Nippon Kayaku Kabushiki Kaisha

Nippon Kayaku Co., Ltd

Sharp Kabushiki Kaisha Corporation

Pioneer Electronic Corporation

Other

National Institute of Advanced Industrial Science and Technology

Daisaku Matsunaga

Noriaki Onishi

Kunihiro Ichimura

Takeo Wakimoto

Hitoshi Nakada

Takashi Tamaki

Masanao Shinkai

Nobuaki Yamada

Hiroaki Ohno

Shuichi Kohzaki

Aya Miyazaki

Ryuji Murayama

Tohru Namiki

Toru Ozaki

Takao Aizawa

Mitsukuni Sumitani

Masanori Hashimoto

Christian Ruslim

Touru Ozaki

The present invention relates to a micropattern retardation element requiring no stretch processing and no extremely high positioning accuracy in cutting films, and the like, and having the retardation region controlled in width of a micron unit, and a producing method therefore. Said micropattern retardation element can be obtained by forming a liquid crystalline or non liquid crystalline polymer thin film layer having photoactive groups, on a substrate, and then, after orientation treatment in a micropattern form, forming a birefringence layer so as to contact with said polymer thin film layer, so that birefringence molecules of said birefringence layer are oriented according to orientation of photoactive groups in said thin film. Said retardation element is used in a three-dimensional display, and the like.

Micropattern retardation element

A polarized element formed by arranging a dichroic molecule in a micropattern form on a thin film layer of a liquid crystalline resin having a photoactive group irradiated by a linearly polarized light. The micropattern polarized element can be produced without need of a very high position-matching precision as sticking.

Micropattern polarized element

A photoinitiator is represented by general formula (I): ##STR1## where n is an integer of 1 or greater; A and B are each a trans cyclohexane ring or a benzene ring, the benzene ring being allowed to include a fluorine atom or a methyl group as a substituent, the benzene ring adjacent to a carbonyl group being allowed to include a fluorine atom or a methyl group as a substituent; p and q are each 0 or 1, p and q are not simultaneously 0; X is an alkyl group of C.sub.1 through C.sub.3 or hydrogen atom, Y is a methyl group, ethyl group or alkoxy group of C.sub.1 through C.sub.3, and Z is a methyl group, ethyl group, alkyl-substituted phenyl group or a group represented by general formula (II), Y and Z being allowed to bonded together to form a ring: ##STR2## where A, B, n, p and q are identical with those in general formula (I).

Photoinitiator photopolymerizable resin composition, polymer and liquid

A photopolymerizable resin material composition for forming a polymer used for a liquid crystal display apparatus includes at least one acrylate compound selected from the group consisting of a bifunctional acrylate compound having a fluorine substitution ratio .alpha. in the range of 0.1&lt;.alpha.&lt;0.8, a bifunctional acrylate compound having a fluorine substitution ratio .alpha. in the range of 0.ltoreq..alpha.&lt;0.8, a bifunctional acrylate compound having a fluorine substitution ratio .alpha. in the range of 0.1&lt;.alpha.&lt;0.8, a bifunctional acrylate compound having a fluorine substitution ratio .alpha. in the range of 0.1&lt;.alpha.&lt;0.8 and a bifunctional acrylate compound having a fluorine substitution ratio .alpha. in the range of 0.1&lt;.alpha.&lt;0.8 and a bifunctional acrylate compound having a fluorine substitution ratio .alpha. in the range of 0.1&lt;.alpha.&lt;0.8, and a photopolymerization delaying resin material.

Photopolymerizable resin material composition comprising fluorinated

The electroluminescent element of the present invention comprises a fluorescent substance layer containing a courmarinic or azacoumarinic derivative and a hole transport layer, both made of organic compounds and laminated on top of the other. The both layers are interposed between cathode and anode electrodes. It emits light efficiently at a high luminance upon application of a low voltage between the electrodes.

Electroluminescent element

Disclosed herein is an electroluminescent element which is constructed such that a fluorescent substance layer and a hole transport layer, both made of organic compounds and laminated on top of the other, are interposed between a cathode and an anode. The fluorescent substance layer is a thin film containing a bisstyryl derivative. It emits blue light efficiently at a high luminance upon application of a low voltage.

A 2-acylamino-5-halogenated-cinnamic acid derivative represented by the formula (III) which is useful as an intermediate for producing medicines and agricultural chemicals: ##STR1## wherein Ac represents a lower acyl group, R represents a hydrogen atom or a lower alkyl group, and X.sub.1 represents a halogen atom. This derivative is obtained by reacting a compound represented by the formula (I), ##STR2## wherein Ac and X.sub.1 are as defined above, and X.sub.2 represents a bromine or iodine atom, with acrylic acid or its ester represented by the formula (II),

2-acylamino-5-halogenated-cinnamic acid derivative and method for its

This invention relates to compounds which are valuable as a fluorescent brightener and a novel process for producing the same. The present invention is based on the following discoveries made by the inventors: In the presence of a palladium catalyst and a base at an elevated temperature, 1 mole of a compound of the formula,

Styryl compounds and process for producing the same

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Tokyo, Japan

Daisaku Matsunaga