Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo

Ueno Fine Chemicals Industry, Ltd.

Sharp Kabushiki Kaisha Corporation

Taoka Chemical Company, Limited

Kabushiki Kaisha Ueno Seiyaku Oyo K.

Hiroyuki Kato

Motoki Asahara

Ryuzo Ueno

Masaya Kitayama

Kiichi Kometani

Hiroaki Terada

Kazunori Ueda

Tetsuhide Sawada

Shinya Ueda

Shinji Asami

Takashi Utsumi

Tomoyuki Saito

Hitoshi Tsuchiya

Hiroto Uchida

Hisanari Fujiwara

Nobutaka Izumichi

Satoru Yonezawa

Katsuhiro Fujii

Seiji Kanbara

Kohta Fukui

Suguru Hata

Ryoichi Otsuka

Yuki Numata

Toshiyuki Goto

In a heating cooking device, a machine chamber is provided adjacent to a heating chamber for housing a food product. An air supply port is provided in a partition wall that separates the heating chamber and the machine chamber. An air supply fan is provided in the machine chamber, for supplying air to the heating chamber through the air supply port. An air supply damper is provided in the machine chamber, for opening and closing the air supply port. A control unit drives the air supply fan and brings the air supply damper into an open state during high-frequency heating of the food product. The control unit brings the air supply damper into a closed state simultaneously with completion of high-frequency heating of the food product or immediately before or immediately after the completion.

Heating cooking device

A cooking device has a casing, a heating chamberprovided in the casing, an exhaust tubefor guiding exhaust from inside of the heating chamberthrough an electric component chamberin the casingto front face side, and a dew receiving containerthat is provided on front face side of the casingand that receives and diffuses the exhaust from the exhaust tubeto outside of the casing

Cooking device

A method for producing a fluorene derivative by reacting fluorenone with a phenol or a phenoxyalcohol in the presence of an acid catalyst includes: adding an alkali to an obtained reaction liquid containing a fluorene derivative; and concentrating a resultant mixture liquid without removing the alkali thus added and a reaction product of the alkali, thereby separating an unreacted phenol or unreacted phenoxyalcohol.

Method for producing fluorene derivative

The present invention provides a wholly aromatic liquid-crystalline polyester consisting of the repeating units represented by formulae (I), (II), (III) and (IV): wherein:

Wholly aromatic liquid-crystalline polyester

Provided is a liquid crystalline polymer composition comprising: 100 parts by weight of a LCP, and equal to or more than 0.01 and less than 1 part by weight of a low temperature softening inorganic glass filler whose softening temperature is equal to or less than 550&#xb0; C. The composition can provide a molded article which cause no or less blister formation upon reflow soldering using a lead-free solder.

Liquid crystalline polymer composition and molded article made of the same

The present invention provides a liquid-crystalline polyester blend, which is obtained by combining a liquid-crystalline polyester (A) and a liquid-crystalline polyester (B) such that the ratio by weight of (A)/(B) is 99/1 to 80/20: The liquid-crystalline polyester blend of the present invention exhibits excellent dielectric properties in high frequency regions as well as good impact strength and molding processability.

Liquid-crystalline polyester blend

The present invention provides a liquid-crystalline polymer blend which is obtained by combining liquid-crystalline polymer (A) which has a modulus of elongation of 20-32 GPa and a melting point measured by differential scanning calorimeter of 250-330&#xb0; C. and liquid-crystalline polymer (B) which has a melting point measured by differential scanning calorimeter of equal to or higher than 190&#xb0; C. and lower than 250&#xb0; C., wherein the weight ratio of said liquid-crystalline polymer (A) to said liquid-crystalline polymer (B) is in the range of from 50:50 to 90:10. The liquid-crystalline polymer blend and the liquid-crystalline polymer blend composition comprising the same exhibit good mechanical properties such as modulus of elongation and good molding processability at low temperatures. The liquid-crystalline polymer blend and the liquid-crystalline polymer blend composition of the present invention are suitable for producing welded articles with high joint strength.

