Mitsubishi Gas Chemical Company, Inc.

Renesas Electronics Corporation

Mitutoyo Corporation

Masashi Kurokawa

Jun Mitadera

Kazunobu Maruo

Kazunobu Sato

Tomomichi Kanda

Takahiro Takano

Kenichi Kawakami

Nobuhiko Matsumoto

Kenji Okabe

Isao Nomura

Kenichi Narita

Shoichi Tanaka

Shigeyuki Hirose

Provided is a xylylenesebacamide resin molding which is excellent in mechanical strength such as elastic modulus and avoids the problem of mechanical strength loss during long-term use. This is a molding of a polyamide resin or a polyamide resin composition containing the polyamide resin, wherein 70 mol % or more of the diamine structural unit is derived from xylylenediamine (A) and 50 mol % or more of the dicarboxylic acid structural unit is derived from sebacic acid (B), and the molding has a crystallinity index of 0 to 50% and a moisture content of 0.1 to 2% by mass.

Polyamide resin moldings

Provided is a polyamide resin having excellent color tone and elastic modulus, excellent gas barrier properties and low water absorption. The polyamide resin comprises a diamine structural unit and a dicarboxylic acid structural unit, wherein 70 mol % or more of the diamine structural unit is derived from xylylenediamine (A-1) and/or bis(aminomethyl)cyclohexane (A-2) and 50 mol % or more of the dicarboxylic acid structural unit is derived from sebacic acid (B), characterized in that it has a sulfur atom concentration of 1 to 200 ppm by mass.

Polyamide resin

Disclosed is a polyamide resin composition having excellent gas barrier properties and heat aging resistance, which contains (A) a polyamide composed of a diamine unit containing a 1,3-bis(aminomethyl)cyclohexane unit and a dicarboxylic unit and at least either of (B) an aromatic secondary amine based compound and (D) a phenol based antioxidant and has an oxygen permeability coefficient of not more than 1.5 cc&#xb7;mm/m&#xb7;day&#xb7;atm at 23&#xb0; C. and 75% RH.

Polyamide resin composition and molded article

Disclosed is an m-xylene group-containing polyamide resin composition having excellent gas barrier properties and heat aging resistance, which contains (A) a polyamide composed of a diamine unit containing 30% by mole or more of an m-xylylenediamine unit and a dicarboxylic acid unit and (B) an aromatic secondary amine based compound and has an oxygen permeability coefficient of not more than 1 cc&#xb7;mm/m&#xb7;day&#xb7;atm at 23&#xb0; C. and 75% RH.

Polyamide resin composition and molded product

[Problems] Provided is a polyamide resin material having high elastic modulus, good gas barrier properties, low water absorption and excellent flexibility. [Means for solving the problems] This is a polyamide resin composition comprising a polyamide resin (A) composed of a diamine structural unit and a dicarboxylic acid structural unit wherein 70 mol % or more of the diamine structural unit is derived from xylylenediamine and 50 mol % or more of the dicarboxylic acid structural unit is derived from sebacic acid, and 1 to 40 parts by mass of at least one copolyamide (B) selected from the following group consisting of (B-1)-(B-3) per 100 parts by mass of the polyamide resin (A); (B-1): a copolyamide 6/66/12; (B-2): a copolyamide 6/66/11; (B-3): a polyether-polyamide copolymer composed of a polyamide 12 unit or a polyamide 11 unit and a polyether unit.

Polyamide resin compositions

A semiconductor integrated circuit includes a macro connected between a first power supply line and a second power supply line to drive a load, and a power-supply-noise cancelling circuit connected between an input and an output of the macro to generate a current for canceling one of a current flowing from the first power supply line to the output of the macro and a current flowing from the output of the macro to the second power supply line, on the basis of a potential difference between the input and the output of the macro. The macro and the power-supply-noise cancelling circuit are mounted in a same chip.

Semiconductor integrated circuit

There is provided a multilayer bottle comprising a barrel portion including an outermost layer, an innermost layer and at least one barrier layer interposed between the outermost layer and the innermost layer, which satisfies the requirements represented by the following formulae (1) to (3) at the same time:OTR&#x2266;0.2 cc&#xb7;mm/(m&#xb7;day&#xb7;atm)&#x2003;&#x2003;(1)where OTR represents an average oxygen transmission rate of the barrier layer of the barrel portion;20&#x2266;(Average degree of orientation of barrier layer of barrel portion)&#x2266;45; and&#x2003;&#x2003;(2)0&#x2266;&#xd7;100&#x2266;200&#x2003;&#x2003;(3)where 'a' represents an average thickness (&#x3bc;m) of the barrier layer of the barrel portion; and 'b' represents an average thickness (&#x3bc;m) of the barrier layer of a bottom portion of the bottle. The multilayer bottle is free from delamination owing to impact upon dropping even when the bottle is formed with irregularities and bends and therefore exhibits a large freedom of design choice.

