Chisso Corporation

Jnc Corporation

Chisso Petrochemical Corporation

Nobumasa Ootake

Kazuhiro Yoshida

Kenya Ito

Mikio Yamahiro

Hisao Oikawa

Kenichi Watanabe

Masami Tanaka

Yoshinobu Tsujii

Takeshi Fukuda

Kohji Ohno

Yasuhiro Yamamoto

Yoshitaka Morimoto

Koji Ohguma

Yasuhito Yamaryo

Jyun-ichi Inagaki

Nobuyuki Ootsuka

Takashi Katoh

Teruaki Hayashida

Koichi Ayama

Takayuki Hattori

Keizo Iwatani

Hideshi Satake

Keizou Iwatani

Hisaoi Oikawa

A polysiloxane represented by the formula (1) or (2): where R, R, R, m and n are defined in the specification.

Polysiloxane compound and method of producing the same

A polymer represented by Formula (7): wherein all variables are defined in the specification, including Pwhich is a polymer chain obtained by polymerizing an addition-polymerizable monomer, which makes it possible to control the structure of the polymer as a molecular aggregate.

Polymer obtained by addition-polymerization initiated by a silicon compound

The present invention provides a silicon compound represented by Formula (1) and a polymer obtained by using the same, and this makes it possible not only to obtain an organic-inorganic composite material having a distinct structure but also to control the structure of the above polymer as a molecular aggregate. wherein Ris a group independently selected from hydrogen, alkyl having a carbon atom number of 1 to 40, substituted or non-substituted aryl and substituted or non-substituted arylalkyl; in this alkyl having a carbon atom number of 1 to 40, optional hydrogens may be substituted with fluorine, and optional &#x2014;CH&#x2014; may be substituted with &#x2014;O&#x2014;, &#x2014;CH&#x2550;CH&#x2014;, cycloalkylene or cycloalkenylene; in alkylene in this arylalkyl, optional hydrogens may be substituted with fluorine, and optional &#x2014;CH&#x2014; may be substituted with &#x2014;O&#x2014; or &#x2014;CH&#x2550;CH&#x2014;; and Ais a group having an &#x3b1;-haloester group.

Silicon compounds

A production process for a silicon compound represented by Formula (6), characterized by reacting a compound represented by Formula (4) with a compound represented by Formula (5): wherein all of the variables are defined in the specification.

Production process for a silicon compound

The object of the present invention is to provide a new kind of silicon compound having an ester-type organic functional group and a new method for providing a T-silsesquioxane compound having a hydroxyl group by using said silicon compound as the starting material. A silicon compound represented by formula (1) is obtained through the production process characterized by using a silicon compound represented by formula (2). wherein:

Silicon compound and a production process for silicon compound

The present invention provides a novel organosilicon compound and polysiloxane which are useful as electronic materials, optical materials, coating materials, sealing materials and catalyst carriers and which can be used as additives for improving various physical properties such as flame retardancy, heat resistance, weatherability, light resistance, electric insulating property, a surface characteristic, hardness, a mechanical strength and a chemical resistance of a polymer material. That is, the present invention relates to an organosilicon compound represented by Formula (1) and polysiloxane comprising the above organosilicon compound as a monomer: 

Organosilicon compound and production process for the same, and polysiloxane and production process for the same

The present invention provides such a three-dimensional ladder polymer that has, as a main chain, a silsesquioxane skeleton having a structure of the cage structure of octasilsesquioxane with two broken corners. The polymer of the invention is a polymer obtained by using a silsesquioxane derivative represented by formula (1-0). Reach represents hydrogen, alkyl, cycloalkyl, aryl or arylalkyl, Reach represents chlorine, a group defined as similar to R, or a group having &#x2014;CN, X independently represents hydrogen, chlorine, a group defined as similar to R, or a group having one of &#x2014;CH&#x2550;CH&#x2014;, &#x2014;C&#x2261;C&#x2014;, &#x2014;OH, &#x2014;COOH, &#x2014;COO&#x2014;, 2-oxapropane-1,3-dioyl, oxiranyl, oxiranylene, oxetanyl, oxetanylene, 3,4-epoxycyclohexyl, &#x2014;SH, &#x2014;NCO, &#x2014;NH&#x2014; and &#x2014;NH; and at least two of X each is a reactive group. 