Liquid-crystalline polymer blend and composition comprising the same

Provided is a liquid-crystalline polyester with good properties obtainable by subjecting a prepolymer consisting of the repeating units represented by formulae (I), (II), (III) and (IV): to heat treatment in a substantially solid state.

Wholly aromatic liquid-crystalline polyester and method for preparing the same

The present invention provides a liquid-crystalline polyester obtainable by a method comprising the steps of: (1) preparing a prepolymer consisting of the repeating units represented by formulae (I), (II), (III) and (IV): wherein, p, q, r and s represent relative molar proportions (mol %) of the repeating units in the liquid-crystalline polyester resin and satisfy the following formulae: 60&#x2266;p&#x2266;80, 10&#x2266;r&#x2266;20, 10&#x2266;q+s&#x2266;20, 0.05&#x2266;s/(q+s)&#x2266;0.3, p+q+r+s=100; and (2) heating the prepolymer in substantially solid state at 250-350&#xb0; C., provided that the liquid crystalline polyester has a deflection temperature under load of 280-340&#xb0; C., and a melt viscosity of 10-60 Pa&#xb7;s.

Liquid-crystalline polyester resin and method for producing it

A thermotropic liquid crystalline polymer, which is obtainable by copolymerizing a trifunctional hydroxynaphthalene carboxylic acid represented by the general formula (I) and/or reactive derivative thereof with other polymerizing monomer(s) wherein one of m and n is 1 and the other is 2, and a composition including the polymer are provided. The molded article obtained from the thermotropic liquid crystalline polymer or the composition has less anisotropy in mechanical strength and improved weld strength.

Thermotropic liquid-crystalline polymer

A cooking device includes a first waveguide portion to make a microwave emitted into a heating chamber propagate radially in the directions almost parallel with the bottom face of the heating chamber and to guide the microwave propagated in the almost parallel directions into the heating chamber, and a second waveguide portion to make the microwave guided into the heating chamber by the first waveguide portion further propagate radially in directions almost parallel with the bottom face and to guide the propagated microwave into the heating chamber.

The present invention provides a liquid-crystalline polyester resin which comprises monomer units derived from 2-hydroxy-3-naphthoic acid and/or 2-hydroxynaphthalene-3,6-dicarboxylic acid in an amount of 1-5000 mmol % based on the total monomer components of the resin and an alkaline metal compound in an amount of 10-3000 ppm as alkaline metal based on the total monomer components of the resin. The liquid-crystalline polyester resin of the present invention has good colorability, improved heat resistance and good mechanical properties.

Liquid-crystal polyester resin

A liquid crystal polyester resin comprising 1 to 500 mmol % of a recurring unit derived from 4-hydroxyisophthalic acid and/or salicylic acid as a comonomer and 10 to 5,000 ppm in terms of an alkali metal of an alkali metal compound. This resin has excellent colorability, improved heat resistance and high mechanical properties.

Liquid crystal polyester resin

An aromatic dicarboxylic acid composition, essentially consisting of (a) at least one aromatic dicarboxylic acid; (b) 1-3000 ppm of at least one compound selected from the group consisting of 6-formyl-2-naphthoic acid, 6-methoxycarbonyl-2-naphthoic acid and trimellitic acid; (c) 1-1000 ppm of at least one alkali metal and (d) 0-3000 ppm of at least one transition metal is provided. By employing the composition in manufacturing liquid crystalline polyester, LPCs with good coloring property and improved heat resistance as well as excellent mechanical property can be obtained. The present invention also provides a liquid crystalline polyester resin prepared by using the composition.

Aromatic dicarboxylic acid composition and liquid crystalline polyester resin made from the same

A process for manufacturing columnar crystals of 6-hydroxy-2-naphthoic acid comprising the steps of, dissolving crude 6-hydroxy-2-naphthoic acid product in an aqueous solvent, adding crystalline 3-hydroxy-2,7-naphthoic acid or columnar crystals as seed crystals, and cooling the mixture to precipitate the desired crystals. The present invention further provides columnar crystals of 6-hydroxy-2-naphthoic acid which have X-ray diffraction peaks 2&thgr; in 16.8-17.8 and/or 21.3-22.3.

Growing community of inventors

Kawanishi, Japan

Hiroyuki Kato