摘要:
Disclosed is a device for vacuum processing that performs vapor-deposition on a substrate being heated in a vacuum chamber; the device, wherein the chamber has a light transmissible window formed in a section of the chamber; the light transmissible window and a holding part holding the substrate are connected by a linear space isolated from other parts in the chamber; a laser emitter is installed outside the light transmissible window; and the laser emitter emits a laser beam to the substrate through the linear space, thereby heating the substrate. This device enables laser heating, eliminating conventional drawbacks such as a decrease in laser output.
摘要:
Disclosed is a device for vacuum processing that performs vapor-deposition on a substrate being heated in a vacuum chamber; the device, wherein the chamber has a light transmissible window formed in a section of the chamber; the light transmissible window and a holding part holding the substrate are connected by a linear space isolated from other parts in the chamber; a laser emitter is installed outside the light transmissible window; and the laser emitter emits a laser beam to the substrate through the linear space, thereby heating the substrate. This device enables laser heating, eliminating conventional drawbacks such as a decrease in laser output.
摘要:
To produce an aromatic polycarbonate excellent in physical properties and hue by a simplified step as compared with a conventional one. A process for producing an aromatic polycarbonate, which comprises the following steps (1) to (3): (1) a step of reacting phenol with acetone in the presence of an acid catalyst to convert part of the phenol into bisphenol A, to obtain a bisphenol A/phenol composition, (2) a step of supplying the bisphenol A/phenol composition held in a molten state in a liquid form to an aromatic polycarbonate production step, and (3) a step of reacting the bisphenol A and a carbonate material to produce an aromatic polycarbonate.
摘要:
There is provided an aromatic polycarbonate resin composition which is free from unevenness of color and exhibits a good heat resistance and a good hydrolysis resistance. The aromatic polycarbonate resin composition of the present invention comprises: (a) 100 parts by weight of an aromatic polycarbonate resin having a viscosity-average molecular weight of not less than 16000 and containing a branched constitutional unit in an amount of 0.3 to 0.95 mol % on the basis of a constitutional unit represented by the general formula (1): (wherein X is a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, or a divalent connecting group selected from the group consisting of —O—, —S—, —CO—, —SO— and —SO2—); (b) 0.00001 to 0.05 part by weight of at least one colorant selected from the group consisting of phthalocyanine-based compounds, anthraquinone-based compounds and ultramarine blue; and (c) 0.0001 to 0.5 part by weight of a polyalkyleneglycol compound having a number-average molecular weight of 62 to 4000, which is represented by the general formula (2): HO—{—CHR1—CHR2—}m—OH (2) (wherein R1, R2, R3 and R4 are independently a hydrogen atom or an alkyl group, and m is a natural number of 1 to 1000).
摘要:
Colored aromatic polycarbonate resin compositions are prepared by dispersing a colorant (b) selected from phthalocyanine-based compounds, anthraquinone-based compounds and ultramarine blue in a polyalkyleneglycol compound (c) having a number-average molecular weight of 62 to 4000 of formula (2): HO—[—CHR1—CHR2—]m—OH (2) where R1, R2, R3 and R4 are independently hydrogen atoms or alkyl groups, and m is not less than 1. The dispersion is added to an aromatic polycarbonate resin (a) kept in a molten state which has a viscosity-average molecular weight of not less than 16000 and contains a branched constitutional unit of formula (1): in an amount of 0.3 to 0.95 mol % where X is a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, or a divalent connecting group —O—, —S—, —CO—, —SO— and —SO2—.