Tosoh Corporation

Toyo Soda Manufacturing Co., Ltd.

Tosoh F-tech, Inc.

Central Glass Company, Limited

Onoda Cement Co., Ltd.

F-tech Inc.

Other

Sagami Chemical Research Center

Shoji Arai

Yutaka Tamano

Yukihiro Tsutsumi

Hideyuki Mimura

Toshihiro Saito

Kenji Tokuhisa

Kazuhiko Maeda

Satoru Miyazawa

Kosuke Kawada

Hiroyuki Yoshimura

Masazumi Hasegawa

Shuichi Okuzono

Norihisa Kondo

Eiji Ogura

Kunihiro Mito

Kazunori Nukui

Kazuhiro Nakamura

Takamasa Fuchikami

Koji Kato

Masaki Ishida

Noriko Wakasa

Akitaka Hattori

Hideaki Matsunaga

Noritaka Nagasaki

Tadao Onaka

Hiroshi Fukuda

Shinya Mizoe

Hiroaki Mizumoto

Masami Takemitsu

Kazuhiko Tokoyoda

Tsuyoshi Kawamura

Akihiko Nomura

Tomohiro Washiyama

Takao Kato

T Iii-702 Gou Kimura-Roiyarumansyon Fuchikami

Noriko; Wakasa

The present invention relates to a polymerizable monomer represented by the general formula (1), wherein Ris a hydrogen atom, a halogen atom, a hydrocarbon group or a fluorine-containing alkyl group; Ris a straight-chain or branched alkyl group, a cyclic alkyl group, an aromatic group, or a substituent having at least two of these groups, the Rbeing optionally partially fluorinated; Ris a hydrogen atom, a hydrocarbon group that is optionally branched, a fluorine-containing alkyl group, or a cyclic group having an aromatic or alicyclic structure, the Roptionally containing a bond of an oxygen atom or carbonyl group; and n is an integer of 1-2.

Fluorine-containing polymerisable monomer and polymer prepared by using same

A process for producing a fluorine-containing acrylic acid ester represented by CH&#x2550;C(Rf)(COOR) characterized in that 1-bromo-1-perfluoroalkylethene represented by CH&#x2550;CBr&#x2014;Rf, or 1,2-dibromo-1-perfluoroalkylethane represented by CHCBr&#x2014;CHBr&#x2014;Rf is allowed to react with an alcohol represented by ROH in the presence of a palladium catalyst, carbon monoxide, and two or more kinds of bases. The fluorine-containing acrylic acid ester is a useful compound having wide applications in materials for pharmaceuticals and functional polymers.

Method for producing fluorine-containing acrylate

The present invention concerns a method for purifying/separating a 2-fluoro-3-oxoalkylcarboxylic acid ester from a reaction mixture resulting from the fluorination of a 3-oxoalkylcarboxylic acid ester. The method involves depleting the reaction mixture of a hydrogen fluoride byproduct; and subsequently, separating the 2-fluoro-3-oxoalkylcarboxylic acid ester by distillation. The 2-fluoro-3-oxoalkylcarboxylic acid ester obtained by the method of the invention is highly pure and is thus suitable for use as an intermediate for the production of pharmacological products or agricultural chemicals.

Method of purifying and separating 2-fluoro-3-oxoalkylcarboxylic acid ester

A method for producing 2,2,2-trifluoroethanol in which a &#x3b3;-hydroxybutyric acid salt is reacted with 1,1,1-trifluoro-2-chloroethane to generate 2,2,2-trifluoroethanol is provided. This method leads to increased yields of 2,2,2 -trifluoroethanol, facilitates the separation of salt byproducts and allows the recycling of an aprotic polar solvent. The present invention concerns a method for producing 2,2,2-trifluoroethanol in which a &#x3b3;-hydroxybutyric acid salt is reacted with 1,1,1-trifluoro-2-chloroethane in an aprotic polar solvent to generate 2,2,2-trifluoroethanol. This method is characterized in that the &#x3b3;-hydroxybutyric acid salt used contains no more than 6 wt % of 4,4'-oxybis(butyric acid).

Method for producing 2,2,2-trifluoroethanol

The present invention relates to a polymerizable monomer represented by the general formula (1), wherein Ris a hydrogen atom, a halogen atom, a hydrocarbon group or a fluorine-containing alkyl group; Ris a straight-chain or branched alkyl group, a cyclic alkyl group, an aromatic group, or a substituent having at least two of these groups, the Rbeing optionally partially fluorinated; Ris a hydrogen atom, a hydrocarbon group that is optionally branched, a fluorine-containing alkyl group, or a cyclic group having an aromatic or alicyclic structure, the Roptionally containing a bond of an oxygen atom or carbonyl group; and n is an integer of 1&#x2013;2.

Fluorine-containing polymerizable monomer and polymer prepared by using same

A process for producing a 2-fluoro-3-oxoalkylcarboxylic acid ester by fluorinating 3-oxoalkylcarboxylic acid ester with a fluorine gas is provided. The process is characterized in that the concentration of 3-oxoalkylcarboxylic acid ester in the reaction mixture for fluorination is maintained at 3 wt % or higher. Also provided is a process for purifying 2-fluoro-3-oxoalkylcarboxylic acid ester characterized in that 2-fluoro-3-oxoalkylcarboxylic acid ester is produced at high yield and with less impurities by washing fluorinated 3-oxoalkylcarboxylic acid ester with 3 or more times as much water as the amount of reaction mixture. According to the processes of the present invention, not only is the generation of unwanted by-products minimized, but fluorinated 3-oxoalkylcarboxylic acid ester can be purified in an efficient manner. Thus, the present invention permits efficient production of considerably pure 2-fluoro-3-oxoalkylcarboxylic acid ester, a useful intermediate material in the production of various medical and agricultural agents.

