Mitsubishi Gas Chemical Company, Inc.

Mgc Filsheet Co., Ltd.

Other

Atsuhiro Tokita

Masato Takasaki

Haruhiko Kurokawa

Hiroki Ishii

Takeru Horino

Toyoji Oshima

Jiro Abe

Kishin Ozawa

Keiichi Zouta

Junya Asano

Atsushi Kimoto

Masaki Hirabayashi

Shigeki Tahara

Provided are: a laminated resin sheet for molding, which is less likely to cause an abnormal appearance during molding, and has an anti-glare layer but has excellent transparency; and a molded article using the same. This laminated resin sheet for molding comprises: a high-hardness resin layer containing a high-hardness resin; a base material layer which contains a polycarbonate resin (a1) and is disposed on one surface side of the high-hardness resin layer; and a hard coat anti-glare layer disposed on the other surface side of the high-hardness resin layer, wherein the glass transition point (Tg1) of the high-hardness resin and the glass transition point (Tg2) of the polycarbonate resin (a1) satisfy the following relationship, and the maximum valley depth (Rv) of the recesses and protrusions of the hard coat anti-glare layer is at most 0.9 μm−10° C.≤(1−2)≤40° C.

Laminated resin sheet for molding, and molded article using same

A method for producing a press-molded body of a polycarbonate sheet including resin layers (A) and (B) respectively containing a polycarbonate resin, and a high hardness resin (B) and a hard coat layer (C) sequentially stacked on at least one surface of the resin layer (A). The method includes pre-heating the polycarbonate sheet to a temperature between a glass transition point of the resin layer (A)&#x2212;45&#xb0; C. or higher and the glass transition point or lower; locating the pre-heated polycarbonate sheet between an upper and lower die of a mold, wherein a time period after the pre-heating is finished until the polycarbonate sheet is located between the upper and lower die of the mold is 90 seconds or shorter; and clamping the mold to press the upper and lower die to obtain the press-molded body of the polycarbonate sheet.

Polycarbonate sheet press-formed body production method

Provided is a two-stage curable laminate characterized in that a layer containing a high-hardness resin (B) is disposed on at least one surface of a resin layer (A) containing a polycarbonate resin (a1), a coating layer (Z) is disposed on the layer containing the high-hardness resin (B), and conditions (i) to (iii) above are satisfied.

Two-stage curable laminate

According to an embodiment, provided is a molding resin sheet including: a base material layer containing a polycarbonate resin (a1); a high-hardness resin layer containing a high-hardness resin; and a hard coat layer, wherein the high-hardness resin layer is located between the base material layer and the hard coat layer, the high-hardness resin has a pencil hardness of HB or more, and the glass transition points of the polycarbonate resin (a1) and the high-hardness resin satisfy the following relationship: &#x2212;10&#xb0; C.&#x2264;(the glass transition point of the high-hardness resin)&#x2212;(the glass transition point of the polycarbonate resin (a1))&#x2264;40&#xb0; C.

High-hardness molding resin sheet and molded article using same

The present invention provides a polycarbonate resin composition containing a polycarbonate resin (A), a flame retardant (B), and a fluoropolymer (C), said polycarbonate resin composition being characterized in that the fluidity of the fluoropolymer (C), as measured using a Koka flow tester (under the conditions of a measurement temperature of 400&#xb0; C., a measurement load of 0.98 MPa, and a die hole diameter of 2.1 mm), is 0.1&#xd7;10cm/sec or greater. The present invention also provides a sheet and a film.

Flame-retardant polycarbonate resin composition, sheet and film using same, and manufacturing method for each

The present invention provides a polycarbonate resin composition characterized by containing 73 to 94.5 mass % of a polycarbonate resin (A), 5 to 25 mass % of a phosphorus-based flame retardant (B), and 0.1 to 2 mass % of a fluoropolymer (C), and by having a flow value of 1&#xd7;0.01 to 10&#xd7;0.01 cm/sec at 280&#xb0; C. The present invention also provides a sheet and a film using the polycarbonate resin composition.

