Mitsubishi Gas Chemical Company, Inc.

Toray Industries, Inc.

Kentaro Ishii

Takafumi Oda

Shun Ogawa

Hisayuki Kuwahara

Ryoji Otaki

Shota Arakawa

Takahiko Sumino

Masashi Higasa

Shinichi Ayuba

Tomonori Kato

Tomomichi Kanda

Shingo Hiramatsu

Katsushige Yamada

Jun Mitadera

Kenji Sawai

Hideki Sawai

Takeshi Hirokane

Takashi Mimitsuka

Kenji Kouno

Shinichi Minegishi

Masayuki Nagai

Ken Morita

Takami Morishita

Tomoe Morishita

Hirokatsu Arai

A polyester resin composition containing a polyester resin and 1 to 500 ppm of ultramarine based on a total amount of the polyester resin composition, wherein the polyester resin contains dicarboxylic acid structural unit and diol structural unit, the diol structural unit contain structural unit derived from a diol having a cyclic acetal skeleton, and a content of the structural unit derived from a diol having a cyclic acetal skeleton is 1 to 60 mol % based on a total amount of the diol structural unit.

Polyester resin composition

A method of producing a chemical product includes cultivating microorganisms or culture cells in a fermentation tank; transferring a culture liquid from the fermentation tank to a membrane separation tank to filter the culture liquid through a separation membrane; and collecting a fermentation product from a filtration liquid as the chemical product while refluxing an unfiltered culture liquid that has not been filtered to be joined to the culture liquid on an upstream side of the membrane separation tank, wherein one portion of the culture liquid to be transferred from the fermentation tank is allowed to bypass the membrane separation tank depending on a pressure at a culture liquid flow-in side of the membrane separation tank.

Method of producing a chemical product

The production method for a polyolefin-based structure of the present invention produces a polyolefin-based structure from a mixed source material containing a polyolefin (A), an acid-modified polyolefin (B) and a gas barrier resin (C) using a molding machine, under the condition mentioned below. The molding machineis equipped with a single-screw extruder, a die head, and an adaptorfor feeding the mixed source material from the single-screw extruderto the die head. Am+10&#xb0; C.&#x2264;T&#x2264;Cm&#x2212;10&#xb0; C. (1), Cm&#x2212;30&#xb0; C.&#x2264;T&#x2264;Cm+30&#xb0; C. (2), Cm&#x2212;10&#xb0; C.&#x2264;T&#x2264;Cm+50&#xb0; C. (3), Cm&#x2212;30&#xb0; C.&#x2264;T&#x2264;Cm+30&#xb0; C. (4). Tis a cylinder temperature in a section corresponding to a supply zoneA and a compression zoneB, Tis a cylinder temperature in a section corresponding to a metering zoneC, Tis a temperature of an adaptor, Tis a temperature of a die head, Am is the melting point of the component (A), and Cm is the melting point of the component (C).

Method for producing a polyolefin structure

Disclosed is a polyamide resin composition, including: a polyamide (A) containing a diamine unit including 70 mol % or more of a p-xylylenediamine unit and a dicarboxylic acid unit including 70 mol % or more of a linear aliphatic dicarboxylic acid unit having 6 to 18 carbon atoms; and a filler (B), in which the polyamide (A) includes a polyamide having a phosphorus atom concentration of 50 to 1,000 ppm and a YI value of 10 or less in a color difference test in accordance with JIS-K-7105, and a content of the filler (B) is 1 to 200 parts by mass with respect to 100 parts by mass of the polyamide (A).

Polyamide resin composition

A multilayer injection molded article containing a layer (X) formed of a resin composition containing a polyamide compound (A) and a resin (B), and a layer (Y) containing a resin (C) as a major component, wherein the polyamide compound (A) contains from 25 to 50% by mol of a diamine unit, which contains a particular diamine unit in an amount of 50% by mol or more; from 25 to 50% by mol of a dicarboxylic acid unit, which contains a particular dicarboxylic acid unit in an amount of 50% by mol or more; and from 0.1 to 50% by mol of a particular constitutional unit.

Multilayer injection-molded body

An injection molded article containing a resin composition containing a polyamide compound (A) and a resin (B), wherein the polyamide compound (A) contains from 25 to 50% by mol of a diamine unit, which contains a particular diamine unit, in an amount of 50% by mol or more; from 25 to 50% by mol of a dicarboxylic acid unit, which contains a particular dicarboxylic acid unit, in an amount of 50% by mol or more; and from 0.1 to 50% by mol of a particular constitutional unit.

Injection-molded body

A multilayer injection molded article containing a layer (A) containing a polyamide resin (A), and a layer (B) containing a resin (B) as a major component, wherein the polyamide resin (A) contains from 25 to 50% by mol of a diamine unit, which contains a particular diamine unit in an amount of 50% by mol or more; from 25 to 50% by mol of a dicarboxylic acid unit, which contains a particular dicarboxylic acid unit in an amount of 50% by mol or more; and from 0.1 to 50% by mol of a particular constitutional unit.