Process for preparing 2-fluoro-3-oxoalkylcarboxylic acid ester

A method for producing fluorinated alcohols from fluorinated alkyl halides can produce fluorinated alcohols at high product yield and at high selectivity in a single-step reaction. The method eliminates the need to use heavy metals and other toxic compounds that are difficult to handle or process. Specifically, the method produces a fluorinated alcohol represented by the following general formula (2):Rf(A)OH&#x2003;&#x2003;(2)wherein Rf represents a perfluoroalkyl group having 1 to 10 carbon atoms; and A represents a straight-chained or branched saturated hydrocarbon group having 3 to 10 carbon atoms. The method is characterized in that it allows a fluorinated alkyl halide represented by the following general formula (1) to react with an alkali metal salt of 4-hydroxybutyrate in a gamma-butyrolactone solvent:Rf(A)X&#x2003;&#x2003;(1)wherein Rf and A are as defined above; and X represents a halogen atom.

Process for producing fluorinated alcohol

Fluorine-containing acrylate monomers

A novel process is provided for producing a 5-perfluoroalkyl-5,6-dihydrouracil represented by General Formula (1): ##STR1## (where R.sup.1 and R.sup.2 are independently hydrogen, methyl, or ethyl, and Rf is a perfluoroalkyl of 1 to 10 carbons). The process comprises reacting .alpha.-perfluoroalkylacrylic acid represented by General Formula (2):

Process for producing 5-perfluoroalkyluracil derivatives

A process for producing a polymer having sulfonic acid groups is provided which comprises treating a polymer having sulfonate salt groups with a ion-exchange resin to change the sulfonate salt groups into sulfonate acid groups with porous-type strongly acidic cation exchange resin. A process for producing a tertiary alcohol is also provided which comprises hydration of olefin by use of the aforementioned polymer as the catalyst. By the process, a tertiary alcohol is produced by hydration of olefin with high selectivity at low cost.

Process for producing tertiary alcohol and for preparing catalyst

Process for producing a flexible polyurethane foam through reaction of a polyol with a polyisocyanate in the presence of an amine catalyst, a blowing agent, and a foam stabilizer, the amine catalyst comprising at least one of the imidazoles represented by the general formula below: ##STR1## wherein R.sup.1 is alkyl of 1 to 4 carbons, dimethylaminopropyl, benzyl, vinyl, or hydroxyalkyl of 1 to 3 carbons; R.sup.2 is hydrogen, alkyl of 1 to 4 carbons, allyl, benzyl, or phenyl; and R.sup.3 and R.sup.4 are respectively hydrogen, alkyl of 1 to 4 carbons, or hydroxymethyl.

Process for producing flexible polyurethane foam having high air flow

A method for preventing agglomeration of powder, characterized in that a poly(oxyethylene)diglycosic acid is incorporated as an anti-agglomeration agent to the powder.

Method for preventing agglomeration of powder

A process for producing a high resilience polyurethane foam by reacting a polyol with a polyisocyanate in the presence of a catalyst, a blowing agent, and a foam stabilizer; said polyisocyanate containing at least diphenylmethane diisocyanate and/or a mixture of diphenylmethane diisocyanate with a derivative thereof, the blowing agent being water, or water and a halogenated hydrocarbon in amounts of not less than 2 parts by weight of water and not more than 20 parts by weight of the halogenated hydrocarbon based on 100 parts by weight of the polyol, and the catalyst being at least one selected from the compounds represented by the formula (I) below: ##STR1## where R.sup.1 is alkyl having 1 to 4 carbons, dimethylaminopropyl, benzyl, vinyl, or hydroxyalkyl having 1 to 3 carbons; R.sup.2 is hydrogen, alkyl having 1 to 4 carbons, alkyl, benzyl or phenyl; and R.sup.3 and R.sup.4 are independently hydrogen, alkyl having 1 to 4 carbons, or hydroxymethyl.

Process for producing high resilience polyurethane foam

A process for producing a rigid polyurethane foam by use of a decreased amount of a CFC blowing agent and an increased amount of water used as a blowing agent, maintaining a high degree of heat insulation and improving the deterioration in friability of the product. The catalyst is one of the imidazoles represented by the formula (I): ##STR1## where R.sup.1 is alkyl having 1 to 4 carbons, benzyl, dimethylaminopropyl, or hydroxyalkyl having 1 to 3 carbons; R.sup.2 is hydrogen, alkyl having 1 to 4 carbons, allyl, or benzyl; and R.sup.3 and R.sup.4 are independently hydrogen, methyl, or hydroxymethyl.

Process for producing rigid polyurethane foam

A fine-cell rigid polyurethane foam is prepared by reacting a polyol having a blowing agent such as water incorporated therein with a polyisocyanate in the presence of an amine catalyst having a retarding effect. The amine catalyst is comprised of (a) 30 to 50 parts by weight of triethylene diamine, (b) 30 to 50 parts by weight of bis(dimethylaminoethyl)ether and/or N,N',N',N'-pentamethyldiethylene triamine, (c) up to 40 parts by weight of tetramethylhexamethylene diamine and/or trimethylaminoethylpiperazine, and (d) formic acid in an amount of 0.2 to 1.5 moles per mole of triethylene diamine.

Amine catalyst for forming fine-cell rigid polyurethane foam

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Yamaguchi, Japan

Shoji Arai