The invention relates to biosourced vinylidene difluoride. The invention also relates to methods for preparation of biosourced vinylidene difluoride from various renewable raw materials. The invention also relates to homopolymers of vinylidene difluoride obtained from polymerization of said monomer, and also copolymers obtained by copolymerization of said monomer with one or several compatible comonomers. Finally, the invention relates to the use of said homopolymers or copolymers in applications, such as chemical engineering or electronics, in particular mass-market electronic devices.

The invention relates to biosourced vinylidene difluoride. The invention also relates to methods for preparation of biosourced vinylidene difluoride from various renewable raw materials. The invention also relates to homopolymers of vinylidene difluoride obtained from polymerization of said monomer, and also copolymers obtained by copolymerization of said monomer with one or several compatible comonomers. Finally, the invention relates to the use of said homopolymers or copolymers in applications, such as chemical engineering or electronics, in particular mass-market electronic devices.

Provided are a method for producing a fluoroethane, which is the desired product, with high selectivity; and a method for producing a fluoroolefin. The production method according to the present disclosure comprises obtaining a product comprising a fluoroethane represented by CX.sup.1X.sup.2FCX.sup.3X.sup.4X.sup.5 (wherein X.sup.1, X.sup.2, X.sup.3, X.sup.4, and X.sup.5 are the same or different and each represents a hydrogen atom, a fluorine atom, or a chlorine atom; and at least one of X.sup.1, X.sup.2, X.sup.3, X.sup.4, and X.sup.5 represents a hydrogen atom) from a fluoroethylene by a reaction in the presence of at least one catalyst in at least one reactor. The reaction is performed by introducing a starting material gas comprising the fluoroethylene into the reactor, and the water content in the starting material gas is 150 ppm by mass or less based on the total mass of the starting material gas.

Provided are a method for producing a fluoroethane, which is the desired product, with high selectivity; and a method for producing a fluoroolefin. The production method according to the present disclosure comprises obtaining a product comprising a fluoroethane represented by CX.sup.1X.sup.2FCX.sup.3X.sup.4X.sup.5 (wherein X.sup.1, X.sup.2, X.sup.3, X.sup.4, and X.sup.5 are the same or different and each represents a hydrogen atom, a fluorine atom, or a chlorine atom; and at least one of X.sup.1, X.sup.2, X.sup.3, X.sup.4, and X.sup.5 represents a hydrogen atom) from a fluoroethylene by a reaction in the presence of at least one catalyst in at least one reactor. The reaction is performed by introducing a starting material gas comprising the fluoroethylene into the reactor, and the water content in the starting material gas is 150 ppm by mass or less based on the total mass of the starting material gas.

The production method according to the present disclosure comprises obtaining a product containing the fluoroethane from a fluoroethylene by a reaction in the presence of catalysts. Each catalyst is formed by supporting a noble metal on a carrier. A reactor for performing the reaction is filled with a catalyst having a noble metal concentration of C1 mass % based on the entire catalyst and a catalyst having a noble metal concentration of C2 mass % based on the entire catalyst to form an upstream portion and a downstream portion, respectively; and C1<C2. The reaction is performed by bringing the fluoroethylene represented by formula (3) and hydrogen gas into contact with the upstream portion and the downstream portion in this order.

The production method according to the present disclosure comprises obtaining a product containing the fluoroethane from a fluoroethylene by a reaction in the presence of catalysts. Each catalyst is formed by supporting a noble metal on a carrier. A reactor for performing the reaction is filled with a catalyst having a noble metal concentration of C1 mass % based on the entire catalyst and a catalyst having a noble metal concentration of C2 mass % based on the entire catalyst to form an upstream portion and a downstream portion, respectively; and C1<C2. The reaction is performed by bringing the fluoroethylene represented by formula (3) and hydrogen gas into contact with the upstream portion and the downstream portion in this order.

