Shin-Etsu Chemical Co., Ltd.

Mitsubishi Gas Chemical Company, Inc.

Menicon Co., Ltd.

Denso Corporation

Shin-Etsu Polymer Co., Ltd.

Other

Mazda Motor Corporation

Takata Corporation

Dainichiseika Color & Chemicals Mfg. Co., Ltd.

Mgc Filsheet Co., Ltd.

Nissin Chemical Industry Co., Ltd.

Masahiko Minemura

Mamoru Hagiwara

Kazuhiko Nakada

Takahiro Adachi

Akira Yamamoto

Tsutomu Nakamura

Tsuneo Kimura

Masaki Tanaka

Satoshi Kuwata

Kazuyuki Hanada

Munenao Hirokami

Noriyoshi Ogawa

Kinji Hirai

Tsuyoshi Watanabe

Susumu Nakamura

Takayuki Takahashi

Yasuhiko Suzuki

Katsunori Iwase

Junya Ishida

Masanao Kamei

Ichiro Ono

Mitsuhiro Takarada

Koichi Higuchi

Toshiaki Ihara

Tetsuro Yamada

Manabu Maeda

Toru Mizusaki

Yoshitaka Koshiro

Hiroshi Nakayama

Tatsuya Kanagawa

Mitsuaki Negishi

Shinji Kadoshima

Takashi Ohkawara

Ichiro Tanii

Yuzo Morioka

Hiroyuki Koga

Mika Kawakita

Kazuyuki Negishi

Sinobu Sato

Masafumi Kikuchi

Akio Koyama

Usaburo Yano

Takahito Nakase

Kazuaki Yamamoto

Hiroyuki Kume

Osamu Uchida

Satoru Uno

Masayuki Nakanishi

A rubber composition which contains (A) an organosilicon compound represented by formula (1) and gives a cured object satisfying desired fuel (or power)-saving tire properties. (Rrepresents an alkyl or aryl group, Rrepresents an alkyl or aryl group, e, f, and g each indicate a number larger than 0 and satisfy g/(e+f+g)<0.05, and m is an integer of 1-3.)

Rubber composition and organosilicon compound

An organopolysiloxane compound represented by average structural formula (1) is capable of imparting an electron beam curable resin with high antistatic properties, while having excellent antistatic performance durability. (In the formula, Z represents a single bond or a group having a functionality of 2-20 and containing an organopolysiloxane structure; Rrepresents a single bond, or an unsubstituted or substituted alkylene group having 1-20 carbon atoms; each of Rand Rrepresents an unsubstituted or substituted alkyl group having 1-10 carbon atoms, or the like; Y represents a monovalent hydrocarbon group having a polymerizable reactive group; each of p and q represents a number of 1-10, with (p+q) being 2-20 in accordance with the valence of Z; and in cases where Z represents a single bond, p and q represent 1, Arepresents an anion and Qrepresents a cationic group that is represented by one of formulae (2)-(4) (wherein each one of R-Rrepresents an alkyl group having 1-20 carbon atoms, or the like; each one of R-Rrepresents a hydrogen atom or the like; and * represents a bonding hand).)

Organopolysiloxane compound, method for producing same, and antistatic agent and curable composition, each of which contains same

A rubber compounding ingredient containing (A) a compound having a blocked isocyanate group and a hydrolyzable silyl group, such as an organosilicon compound having the following formula (1): wherein Ris each independently an alkyl group having 1 to 8 carbon atoms, L is a divalent linking group, X is —O— or —NR—, Z is a hydrogen atom or a monovalent organic group, Ris a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or a group capable of bonding to Z to form a ring structure, and m is an integer of 1 to 3.

Rubber compounding ingredient and rubber composition

In a heat-shielding film formed of addition-curing silicone resin containing organopolysiloxane, organopolysiloxane includes the combination of a plurality of units including at least a RSiOunit (a T unit), a RRSiOunit (a D unit), and a RRRSiOunit (a M unit) (in each unit, Rto Ris aliphatic hydrocarbon or hydrogen), and the molar ratio of the T unit, the D unit, and the M unit among all structural units is T:33.3 mol % to 71.4 mol %, D:11.1 mol % to 42.9 mol %, and M:7.0 mol % to 42.9 mol %.

Addition-curing silicone resin for producing heat-shielding film, method for forming heat-shielding film on inner surface of combustion chamber of engine by means of addition-curing silicone resin, heat-shielding film, and heat shielding method for reducing or preventing heat dissipation from combustion chamber of engine to outside by means of heat-shielding film

The present invention relates to a multilayer laminated product which at least contains a layer formed of an acrylic resin composition containing an acrylic resin as a main component, and a specific terminally-modified polycarbonate resin. Moreover, the multilayer laminated product of the present invention has an excellent releasability and low frictional properties.

