Sumitomo Chemical Company, Limited

Ryu Takeko

Akira Kawamura

Yoshihiro Harada

Sayaka Sakurai

Atsushi Higo

Yoshinobu Nakamura

Atsushi Hozumi

Yasuharu Shimazaki

Tomonori Miyamoto

Chihiro Urata

Syuji Fujii

Tomo Iwata

The object of the present invention is to attain both water/oil repellency and hardness. The transparent film of the present invention comprises: a polysiloxane backbone; and a first hydrocarbon chain-containing group bonded to a part of silicon atoms forcing the polysiloxane backbone, wherein the thickness of the transparent film is not less than 6 nm and not more than 50 nm.

Transparent film

The object of the present invention is to attain water repellency as well as the heat resistance and the light resistance. the transparent film of the present invention comprises: a polysiloxane backbone; and a trialkylsilyl containing molecular chain bonded to a part of silicon atoms forming the polysiloxane backbone, wherein alkyl groups in the trialkylsilyl containing molecular chain may be replaced by fluoroalkyl groups, and the transparent film satisfies at least one of the relationships of:()/&#xd7;100(%)&#x2265;&#x2212;27(%); and()/&#xd7;100(%)&#x2265;&#x2212;15(%),

The present invention aims to provide a water-repellant and oil-repellant coating composition which has good water-repellant and oil-repellant characteristics and further improves abrasion resistance, and a transparent film produced therefrom. The present invention is a water-repellant and oil-repellant coating composition comprising a first organic silicon compound (A) in which a fluorine-containing group having a perfluoroalkyl group or a perfluoropolyether group on the free end side thereof and a hydrolyzable group are bonded to a silicon atom thereof, and a second organic silicon compound (B) that is a hydrolyzable silane oligomer or a compound in which a carbon fluoride-containing group and a hydrolyzable group are bonded to a silicon atom thereof and that has a vapor pressure at 100&#xb0; C. of 1 atm or less.

Water-repellant and oil-repellant coating composition and transparent film

There are provided a granular adhesive agent including a core portion and a shell portion, wherein the core portion including an adhesive composition and the shell portion is formed from solid particles, and a method for producing a granular adhesive agent. It is preferred that the solid particles include fine particles with a number average particle diameter of less than or equal to 500 &#x3bc;m as the main component. The granular adhesive agent according to the present invention is excellent in handling properties.

Granular adhesive agent

An acrylic resin composition containing the following acrylic resins (1) and (2): 

Acrylic resin composition

An optical laminate comprising an anti-reflection film, polarizing film, adhesive layer, glass cell for liquid crystal display, adhesive layerand polarizing filmlaminated sequentially, wherein the ratio (B/A) of the maximum value B of the loss tangent of the adhesive layerto the maximum value A of the loss tangent of the adhesive layeris 1.1 or more. The maximum value of the loss tangent means the maximum value of loss modulus (E&#x2033;) storage modulus (E') (=tan &#x3b4;), each measured by heating the adhesive layer in a temperature range of &#x2212;70&#xb0; C. to 200&#xb0; C. at a temperature rising rate of 4&#xb0; C./min and a frequency of 1 Hz.

Optical laminate

To provide an adhesive comprising an acrylic resin (1), an acrylic resin (2), a silicone oligomer (3) and a crosslinking agent (4): wherein (wherein Rrepresents hydrogen atom or methyl group, and Rrepresents alkyl or aralkyl groups having 1 to 14 carbon atoms wherein hydrogen atom(s) of the Rmay be substituted with alkoxy group having 1 to 10 carbon atoms), and (wherein Rand Rrepresent alkyl group or phenyl group, X and Y represent hydrogen atom, optionally substituted alkyl group, optionally substituted phenyl group, optionally substituted alkoxy group, optionally substituted phenoxy group, optionally substituted aralkyl group, optionally substituted aralkyloxy group, vinyl group, vinyloxy group, 1,2-epoxycyclohexyl group, 1,2-epoxycyclohexyloxy group, styryl group, styryloxy group, methacryloyloxy group, amino group, ureido group, mercapto group or isocyanate group).

Growing community of inventors

Osaka, Japan

Ryu Takeko