Multi-layered bottle

A laser processing apparatus is provided with a first laser oscillator for laser CVD and a second laser oscillator for laser repair in a laser oscillation section. Either one of the first or second laser beam is irradiated by switching the first and second laser oscillators by a laser oscillator switch portion of a main body section. An optical path forming member is disposed such that the first or second laser beam, whichever is irradiated, will take the same optical path and reach a sample, after passing a common slit, to perform laser processing on the sample. Further, an objective lens is configured to be switched to an objective lens having a magnification corresponding to a wavelength of the laser beam irradiated from the laser oscillation section by an objective lens switch section of an objective lens section.

Laser processing apparatus

Provided is a semiconductor integrated circuit including: an output circuit connected between a power supply (VDD) and a ground (GND), having an input connected to an input terminal, and having an output connected to an output terminal; and a power-supply-noise cancelling circuit connected between the input terminal and the output terminal to generate a current that cancels a current flowing from the power supply (VDD) to the output terminal or a current flowing from the output terminal to the ground (GND), based on a potential difference between the input terminal and the output terminal.

There is provided a multilayer bottle including an outermost layer and an innermost layer which are each made of a thermoplastic polyester resin, and at least one barrier layer interposed between the outermost layer and the innermost layer. The barrier layer contains at least two components including a polyamide obtained by polycondensing a diamine component containing m-xylylenediamine as a main component with a dicarboxylic acid component containing an &#x3b1;,&#x3c9;-linear aliphatic dicarboxylic acid as a main component, and a thermoplastic resin having a lower molecular weight than that of the polyamide. The multilayer bottle hardly suffers from delamination upon impact or dropping and, therefore, is not required to have a shape with less irregularities or less bends for preventing the delamination, and further has a large freedom of design choice.

Multilayer bottle

The single-layered structure of the invention comprises (A) 50 to 97% by weight of a polyolefin, (B) 2 to 45% by weight of a polyamide resin comprising a diamine component and a dicarboxylic acid component and (C) 1 to 45% by weight of a modified polyolefin and/or styrene copolymer. The polyamide resin B is dispersed in layers throughout the single-layered structure. With such a dispersion state of the polyamide resin B, the single-layered structure exhibits excellent fuel barrier properties.

Fuel barrier single-layered structure and multi-layered shaped article

The thermoplastic resin composition of the invention comprises (A) 50 to 97% by weight of a polyolefin, (B) 2 to 45% by weight of a polyamide resin comprising a diamine component and a dicarboxylic acid component and (C) 1 to 45% by weight of a modified polyolefin and/or styrene copolymer. The polyamide resin is specified by that at least 70 mol % of the diamine component is a constitutional unit derived from m-xylylenediamine and at least 70 mol % of the dicarboxylic acid component is a constitutional unit derived from a C-Cstraight-chain &#x3b1;,&#x3c9;-aliphatic dicarboxylic acid and isophthalic acid in a molar ratio of 3:7 to 10:0. With such a chemical component, the thermoplastic resin composition exhibits excellent fuel barrier properties, heat resistance and moldability.

Fuel barrier thermoplastic resin composition and shaped article

The fuel-barrier polyamide resin of the present invention is a product of the polycondensation of a diamine component comprising 70 mol % or higher of m-xylylenediamine and a dicarboxylic acid component comprising 70 mol % or higher of a mixed dicarboxylic acid which comprises a Cto C&#x3b1;,&#x3c9;-linear aliphatic dicarboxylic acid and at least one dicarboxylic acid selected from the group consisting of isophthalic acid and naphthalenedicarboxylic acid in a molar ratio of 30:70 to 95:5. The polyamide resin is excellent in not only fuel-barrier property and heat resistance, but also moldability and recyclability, and therefore suitably used as a barrier material of fuel containers.

Fuel-barrier polyamide resin and multilayer shaped article

A molding polyamide resin composition comprising 100 parts by weight of (A) a poly(m-xylylenesebacamide) resin, and 1 to 20 parts by weight of (b) a crystalline polyamide having a melting point about 20.degree.-30.degree. C. higher than that of the poly(m-xylyenesebacamide) resin (A).

Growing community of inventors

Kanagawa, Japan

Masashi Kurokawa