Provided are a polyamide resin composition for inner layer of a delamination container which includes a laminate of at least two layers including an outer layer (1) composed of a thermoplastic resin (A) and an inner layer (2) composed of a polyamide resin composition and capable of being delaminated from the outer layer (1) to perform volume reduction deformation and in which an outside air introduction hole for introducing the outside air into between the outer layer (1) and the inner layer (2) is formed in the outer layer (1), the polyamide resin composition containing specified polyamide resin (a) and polyamide resin (b), having a tensile modulus of elasticity of 2,000 MPa or less at a temperature of 23&#xb0;C. and a humidity of 50% RH, and having a content of the polyamide resin (a) in the polyamide resin composition of 20 to 75% by mass; and a delamination container using the same as an inner layer.

Polyamide resin composition for inner layer of delamination container, and delamination container obtained using same

A polyamide resin composed of constitutional units derived from a diamine component 70 mol % or more of which is derived from p-xylylenediamine and constitutional unit derived from a dicarboxylic acid 70 mol % or more of which is derived from an aliphatic dicarboxylic acid having 6 to 18 carbon atoms. The polyamide resin has a number average molecular weight (Mn) of 10,000 to 50,000 and a degree of dispersion (weight average molecular weight/number average molecular weight=Mw/Mn) satisfying the following formula (1):1.5&#x2266;(Mw/Mn)&#x2266;6.0,wherein Mw and Mn are determined by gel permeation chromatography (GPC).

Polyamide resin

A method of producing polyamide by the direct polycondensation of a diamine component and a dicarboxylic acid component without using a solvent, such as water. The diamine component containing 70 mol % or more of p-xylylenediamine is added to a reaction system containing the dicarboxylic acid component under pressure while maintaining the reaction system in a molten state. After the addition of the diamine component, the pressure of the reaction system is reduced to atmospheric pressure over 50 min or more at a pressure falling speed of 1.0 MPa/h or less. By the production method, polyamide with a small molecular weight dispersion is easily produced.

Method for producing polyamide

A liquid-feeding chip for feeding a liquid utilizing the action of centrifugal force and gravity by rotating the chip around an axis of rotation, includes a first storage tank (-) into which the liquid can be introduced when rotation of the chip is stopped, and two or more liquid-feeding units arranged in a plurality of levels adjacent to each other, each liquid-feeding unit (U-U-U-) being composed of a first holding tank (---), a second holding tank (---) positioned in the direction of gravity with respect to the first holding tank, and a channel B (B-B-B-) which extends from the first holding tank in the direction of gravity and which connects the first holding tank and the second holding tank, the first holding tank at a first level being connected with a channel A (A-) which extends from the first storage tank toward an outer circumferential side. In the liquid-feeding chip, the adjacent liquid-feeding units are connected by a channel C (C-C-) which extends from the second holding tank of the liquid-feeding unit at an upper level to an outer circumferential side during rotation, and which is in communication with the first holding tank of the liquid-feeding unit at a lower level.

Liquid-feeding chip and analysis method

A polyamide composition containing a polyamide compound (A) and a transition metal compound (B), wherein the polyamide compound (A) contains: from 25 to 50 mol % of a diamine unit, which contains at least one diamine unit selected from the group consisting of an aromatic diamine unit represented by the following formula (I-1), an alicyclic diamine unit represented by the following formula (I-2) and a linear aliphatic diamine unit represented by the following formula (I-3), in an amount in total of 50% by mol or more; from 25 to 50 mol % of a dicarboxylic acid unit, which contains a linear aliphatic dicarboxylic acid unit represented by the following formula (II-1) and/or an aromatic dicarboxylic acid unit represented by the following formula (II-2), in an amount in total of 50% by mol or more; and from 0.1 to 50 mol % of a constitutional unit represented by the following formula (III): wherein m represents an integer of from 2 to 18, n represents from 2 to 18, Ar represents an arylene group, and R represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group.

Polyamide composition

The invention provides a polyamide having a dicarboxylic acid unit containing a decahydronaphthalenedicarboxylic acid unit in an amount of 60 mol % or more, and a diamine unit.

Polyamide

Disclosed is a flame-retardant polyamide resin composition, including: a polyamide (A) containing a diamine unit including 70 mol % or more of a p-xylylenediamine unit and a dicarboxylic acid unit including 70 mol % or more of a linear aliphatic dicarboxylic acid unit having 6 to 18 carbon atoms; an organic halogen compound (B) that serves as a flame retardant; an inorganic compound (C) that serves as a flame retardant aid; and an inorganic filler (D), in which the polyamide (A) includes a polyamide having a phosphorus atom concentration of 50 to 1,000 ppm and a YI value of 10 or less in a color difference test in accordance with JIS-K-7105, and a content of the organic halogen compound (B), a content of the inorganic compound (C), and a content of the inorganic filler (D) are 1 to 100 parts by mass, 0.5 to 50 parts by mass, and 0 to 100 parts by mass, respectively, with respect to 100 parts by mass of the polyamide (A).

Flame-retardant polyamide resin composition

A separation chip for separating an insoluble component from a suspension using centrifugal force by rotation, includes a suspension holding tank, a separation liquid holding tank, and an insoluble component holding tank arranged in order from an inner circumferential side during rotation, wherein the suspension holding tank and the insoluble component holding tank are connected to each other, the insoluble component holding tank and the separation liquid holding tank are connected to each other by a narrow portion, and in the insoluble component holding tank, a connecting portion with the suspension holding tank is positioned further toward an outer circumferential side than the narrow portion.

Growing community of inventors

Kanagawa, Japan

Kentaro Ishii