Shin-etsu Chemical Co., Ltd.

Kabushiki Kaisha Meidensha

Mitsubishi Gas Chemical Company, Inc.

Takeda Chemical Industries, Inc.

Menicon Co., Ltd.

Shin-etsu Chem Co., Ltd.

Akira Yamamoto

Shoji Ichinohe

Kazuhiko Nakada

Toshio Yamazaki

Kenichi Isobe

Masahiko Minemura

Mitsuo Asai

Takashi Uemura

Kyuya Yamazaki

Shouhei Kozakai

Takahiro Adachi

Mitsuhiro Nishimura

Masatoshi Asano

Sadao Fujimori

Tomohisa Suzuki

Satoshi Uchida

Shouji Ichinohe

Takahito Nakase

Toshifumi Kamiyama

Masayuki Egami

A transparent gel is disclosed which has an interpenetrating polymer network of a copolymer containing a polysiloxane structure and a polycarbonate structure and a hydrophilic polymer obtained by polymerizing a hydrophilic monomer. The transparent gel is useful as a cultivation substrate, a container for storage and an ophthalmic material, comprising an easily synthesizable and purifiable silicon-containing resin, wherein a gel strength, transparency, oxygen permeability, birefringence and other characteristics are excellent.

Transparent gel and contact lense from the same

A highly volatile electrical/electronic parts surfactant containing a polyether-modified silicone having one polyether chain in the molecule, wherein the surface tension at 25&#xb0; C. of a 0.01 mass % aqueous solution thereof is 25 mN/m or less, the aforesaid silicone is expressed by the following average structural formula (1), and when heated from room temperature to 200&#xb0; C. at a rate of 5&#xb0; C./minute to 200&#xb0; C. and maintained at a temperature of 200&#xb0; C. for 100 minutes, the polyether-modified silicone completely volatilizes without leaving any remainder, and a method of manufacturing this highly volatile polyether-modified silicone are disclosed.AMeSiO(MeASiO)SiMeA&#x2003;&#x2003;(1) In formula (1), any one of A is a substituent group expressed by the following general formula (2), the remaining A are methyl groups and n is an integer from 0-2.&#x2014;CHO(CHO)R&#x2003;&#x2003;(2) In formula (2), a is 3-4, b is an integer from 1-7 and R is a methyl group or an ethyl group.

Highly volatile polyether-modified silicone surfactant

A device for testing a transaxle is constructed such that a drive motor is coupled with an input shaft of the transaxle through an input-shaft torque meter, and dynamometers are coupled with output shafts of the transaxle through axle shafts and output-shaft torque meters, respectively.

Device for testing transaxle

In the coating composition for a optical fiber of the present invention, a polyurethane (meth)acrylate oligomer (A), which is based on a urethane prepolymer having an equivalent ratio of NCO group in a polyisocyanate (a) to OH group in a polyol (b) of more than 3.0, is used and the oligomer (A) has a mixing weight ratio of an oligomer (d) having a number average molecular weight of 800 or less to an oligomer (e) having a number average molecular weight of 1,000 or more of 30/70-70/30. The coating composition of this invention has a low viscosity, and therefore, is suitable for a rapid fiber-drawing in a production of an optical fiber. Further, a cured material obtained from the coating composition of the present invention has both a high elastic modulus and a high elongation, which properties are required for a hard material, and has a slight change of elastic modulus with a change of temperature to improve a long-term reliability of an optical fiber.

Coating composition for optical fiber

A water soluble water absorption preventing agent mainly comprising an organic silicon compound and/or its partial hydrolytic condensate, represented by the following general formula: ##STR1## wherein R.sup.1 denotes an alkyl group with 1-20 carbon atoms and with a linear chain or branched chain for which a halogen can substitute for part or all of the hydrogen atoms, R.sup.2 denotes a hydrogen atom or an alkyl group with 1-10 carbon atoms and with a linear chain or branched chain, R.sup.3 denotes a hydrogen atom or an alkyl group with 1-8 carbon atoms and with a linear chain or branched chain, m denotes an integer 1-2 and n denotes an integer 1-3 where m+n=3 or 4, p denotes an integer 1-50, and q denotes an integer 0-25.

Water absorption preventing agent having water solubility and a method

A thermal transfer material comprises a film-form base on one side of which a thermal transfer pigment layer is provided wherein the other side of said film-form base has a back coating layer comprising a polysaccharide derivative(s) reacted with organopolysiloxane or a cured product thereof.

Thermal transfer material

A twin roller type chassis dynamometer includes two coxially arranged load rollers and two coaxially free rollers. The two pairs of rollers are arranged parallel to one another. One of the free rollers includes an outer rotor dynamometer. The rotor of this device is connected by way of a belt drive with one of the load rollers in a manner which produces a step-up gearing and drives the rotor faster than the load roller.

Twin roller chassis dynamometer

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Gunma, Japan

Akira Yamamoto