Kaneka Corporation

Yamamura Glass Co., Ltd.

Keneka Corporation

Other

Kanegafuchi Kagaku Kogyo Kabushiki Kaisha

Akio Konishi

Masayuki Adachi

Takaharu Matsumoto

Takahiro Ogawa

Hidekazu Hashima

Hajimu Wakabayashi

Shoichi Murata

Masaaki Yokoe

Yoshinobu Maeda

Ryohei Terai

Kenichiro Cho

Yoshinori Tanigami

Nobuyuki Nishi

Masaharu Fujii

Takahiro Tabata

Toshimitsu Mori

Yoji Kawamoto

Kazuaki Fujiwara

A flame retardant union fabric obtained by combining (A) 30 to 70% by weight of a fiber comprising as a main component a flame retardant halogen-containing fiber made of a composition comprising 100 parts by weight of an acrylic copolymer of 30 to 70% by weight of acrylonitrile, 30 to 70% by weight of a halogen-containing vinyl monomer and 0 to 10% by weight of a vinyl monomer copolymerizable with them, 10 to 30 parts by weight of an antimony compound and 8 to 30 parts by weight of a zinc stannate compound, with (B) 70 to 30% by weight of a cellulosic fiber. The flame retardant union fabric shows a high flame resistance which passes the M1 class of NF P 92-503 burning test in France even after the post-treatment.

Flame-retardant union fabric

The present invention provides synthetic hair comprising fiber of 30 to 100 decitex, comprising an acrylic copolymer obtained by copolymerizing acrylonitrile, vinylidene chloride and a vinyl monomer containing a sulfonic acid group and a process for preparing the synthetic hair. The synthetic hair of the present invention has favorable surface gloss and excellent knot strength and hair breaking in the sewing machine steps when preparing the weft and in implanting hair to skin when preparing wigs and toupees is improved. The fiber which becomes the synthetic fiber is prepared by preparing a spinning solution containing, in a polymer solution of an acrylic polymer comprising 40 to 74% by weight of acrylonitrile, 25 to 59% by weight of vinylidene chloride and 1 to 5% by weight of a vinyl monomer containing a sulfonic acid group copolymerizable therewith and a good solvent, 5 to 20 parts by weight of water based on 100 parts by weight of the polymer, forming fiber by wet spinning, conducting drawing treatment so that the total drawing ratio becomes 2.5 to 12 times and conducting relaxing treatment so that the total relaxation ratio becomes at least 15%. By this method, synthetic hair is obtained, in which the gloss contrast is at least 0.88, the knot strength is at least 0.5 cN/decitex and the average fineness of the filament is 30 to 100 decitex.

Artificial hair and method for production thereof

A novel amorphous optical device contributes to economic construction of optical computers. Since economic parallel processing of signals such as image information is made possible, the novel amorphous optical device contributes also to development of optical computers capable of performing ultra-high speed and parallel processing, object recognizing apparatuses in which image optical signals are processed by using image optical signals, motion picture extracting apparatuses used for eyes of robots and object movement monitors and optical surge absorbers. An amorphous optical device which is doped with an element having a negative optical input-output characteristic to incident light, wherein the number of ions and/or atoms of the element is 1&times;10 to 2.8&times;10 per 1 m of an amorphous material, and has a negative optical input-output characteristic to incident light, an amorphous optical device which comprises amorphous optical device described above and shaped two dimensionally and controls image optical signals directly by using image optical signals and an amorphous optical device described above which uses light obtained by spectrally splitting or filtering the sunlight, thermal radiation light or light emitted from a fluorescent material by electrons emitted by electric field, or laser light as the light source are provided.

Amorphous optical device

Flame retardant cloth

Thermal resistance-improved flame retardant cloth

A process for producing a thin film of a fluoride comprising reacting a gaseous fluorinating agent and gas of a volatile organometallic compound in a gas phase in a reactor, wherein a plasma of the gaseous fluorinating agent obtained by activating the gaseous fluorinating agent by microwave under a condition of electron cyclotron resonance is used as a fluorine source, and the fluoride is deposited on a substrate by reacting the plasma of the gaseous fluorinating agent with the gas of a volatile organometallic compound at outside of an area of generation of the plasma. A thin film of a fluoride which contains very little impurities such as carbon, oxygen, and organic substances, and is highly pure, transparent, and consolidated is produced.

Process for producing a thin film of a flouride

A novel heat-generating composition comprises an electrically conductive powder, and a crystallizable glass frit which is alkaline-earth borate glass essentially containing at least one component of rare-earth metal oxides and Bi.sub.2 O.sub.3. A novel heat-generating composition comprises a molybdenum silicide as an electrically conductive powder, a glass frit, and an additive which is metal oxide powder and/or metal powder. A novel heat-generating composition comprises a combination of a molybdenum silicide and a nickel silicide as electrically conductive powder, a glass frit, and a nickel powder as an additive. The heat-generating composition is sintered in a nitrogen atmosphere or in air, to produce a heater, which has a low electrical-resistance value and a good heat-resistance.

Heat-generating composition

Acrylic fibers having high fire retardancy, glossiness and transparency comprise a copolymer containing 30 to 70% by weight of acrylonitrile and 30 to 70% by weight of at least one halogen-containing monomer, and further contain 0.2 to 3.0% by weight of at least one organic tin compound which is soluble in a solvent which can dissolve the copolymer, and 0.2 to 20% by weight of a glycidyl methacrylate polymer, based on the weight of the copolymer.

Fire retardant acrylic fibers containing organo-tin-sulfur compound

Growing community of inventors

Kakogawa, Japan

Akio Konishi