapor and diffused sun light. In order to accelerate the reaction, more intense heat and light may be admitted to the 1. The compound representd by the formula CF3CC12CC12CF3. 2. The compound represented by the formula CFsCHClCClzCFa. ' 3. The process of producing the compounds of reaction chamber. A photo?ood lamp is useful claim 4 which comprises contacting for this purpose. CF'aCHClCHzCFs E. The following example suf?ciently illus 35 with elementary chlorine in the vapor phase in trates the process. Example light. 4. The compounds represented by the formula CFaCXClCClzCFs, in which X is one of the group Twenty-four grams of CF3CHC1CH2CF3, having a boiling point between 35° and 36° 0., and 9.8 40 consisting of H and C1. 5. The process of preparing compounds of the grams of chlorine were placed in a, 5-liter ?ask type represented by the formula of claim 4 which and the temperature raised until the compound comprises mixing CFaCHClCHzCFs with chlorine was in the Vapor phase. Water vapor and sun and water vapor in the presence of light. light were admitted to the ?ask. After the re 6. A liquid product comprising a mixture of action had reached substantial completion, a 45 liquid product was obtained, which upon frac CFsCClzCClzCFz and CFaCI-ICICClzCFs. tionation yielded the following compounds, which ANTHQNY F. BENNING. are characterized by their boiling points, melting JOSEPH D. PARK.