Acrylic resin composition and moldings in which said composition is used

There is disclosed a polycarbonate and polysiloxane block copolymer includes 1 to 50 percent by mass of a siloxane portion derived from a polysiloxane block represented by the following formula (I) and 50 to 99 percent by mass of a carbonate portion derived from a polycarbonate block represented by the following formula (II). There can be provided a novel polycarbonate and polysiloxane block copolymer capable of readily imparting excellent flame retardance, and a flame retardant resin composition. 

Polycarbonate and polysiloxane block copolymer and flame retardant resin composition

According to the present invention, a contact lens material being excellent in oxygen permeability and transparency, being capable of undergoing injection molding, having no water content and having flexibility is provided. The present invention also relates to a contact lens gel material having excellent oxygen permeability and transparency. Particularly, the present invention relates to a contact lens material comprising a polycarbonate resin derived from a bisphenol compound (A), a polysiloxane-substituted bisphenol compound (B) and a compound forming a carbonic acid ester.

Contact lens material

According to the present invention, a contact lens material being excellent in oxygen permeability and transparency, being capable of undergoing injection molding, having no water content and having flexibility, as well as a contact lens gel material having excellent oxygen permeability and transparency can be provided. The present invention relates to a contact lens material comprising a polycarbonate resin derived from at least two compounds among compounds represented by a general formula (A), a general formula (B) and a general formula (C), a highly polar molecular weight control modifier (chain terminator) and a compound forming a carbonic acid ester, wherein the compound of the general formula (A) is essentially comprised, and to a production method thereof.

Method for producing polycarbonate material having excellent solubility and affinity, and contact lens material comprising the same

An asymmetric membrane contains a porous layer and a dense layer adjacent thereto. The porous layer and the dense layer are formed of a polymeric material. The porous layer and/or dense layer contains a filler. The amount of the filler is 11 parts by mass or more per 100 parts by mass of the polymeric material contained in the asymmetric membrane.

Asymmetric membrane and air-conditioning system using the same

A permselective material has a polymer having an organosiloxane skeleton and containing a dispersed solid additive. When oxygen and nitrogen are passed through a membrane having the permselective material, the relation between the permeability coefficients [cm&#xb7;cm&#xb7;sec&#xb7;cm&#xb7;cmHg] of oxygen and nitrogen at a temperature of 23&#xb1;2&#xb0; C. under a pressure difference of 1.05 atm to 1.20 atm through the membrane is expressed by Formula (1): where P(O) denotes the permeability coefficient of oxygen, while P(N) denotes the permeability coefficient of nitrogen.

Selectively permeable material, method for producing selectively permeable membrane structure, selectively permeable membrane structure, and air conditioning system

Provided is a siloxane compound having one end modified with at least one (meth)acrylic group via a spacer, the spacer being a straight chain having at least three ether bonds or a branched structure having at least one ether bond. The (meth)acrylic-modified siloxane compound is added to a heat or photo-curable composition, which cures into a product exhibiting water repellent, antifouling, lubricating and other properties inherent to siloxane.

(meth)acrylic-modified siloxane compounds

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

The present invention provides an electrophotographic photoreceptor having excellent lubricity and abrasion resistance by using a novel polycarbonate resin comprising structural units having a polysiloxane chain in the shape of grafts as represented by the following general formula (1) with a viscosity-average molecular weight of 12,000 to 100,000 as a binder resin for a charge transport layer of a electrophotographic photoreceptor.  wherein Rto Reach independently represents hydrogen, fluorine, chlorine, bromine, iodine, an alkyl group, an aryl group, an alkoxy group or an aralkyl group. Rrepresents an alkylene group. Y represents a polysiloxane chain.

Polycarbonate resin, process for producing the same and electrophotographic photoreceptor using the same

A novel dilatant fluid which keeps fluid state within a broad temperature range, is excellent in storage stability, has large mechanical strength and shows large changing quantity of viscosity resistance accompanied by the increase of shear stress. It was found that excellent dilatancy is expressed markedly specifically in a composition comprising (B) from 0.5 to 100 parts by weight of a particle dispersing agent and (C) from 5 to 1,000 parts by weight of a silicone medium, based on (A) 100 parts by weight an inorganic fine particle having a primary particle size of from 2 nm to 30 &#x3bc;m.

Dilatant fluid composition

A dimethylpolysiloxane composition comprising at least two dimethylpolysiloxanes selected from dimethylpolysiloxanes represented by formula (1) or formula (2),wherein m is an integer with 0&#x2266;m&#x2266;10 and n is an integer with 3&#x2266;n&#x2266;10, one of said at least two dimethylpolysiloxanes is dodecamethylpentasiloxane contained in an amount of 15 to 95 wt % based on a total weight of the composition, and the composition has a moisture content of at most 50 ppm based on the total weight of the composition.

Dimethylpolysiloxane composition

Growing community of inventors

Annaka, Japan

Masahiko Minemura