Asahi Glass Company, Limited

Agc Inc.

Ryuji Seki

Kazuya Oharu

Seisaku Kumai

Takashige Maekawa

Hidekazu Okamoto

Shoji Furuta

Minako Shimada

Hiroshi Funaki

Taiki Hoshino

Hirokazu Takagi

Shuichiro Sugimoto

Mari Ichinokawa

Koji Sugimoto

Hiroki Kamiya

Satoshi Kawaguchi

Masao Iwaya

Toyomichi Shimada

Shouji Furuta

Minako Ishikawa

There is provided a method of efficiently manufacturing 1-chloro-2,3,3-trifluoropropene by an industrially feasible method by using a raw material which is easy to obtain. A method of manufacturing 1-chloro-2,3,3-trifluoropropene, including subjecting 3-chloro-1,1,2,2-tetrafluoropropane to a dehydrofluorination reaction in the presence of a base.

Method of manufacturing 1-chloro-2,3,3-trifluoropropene

To provide a process to produce 1,1-dichloro-2,3,3,3-tetrafluoropropene (CFO-1214ya) simply and economically without requiring purification of 1,1-dichloro-2,2,3,3,3-pentafluoropropane (HCFC-225ca) from the raw material component obtained as a mixture of isomers, i.e. dichloropentafluoropropane (HCFC-225) including HCFC-225ca and at the same time to produce simply and economically 2,3,3,3-tetrafluoropropene (HFO-1234yf) from 1-chloro-2,3,3,3-tetrafluoropropane (HCFC-244eb). A raw material composition comprising HCFC-244eb and HCFC-225 including HCFC-225ca is contacted with an alkali aqueous solution in the presence of a phase-transfer catalyst to produce CFO-1214ya from HCFC-225ca and at the same time to produce HFO-1234yf from HCFC-244eb.

Process for producing 1,1-dichloro-2,3,3,3-tetrafluoropropene and 2,3,3,3-tetrafluoropropene

A water and oil repellent composition having excellent durability, which can impart excellent water and oil repellency to an object, even in a process at low temperatures, and which enables water and oil repellent treatment providing a soft hand. A water and oil repellent composition which comprises, as an essential component, a copolymer containing polymerization units of the following monomer (a) and polymerization units of the following monomer (b):

Water and oil repellent composition

To provide a non-aqueous electrolyte solution for secondary batteries, by which a secondary battery having both high conductivity and stability free from thermal runaway may be obtained. A non-aqueous electrolyte solution for secondary batteries, which comprises a lithium salt (a1) represented by R&#x2014;CHF&#x2014;SO&#x2014;N(Li)&#x2014;SO&#x2014;CHF&#x2014;Rwherein in the formula (a1), each of Rand Rwhich are independent of each other, is a fluorinated Calkyl group which may contain an ethereal oxygen atom, or a fluorine atom, an inorganic lithium salt (a2), and a solvent, wherein the proportion of the lithium salt (a1) based on the total amount i.e. 100 mol % of the lithium salt (a1) and the inorganic lithium salt (a2) is from 5.0 to 20.0 mol %.

Non-aqueous electrolyte solution for secondary batteries

A method for purifying a fluorinated carboxylic acid having an etheric oxygen atom and its derivative, with small decomposition and inclusion of impurities. A liquid containing at least one member selected from the group consisting of a fluorinated compound represented by application formulae (1) and (2) is held at a heating temperature of at most 150&#xb0; C. and distilled. Further, the liquid is a liquid obtained from any of a waste liquid after an aqueous emulsion of a fluoropolymer is coagulated and the fluoropolymer is separated, an aqueous liquid obtained by cleaning an exhaust gas in a step of drying and/or a step of heat treatment of the separated fluoropolymer, and a liquid obtained by cleaning an anion exchange resin which has been brought into contact with the waste liquid or an aqueous dispersion obtained from the aqueous emulsion of the fluoropolymer, with an alkaline aqueous solution.

Method for purifying fluorinated compound

The current invention relates to a fluorinated elastomer latex containing an aqueous medium, a fluorinated elastomer dispersed in the aqueous medium in an amount of from 10 to 60 mass % and a fluorinated emulsifier represented by the formula (1): CFO(CFCFO)CFCOOA (wherein A is a hydrogen atom, an alkali metal or NH, and m is an integer of from 1 to 3), which employs no perfluorooctanoate emulsifier and which is excellent in dispersion stability of the fluorinated elastomer.

Fluorinated elastomer latex, its production method, fluorinated elastomer and fluororubber molded product

A process for producing a polyfluoroalkyl (meth)acrylate, which comprises isolating, from a reaction mixture containing a polyfluoroalkyl (meth)acrylate obtained by reacting a polyfluoroalkyl iodide of the formula CF(CH)I (wherein n is an integer of from 2 to 7, and m is an integer of from 1 to 4) with a metal (meth)acrylate in tert-butanol, said polyfluoroalkyl (meth)acrylate by the following steps (1) to (3):

Process for producing a polyfluoroalkyl (meth)acrylate

An aqueous dispersion comprising a polymer (a) having a repeating unit (A) which comprises four carbon atoms connected in a linear chain and which has one double bond at the second position and a polyfluoroalkyl group bonded to an arbitrary carbon atom, and a surfactant (B) having a hydrophile-lipophile balance of at least 10, wherein the polymer (a) is dispersed in an aqueous medium by the surfactant (B).

Aqueous dispersion

The following fluorine-containing compound is presented which is capable of providing dry soil resistance when incorporated to a water and oil repellent. RROCOCHCHRCOORR(wherein each of Rand Rwhich are independent of each other, is a Cpolyfluoroalkyl group, Ris a hydrogen atom or a Calkyl group, and each of Rand Rwhich are independent of each other, is a Calkylene group, etc.).

Fluorine-containing compound, and water and oil repellent composition

Water repellent and oil resistant composition

A water dispersion type water and oil repellent composition which undergoes little change in viscosity even if freezing/thawing cycles are repeated and which is excellent in storage stability. The dispersion is capable of imparting excellent water and oil resistance to paper. A water dispersion type water and oil repellant composition contains a compound which is mixable with water and has a flash point of from 50 to 150&deg; C. A polyfluoroalkyl group-containing phosphate may be incorporated into the mixture.

Water-and-oil repellant composition of aqueous dispersion type

Composition for treating paper and paper treated therewith

A method for producing a hydrofluorocarbon of the formula H.sub.n R.sub.f H wherein n is 0 or 1, and when n is 0, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkyl group, and when n is 1, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkylene group, which comprises reacting an iodofluorocarbon of the formula I.sub.n R.sub.f I wherein n and R.sub.f are as defined above, with a reducing agent in a gas phase.

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Kanagawa, Japan

Ryuji Seki