The present invention provides: a polycarbonate resin composition which contains 18-75% by mass of (A) a polycarbonate resin having a viscosity average molecular weight of 28,000-60,000, 5-30% by mass of (B) a phosphorus flame retardant, 18-50% by mass of (C) a fibrous or plate-like inorganic filler, and 0.1-2% by mass of (D) a fluoropolymer; and a sheet and a film, each of which uses this polycarbonate resin composition.

Flame-retardant polycarbonate resin composition, sheet and film each using same, and method for producing said sheet or film

The manufacturing apparatus of the present invention comprises a die for extruding a resin plate and a first roller and a second roller for molding the resin plate. The manufacturing apparatus further comprises: an inner deckel for dividing the resin plate and pre-forming a thick section; and a main molding section provided on the first roller and/or the second roller for molding a non-uniform thickness section from the thick section.

Manufacturing apparatus for film of non-uniform thickness and manufacturing method for film of non-uniform thickness

According to an embodiment, provided is a polycarbonate resin composition containing a polycarbonate resin, wherein a molded product of the polycarbonate resin composition has an integrated value of an amount of chemiluminescence derived from organic peroxide of 4,000 to 12,000 counts per mg of the molded product, and the integrated value of the amount of chemiluminescence is a value obtained by integrating the amount of chemiluminescence at a wavelength of 405 to 650 nm that is measured during 480 seconds in which under a nitrogen atmosphere the temperature is raised from 100&#xb0; C. to 350&#xb0; C. at a rate of 50&#xb0; C./minute and thereafter is maintained at 350&#xb0; C. for 180 seconds.

Polycarbonate resin composition, and molded article and method for manufacturing same

An aromatic polycarbonate resin composition for a fluorescence detection and analysis substrate by which autofluorescence of an aromatic polycarbonate resin, which has been avoided as a resin for a fluorescence detection and analysis substrate due to a critical defect thereof of having fluorescence in a visible light wavelength region, is significantly decreased, and is highly heat-resistant and highly transparent; and a fluorescence detection and analysis substrate produced by melt molding performed on the aromatic polycarbonate resin composition. A polycarbonate resin composition, including a polycarbonate resin synthesized by an interfacial polymerization method, wherein the polycarbonate resin composition fulfills formula (1) below with respect to fluorescence emission of the composition when being excited by light having a wavelength of 290 nm,|{(310)&#x2212;(450)}/{(400)&#x2212;(450)}|&#x2267;40&#x2003;&#x2003;formula (1)where F(310), F(400) and F(410) are respectively fluorescence emission intensities at wavelengths of 310 nm, 400 nm and 450 nm.

Polycarbonate resin composition, and fluorescence detection/analysis substrate produced using polycarbonate resin composition

Provided are: a method for controlling the decoloration reaction rate and color density of a fast light-modulating material to levels suitable for practical use; and a fast light-modulating material having a decoloration reaction rate and a color density which are suitable for practical use. A polymer obtained by polymerizing a paracyclophane-bridged hexaarylbisimidazole compound having a radical-polymerizable group, and a copolymer obtained by copolymerizing the compound with a (meth)acrylic acid compound or a sensitizer having a radical-polymerizable group can achieve controlled decoloration reaction rates, photosensitivity and color tones.

Photochromic material

The present invention is a photochromic material formed of a biimidazole compound represented by general formula (1-1): (where, Rand Rrespectively and independently represent a halogen atom or alkyl group, Rto Rand Rto Rrespectively and independently represent a hydrogen atom, halogen atom, alkyl group, fluoroalkyl group, hydroxyl group, alkoxyl group, amino group, alkylamino group, carbonyl group, alkylcarbonyl group, nitro group, cyano group or aryl group, Arto Arrespectively and independently represent a substituted or unsubstituted aryl group, Rmay form a condensed, substituted or unsubstituted aryl ring with R, and Rmay form a condensed, substituted or unsubstituted aryl ring with R).

Growing community of inventors

Osaka, Japan

Atsuhiro Tokita