The present invention relates to a process for neutralizing a composition A comprising 1-chloro-3,3,3-trifluoropropene, 1,1-dichloro-1,3,3-trifluoropropane and one or more acid compound(s) of formula HX with X═F or Cl; said process comprising the step a) of bringing said composition A into contact with a solution B under conditions capable of limiting the formation of 1-chloro-1,3,3-trifluoropropene.

Processes for producing Z-1,1,1,4,4,4-hexafluorobut-2-ene and intermediates for producing same. A process for producing 2-chloro-1,1,1,4,4,4-hexafluorobutane comprises contacting 1,1,2,4,4-pentachlorobuta-1,3-diene with HF in the liquid phases. A process for producing E-1,1,1,4,4,4-hexafluorobut-2-ene comprises contacting 2-chloro-1,1,1,4,4,4-hexafluorobutane with base. A process for producing 2,3-dichloro-1,1,1,4,4,4-hexafluorobutane comprises contacting E-1,1,1,4,4,4-hexafluorobut-2-ene with a chlorine source. A process for producing 1,1,1,4,4,4-hexafluoro-2-butyne comprises contacting 2,3-dichloro-1,1,1,4,4,4-hexafluorobutane with a base. A process for producing Z-1,1,1,4,4,4-hexafluorobut-2-ene comprises contacting 1,1,1,4,4,4-hexafluoro-2-butyne with hydrogen and a catalyst.

Processes for producing Z-1,1,1,4,4,4-hexafluorobut-2-ene and intermediates for producing same. A process for producing 2-chloro-1,1,1,4,4,4-hexafluorobutane comprises contacting 1,1,2,4,4-pentachlorobuta-1,3-diene with HF in the liquid phases. A process for producing E-1,1,1,4,4,4-hexafluorobut-2-ene comprises contacting 2-chloro-1,1,1,4,4,4-hexafluorobutane with base. A process for producing 2,3-dichloro-1,1,1,4,4,4-hexafluorobutane comprises contacting E-1,1,1,4,4,4-hexafluorobut-2-ene with a chlorine source. A process for producing 1,1,1,4,4,4-hexafluoro-2-butyne comprises contacting 2,3-dichloro-1,1,1,4,4,4-hexafluorobutane with a base. A process for producing Z-1,1,1,4,4,4-hexafluorobut-2-ene comprises contacting 1,1,1,4,4,4-hexafluoro-2-butyne with hydrogen and a catalyst.

The invention relates to a process comprising contacting a composition comprising a (hydro)halocarbon and a compound of formula R.sub.f—C≡CX with a basic solution comprising an hydroxide, an alkoxide and/or an amide to reduce the concentration of R.sub.f—C≡CX, wherein R.sub.f is a perfluorinated alkyl group and X is H, F, Cl, Br, or I. The invention further relates to process for preparing a (hydro)halocarbon comprising (i) converting a starting material, optionally in the presence of HF and/or a catalyst, to a composition comprising the (hydro)halocarbon and a compound of formula R.sub.f—C≡CX, wherein R.sub.f is a perfluorinated alkyl group and X is H, F, Cl, Br, or I; (ii) contacting the composition with a basic solution comprising an hydroxide, an alkoxide and/or an amide to reduce the concentration of the compound of formula R.sub.f—C≡CX; and (iii) recovering the (hydro)halocarbon.

The invention relates to a process comprising contacting a composition comprising a (hydro)halocarbon and a compound of formula R.sub.f—C≡CX with a basic solution comprising an hydroxide, an alkoxide and/or an amide to reduce the concentration of R.sub.f—C≡CX, wherein R.sub.f is a perfluorinated alkyl group and X is H, F, Cl, Br, or I. The invention further relates to process for preparing a (hydro)halocarbon comprising (i) converting a starting material, optionally in the presence of HF and/or a catalyst, to a composition comprising the (hydro)halocarbon and a compound of formula R.sub.f—C≡CX, wherein R.sub.f is a perfluorinated alkyl group and X is H, F, Cl, Br, or I; (ii) contacting the composition with a basic solution comprising an hydroxide, an alkoxide and/or an amide to reduce the concentration of the compound of formula R.sub.f—C≡CX; and (iii) recovering the (hydro)halocarbon.

A process for producing E-1,1,1,4,4,4-hexafluorobut-2-ene comprises contacting 1,1,2,4,4-pentachlorobuta-1,3-diene with hydrogen fluoride in the vapor phase in the presence of a fluorination catalyst. A process for producing Z-1,1,1,4,4,4-hexafluorobut-2-ene further comprises contacting E-1,1,1,4,4,4-hexafluoro-2-butene with chlorine in the presence of a catalyst to produce 2,3-dichloro-1,1,1,4,4,4-hexafluorobutane, followed by reaction with base to produce 1,1,1,4,4,4-hexafluoro-2-butyne, and subsequently hydrogenating hexafluoro-2-butyne to produce Z-1,1,1,4,4,4-hexafluoro-2-butene.

A process for producing E-1,1,1,4,4,4-hexafluorobut-2-ene comprises contacting 1,1,2,4,4-pentachlorobuta-1,3-diene with hydrogen fluoride in the vapor phase in the presence of a fluorination catalyst. A process for producing Z-1,1,1,4,4,4-hexafluorobut-2-ene further comprises contacting E-1,1,1,4,4,4-hexafluoro-2-butene with chlorine in the presence of a catalyst to produce 2,3-dichloro-1,1,1,4,4,4-hexafluorobutane, followed by reaction with base to produce 1,1,1,4,4,4-hexafluoro-2-butyne, and subsequently hydrogenating hexafluoro-2-butyne to produce Z-1,1,1,4,4,4-hexafluoro-2-butene.

By fluorinating 1,2,3,3-tetrachloro-1-propene (1230xd) using hydrogen fluoride as a fluorinating agent, an efficient method for producing 1,2-dichloro-3,3-difluoro-1-propene (1232xd) is provided. Through this composition including 1232xd, there are also provided an environmentally friendly composition having excellent ability to dissolve various organic matters, a method for cleaning an article using the composition, a method for producing a lubricant solution using the composition, and a method for producing a component provided with a lubricant coating film.

By fluorinating 1,2,3,3-tetrachloro-1-propene (1230xd) using hydrogen fluoride as a fluorinating agent, an efficient method for producing 1,2-dichloro-3,3-difluoro-1-propene (1232xd) is provided. Through this composition including 1232xd, there are also provided an environmentally friendly composition having excellent ability to dissolve various organic matters, a method for cleaning an article using the composition, a method for producing a lubricant solution using the composition, and a method for producing a component provided with a lubricant coating film.

The present invention relates to a process for purifying 1-chloro-3,3,3-trifluoropropene comprising the steps of: a) providing a stream comprising 1-chloro-3,3,3-trifluoropropene and at least one compound of formula HX wherein X is F or Cl; b) bringing the stream from step a) into contact with a solution A comprising at least one sulfite salt of formula Y.sup.n+.sub.mSO.sub.3 wherein Y is an alkali or alkaline-earth metal, n=1 or 2, and m=2 when n=1 or m=1 when n=2; in order to form a neutralized stream A1 comprising 1-chloro-3,3,3-trifluoropropene.