Mitsubishi Gas Chemical Company, Inc.

Yoshihisa Arai

Tomoyuki Yui

Masamichi Mizukami

Masahiro Johno

Hidefumi Harada

Takuo Ohshida

Hiroaki Ohgi

Takehiko Isobe

Hiroshi Mineta

Kikuo Furukawa

Toshio Watanabe

Yoshihiro Gocho

Takahiro Matsumoto

Minoru Kakuda

Provided are an adamantane derivative represented by the following formula (1), a method for producing the same, a polymer containing an acrylate compound having the adamantane structure represented by formula (1) in a repeat unit, and a functional resin composition which contains the polymer, has excellent alkali developability and substrate adhesiveness, and can improve the resolution and the line edge roughness as a chemically amplified resist sensitive to far-ultraviolet rays represented by KrF excimer laser light, ArF excimer laser light, Fexcimer laser light or EUV without spoiling fundamental properties thereof as a resist such as pattern forming properties, dry etching resistance, heat resistance and the like. In the formula, Rthrough R, which may be the same or different, each represent a hydrogen atom, an alkyl group having a carbon number of 1 to 3, or a halogen-containing alkyl group; Rthrough R, which may be the same or different, each represent an alkyl group having a carbon number of 1 to 3 or a halogen-containing alkyl group; X, which may be the same or different, represents a hydrogen atom, an alkyl group having a carbon number of 1 to 3, or a alkoxy group having a carbon number of 1 to 3; and n represents 14.

Adamantane derivative, method for producing same, polymer using same as starting material, and resin composition

The present invention provides an efficient production method suitable to industrial-scale production not requiring column purification for adamantyl (meth)acrylates having an adamantine skeleton having utility in crosslinked resins, optical fibers, optical waveguides, optical disc substrates and other optical materials.

Method for producing adamantyl (meth)acrylates

Production of 2-hydrocarbyl-2-adamantyl acrylate compounds

Process for producing dialkyl carbonate

A process for separation between dialkyl carbonate and alkyl carbamate which comprises adding an aromatic hydroxy compound to a liquid comprising alkyl carbamate having an alkyl group having 3 to 6 carbon atoms and dialkyl carbonate having alkyl group having 3 to 6 carbon atoms to obtain a mixed liquid, and distilling the mixed liquid thus obtained in a distillation column to obtain a mixture comprising the dialkyl carbonate and the aromatic hydroxy compound from a top section of the distillation column and a liquid comprising the alkyl carbamate from a bottom section of the distillation column.

Process for separation between dialkyl carbonate and alkyl carbamate

A process for producing a dialkyl carbonate which comprises reacting at least one member selected from the group consisting of urea and alkyl carbamate with alcohol in the presence of both a catalyst and a high boiling point organic compound having a boiling point of 180.degree. C. or above.

A process for producing diaryl carbonate which comprises (A) a step for producing dialkyl carbonate represented by the general formula RO--CO--OR by reacting urea with alkyl alcohol represented by the general formula ROH, (B) a step for producing both alkyl aryl carbonate represented by the general formula RO--CO--OAr and diaryl carbonate represented by the general formula ArO--CO--OAr by reacting dialkyl carbonate produced in the above step (A) with an aromatic hydroxy compound represented by the general formula ArOH, and (C) a step for producing diaryl carbonate represented by the general formula ArO--CO--OAr by allowing to conduct disproportionation reaction of unreacted alkyl aryl carbonate produced in the above step (B), wherein R shows an alkyl group and Ar shows a non-substituted phenyl group or a phenyl group substituted by alkyl group, alkoxy group, aryl group, aryloxy group or halogen.

Process for producing diaryl carbonate

Anti-ferroelectric liquid crystal substances which are represented by the formula (1): ##STR1## wherein R is a straight chain alkyl group having 6 to 10 carbon atoms,

Liquid crystal display devices and liquid crystal substances therefor

An anti-ferroelectric liquid crystal composition consisting essentially of an anti-ferroelectric liquid crystal (A) and a ferrielectric liquid crystal (B) shows a low threshold voltage so that the driving voltage can be decreased, and the composition can give a liquid crystal display device utilizing a fast response time or switching among tristabile states, a distinct threshold voltage characteristic and excellent memory performance.

Anti-ferroelectric liquid crystal composition and liquid crystal display

A liquid crystal compound represented by formula (I) ##STR1## wherein R denotes a linear alkyl group having 6 to 14 carbon atoms, X denotes a single bond or an oxygen atom, K and L are independently 1 or 2, n is an integer of 3 to 8, and C* denotes an asymmetric carbon atom. and a liquid crystal display device formed therefrom.

Liquid crystal compound and liquid crystal display device

A liquid crystal compound represented by formula (I), ##STR1## wherein A represents --C.sub.3 H.sub.7, --C.sub.4 H.sub.9 or --C.sub.8 H.sub.17 ; when A is --C.sub.3 H.sub.7, m is an integer of 8, 10, 12 or 14; and when A is --C.sub.4 H.sub.9 or --C.sub.8 H.sub.17, m is an integer of 7 to 14, said compound having an antiferroelectric phase.

An antiferroelectric liquid crystal compound which is a compound represented by ##STR1## wherein R denotes a linear aliphatic alkyl group having 6 to 14 carbon atoms; A denotes a single bond or an oxygen atom; X and Y independently denote a hydrogen atom or a fluorine atom but they are not hydrogen atoms at the same time; h and i are independently 1 or 2; m is an integer of 3 to 10; Z denotes CH.sub.3, C.sub.2 H.sub.5 or CF.sub.3 ; k is 0 or an integer of 5 to 8; l is 0 or 1; n is an integer of 1 to 6; W denotes CH.sub.3 or CF.sub.3 ; when W is CH.sub.3, p and q are both 0 and r is 8; when W is CF.sub.3, p is 5 to 8, q is 1 and r is 1 to 4; and C* denotes an asymmetric carbon atom, and a liquid crystal display device using same.

Antiferroelectric liquid crystal composition comprising at least one of antiferroelectric liquid crystal substances, and at least one of optically active substances.

Liquid crystal composition

A novel anti-ferroelectric liquid crystal of the formula (I), ##STR1## wherein: is an integer of 3 to 8,

Anti-ferroelectric liquid crystal and liquid crystal display device

A liquid crystal compound represented by formula (II) ##STR1## wherein R denotes a linear alkyl group having 6 to 14 carbon atoms, X denotes a single bond or an oxygen atom, K and L are independently 1 or 2, m is an integer of 5 to 7, n is an integer of 1 to 4, and C* denotes an asymmetric carbon atom, said compound having an antiferroelectric phase. This liquid crystal compound is produced by using a novel optically active alcohol represented by formula (I) ##STR2##

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Tsukuba, Japan

Yoshihisa Arai