Polymer obtained by using silsesquioxane derivative

A varnish for forming a liquid crystal alignment layer is prepared by formulating a polymer obtained by using a silsesquioxane derivative represented by the formula (1), and a solvent.  In the formula (1), R independently represents an unsubstituted phenyl, cyclopentyl, cyclohexyl, or t-butyl group, and Yindependently represents a group selected from the following formulae (a-1) to (a-6). 

Varnish for forming liquid crystal alignment layer and liquid crystal display element using the same

The present inventors have obtained a PSQ derivative of a completely condensed type into which a functional group is readily introduced by using a novel PSQ derivative of an incompletely condensed type in which four alkaline metal atoms are bonded to silsesquioxane of a cage type having eight Si's. The above silsesquioxane derivative is represented by Formula (1). A silsesquioxane derivative to which alkaline metal atoms are bonded is represented by Formula (2). In Formula (1) and Formula (2), R is a group selected from alkyl, aryl and arylalkyl; Y is a group represented by Formula (a) or Formula (b); and M is a monovalent alkaline metal atom. X in Formula (a) and Formula (b) is hydrogen, halogen, a hydroxyl group or a monovalent organic group, and Z is &#x2014;O&#x2014;, &#x2014;CH&#x2014; or a single bond. The preferred organic group is a functional group or a group having a functional group.

Silsesquioxane derivative and production process for the same

The present invention is a polymer obtained by using a silsesquioxane derivative represented by formula (1-0). In the formula Reach independently represents hydrogen, alkyl, aryl or arylalkyl, and Y each represents a group represented by formula (a) or formula (b). In each of formula (a) and formula (b), at least one of X represents hydrogen, chlorine or a group having one of &#x2014;CH&#x2550;CH&#x2014;, &#x2014;C&#x2261;C&#x2014;, &#x2014;OH, &#x2014;COOH, &#x2014;COO&#x2014;, 2-oxapropane-1,3-dioyl, oxiranyl, oxiranylene, oxetanyl, oxetanylene, 3,4-epoxycyclohexyl, &#x2014;SH, &#x2014;NH&#x2014; and &#x2014;NH, and in formula (b), Z represents &#x2014;O&#x2014;, &#x2014;CH&#x2014; or a single bond. 

Polymer obtained with silsesquioxane derivative

A large part of conventional organic-inorganic composite materials is obtained by mechanical blending silsesquioxanes with organic polymers, and therefore it has been very difficult to control the structure thereof as the molecular aggregate of the composite materials. An object of the present invention is to provide a novel silicon compound having a living radical polymerization-initiating ability for an addition-polymerizable monomer and a polymer obtained using the same to thereby solve the problem described above regarding the conventional organic-inorganic composite materials. The present inventors have found that a novel silsesquioxane derivative to which a group having an ability to initiate polymerization of a monomer is useful as means for solving the problem described above. That is, the silsesquioxane derivative of the present invention is represented by Formula (1): wherein Ris hydrogen, alkyl, aryl or arylalkyl; Rand Rare alkyl, phenyl or cyclohexyl; and A is a group having an ability to initiate polymerization of a monomer.

Silicon compound

Since the majority of conventional organic/inorganic composite materials are obtained by mechanical blending of a silsesquioxane and an organic polymer or other means, it was extremely difficult to control the structure of the composite as a molecular agglomerate. In order to solve such a problem, the invention is to provide a silicon compound represented by Formula (1). This novel silicon compound has a living radical polymerization initiating ability for addition polymerizable monomers of a wide range. In Formula (1), Ris hydrogen, an alkyl, an aryl, or an arylalkyl; Ris an alkyl, phenyl, or cyclohexyl; and A is a group having a polymerization initiating ability for addition polymerizable monomers 

Organosilicon compound

An optical waveguide is produced by using a polymer obtained by using a silsesquioxane derivative represented by the formula (1-0).  In the formula (1-0), Rindependently represents 

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Chiba, Japan

Nobumasa Ootake