An isocyanate group-containing organosilicon compound shown by the following general formula (1). This provides an organosilicon compound having only one isocyanate group, which is highly reactive, in a molecule and having two or three organopolysiloxane groups per molecule. In the formula (1), each R.sup.1 is identical to or different from one another, represents a monovalent alkyl group having 1 to 10 carbon atoms or a phenyl group, and has no aliphatic unsaturated group; each R.sup.2 is identical to or different from one another, represents a monovalent alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group, a monovalent aryl group having 6 to 10 carbon atoms, or a monovalent aralkyl group having 7 to 10 carbon atoms, and has no aliphatic unsaturated group; “a” represents 0 or 1; and “b” represents an integer of 0 to 300.

##STR00001##

Provided are: a new sulfonium salt highly photosensitive to active energy ray, in particular, i-line or h-line; and a new photoacid generator which is highly photosensitive to i-line or h-line, and comprises a sulfonium salt that is highly soluble in a solvent and a cationically polymerizable compound such as an epoxy compound, and has excellent storage stability in the formulation. The present invention pertains to a sulfonium salt represented by general formula (1), and a photoacid generator comprising said sulfonium salt.

##STR00001##

An object of the present invention is to develop a protecting group, which can prevent solidification or insolubilization of a compound by protecting a functional group to achieve easy separation and purification after a reaction. A diphenylmethane compound represented by general formula (1): ##STR00001## wherein Y represents —OR.sup.19 (wherein R.sup.19 represents a hydrogen atom or an active ester-type protecting group), —NHR.sup.20 (wherein R.sup.20 represents, for example, a hydrogen atom, a C.sub.1-6 linear or branched alkyl group, or an aralkyl group, at least one of R.sup.1 to R.sup.10 represents a group represented by formula (2):
—O—R.sup.11—X-A  (2) and the others each independently represent a hydrogen atom, a halogen atom, a C.sub.1-4 alkyl group, or a C.sub.1-4 alkoxy group; R.sup.11 represents a C.sub.1-16 linear or branched alkylene group; X represents O or CONR.sup.21 (wherein R.sup.21 represents a hydrogen atom, or a C.sub.1-4 alkyl group; and A represents, for example, a group represented by formula (3). ##STR00002##

The present invention relates to the functionalisation of specific 1,3-alpha-dienes. These functionalized 1,3-alpha-dienes are important intermediates in organic synthe-sis (especially in the synthesis of carotenoids, vitamin A and/or vitamin A derivatives).

Provided are: an azepan derivative represented by general formula (I) and a pharmaceutically acceptable salt thereof (in the formula: R.sup.1 represents a hydrogen atom, a C.sub.1-6 alkyl group which may have a substituent, etc.; R.sup.2 and R.sup.3 are the same as or different from each other, and represent a hydrogen atom, a C.sub.1-6 alkyl group which may have a substituent, etc.; R.sup.4 and R.sup.5 are the same as or different from each other, and represent a hydrogen atom, a C.sub.1-6 alkyl group which may have a substituent, etc.; R.sup.6 represents a hydrogen atom, a C.sub.1-6 alkyl group which may have a substituent, etc.; R.sup.7 and R.sup.8 are the same as or different from each other, and represent a hydrogen atom, a C.sub.1-6 alkyl group which may have a substituent, etc.; R.sup.9 and R.sup.10 are the same as or different from each other, and represent a hydrogen atom, a C.sub.1-6 alkyl group which may have a substituent, etc.; R.sup.11 represents a hydrogen atom, a C.sub.1-6 alkyl group which may have a substituent, etc.; A and B differently represent a methyl group, a carbonyl group, etc.; and X represents a nitrogen atom or an N-oxide.).

A curable composition for an electronic device, includes a curable material; and an oxide-containing complex; wherein the oxide-containing complex includes i) an oxide core and ii) an organic group chemically bound to an atom on a surface of the oxide core, the organic group includes a) a curable group reactable with the curable material and b) a linking group linking the atom on a surface of the oxide core to the curable group, and the oxide core includes an aluminum oxide, a silicon oxide, or a combination thereof.

A method of preparing an alkoxy-functional organosilicon compound is provided. The method comprises reacting (A) an initial organosilicon compound and (B) an alcohol component in the presence of (C) a catalyst, thereby preparing the alkoxy-functional organosilicon compound. The initial organosilicon compound (A) comprises at least one alkoxysilyl group. The alcohol component (B) comprises an organic alcohol. The catalyst (C) comprises (C1) an ammonium carboxylate compound or (C2) a titanate compound. A reaction product comprising an alkoxy-functional organosilicon compound prepared in accordance with the method, and a composition comprising the reaction product, are also provided. The alkoxy-functional organosilicon compound, and the reaction product and composition comprising the same, are prepared in increased purity under functional group-tolerant conditions.

A mixture of an organosilicon compound represented by average structural formula (2), wherein the area percentage occupied by an organic compound represented by structural formula (1) in GPC is from 5% to 95%, provides a rubber composition which exhibits excellent dispersibility of an inorganic filler and enables the achievement of a crosslinked cured product that has improved wear resistance, rolling resistance and wet grip performance. This rubber composition enables the achievement of a desired low fuel consumption tire.

(R.sup.1O).sub.3-p(R.sup.2O).sub.pSi—(CH.sub.2).sub.j—S.sub.y—(CH.sub.2).sub.k—Si(OR.sup.2).sub.q(OR).sub.3-q  (2):

(In the formula, R.sup.1 represents an alkyl group having from 1 to 3 carbon atoms; R.sup.2 represents an alkyl group having from 4 to 8 carbon atoms; p represents a number from 0 to 3; q represents a number from 0 to 3; j represents a number from 1 to 10; k represents a number from 1 to 10; and y represents a number from 2 to 8.)

(R.sup.1O).sub.3-m(R.sup.2O).sub.mSi—(CH.sub.2).sub.h—S.sub.x—(CH.sub.2).sub.i—Si(OR.sup.2).sub.n(OR.sub.1).sub.3-n  (1):

(In the formula, R.sup.1 and R.sup.2 are as defined above; m represents an integer from 0 to 3; n represents an integer from 0 to 3; h represents an integer from 1 to 10; i represents an integer from 1 to 10; x represents an integer from 2 to 8; and (m+n) represents an integer from 3 to 6.)

Provided are a composition for encapsulating an organic light emitting element and an organic light emitting element display device manufactured therefrom, the composition comprising: (A) a non-silicone-based photocurable multifunctional monomer; (B) a silicone-based photocurable multifunctional monomer; (C) a non-silicone-based photocurable monofunctional monomer; (D) a silicone-based photocurable monofunctional monomer; and (E) an initiator, wherein the silicone-based photocurable multifunctional monomer (B) is represented by chemical formula 1.

A preparation method of functional silanes comprises: substance A and substance B are added in a three-necked bottle and a certain amount of solvent is added; the resultant mixture is stirred for 0.5-24 h in the presence of catalyst under an atmosphere of argon, resulting in the crude product; after removing the remaining solvent and catalyst, the residual product is purified by chromatographic column to obtain functional silanes; the substance A is an alkene-containing silane and the substance B is an alcohol; functional silanes with various structures can be prepared, and their structures can be controlled by regulating the ratio of substance A and substance B, thereby providing ideas for the preparation of different silanes and the structural design of silane coupling agents.