Disclosed are compositions comprising HCFC-243db, HCFO-1233xf, HCFC-244db and/or HFO-1234yf and at least one additional compound. For the composition comprising 1234yf, the additional compound is selected from the group consisting of HFO-1234ze, HFO-1243zf, HCFC-243db, HCFC-244db, HFC-245cb, HFC-245fa, HCFO-1233xf, HCFO-1233zd, HCFC-253fb, HCFC-234ab, HCFC-243fa, ethylene, HFC-23, CFC-13, HFC-143a, HFC-152a, HFC-236fa, HCO-1130, HCO-1130a, HFO-1336, HCFC-133a, HCFC-254fb, CHF=CHCl, HFO-1141, HCFO-1242zf, HCFO-1223xd, HCFC-233ab, HCFC-226ba, and HFC-227ca. Compositions comprising HCFC-243db, HCFO-1233xf, and/or HCFC-244db are useful in processes to make HFO-1234yf. Compositions comprising HFO-1234yf are useful, among other uses, as heat transfer compositions for use in refrigeration, air-conditioning and heat pump systems.

Disclosed are compositions comprising HCFC-243db, HCFO-1233xf, HCFC-244db and/or HFO-1234yf and at least one additional compound. For the composition comprising 1234yf, the additional compound is selected from the group consisting of HFO-1234ze, HFO-1243zf, HCFC-243db, HCFC-244db, HFC-245cb, HFC-245fa, HCFO-1233xf, HCFO-1233zd, HCFC-253fb, HCFC-234ab, HCFC-243fa, ethylene, HFC-23, CFC-13, HFC-143a, HFC-152a, HFC-236fa, HCO-1130, HCO-1130a, HFO-1336, HCFC-133a, HCFC-254fb, CHF=CHCl, HFO-1141, HCFO-1242zf, HCFO-1223xd, HCFC-233ab, HCFC-226ba, and HFC-227ca. Compositions comprising HCFC-243db, HCFO-1233xf, and/or HCFC-244db are useful in processes to make HFO-1234yf. Compositions comprising HFO-1234yf are useful, among other uses, as heat transfer compositions for use in refrigeration, air-conditioning and heat pump systems.

Disclosed are compositions comprising HCFC-243db, HCFO-1233xf, HCFC-244 db and/or HFO-1234yf and at least one additional compound. For the composition comprising 1234yf, the additional compound is selected from the group consisting of HFO-1234ze, HFO-1243zf, HCFC-243db, HCFC-244db, HFC-245cb, HFC-245fa, HCFO-1233xf, HCFO-1233zd, HCFC-253fb, HCFC-234ab, HCFC-243 fa, ethylene, HFC-23, CFC-13, HFC-143a, HFC-152a, HFC-236fa, HCO-1130, HCO-1130a, HFO-1336, HCFC-133a, HCFC-254fb, CHF═CHCl, HFO-1141, HCFO-1242 zf, HCFO-1223xd, HCFC-233ab, HCFC-226ba, and HFC-227ca. Compositions comprising HCFC-243db, HCFO-1233xf, and/or HCFC-244db are useful in processes to make HFO-1234yf. Compositions comprising HFO-1234yf are useful, among other uses, as heat transfer compositions for use in refrigeration, air-conditioning and heat pump systems.

Disclosed are compositions comprising HCFC-243db, HCFO-1233xf, HCFC-244 db and/or HFO-1234yf and at least one additional compound. For the composition comprising 1234yf, the additional compound is selected from the group consisting of HFO-1234ze, HFO-1243zf, HCFC-243db, HCFC-244db, HFC-245cb, HFC-245fa, HCFO-1233xf, HCFO-1233zd, HCFC-253fb, HCFC-234ab, HCFC-243 fa, ethylene, HFC-23, CFC-13, HFC-143a, HFC-152a, HFC-236fa, HCO-1130, HCO-1130a, HFO-1336, HCFC-133a, HCFC-254fb, CHF═CHCl, HFO-1141, HCFO-1242 zf, HCFO-1223xd, HCFC-233ab, HCFC-226ba, and HFC-227ca. Compositions comprising HCFC-243db, HCFO-1233xf, and/or HCFC-244db are useful in processes to make HFO-1234yf. Compositions comprising HFO-1234yf are useful, among other uses, as heat transfer compositions for use in refrigeration, air-conditioning and heat pump systems.