摘要:
A thin film of a-Si, SiO.sub.2 or Si.sub.3 N.sub.4 can be formed on a substrate using a starting material gas containing at least a polysilane of the formula Si.sub.n H.sub.2n+2 (n=2, 3 or 4) by a chemical vapor deposition method with irradiation with light with high film forming rate at lower temperatures.
摘要翻译:可以通过化学气相沉积法使用至少含有式SinH2n + 2(n = 2,3或4)的聚硅烷的原料气体在基板上形成a-Si,SiO 2或Si 3 N 4的薄膜 具有在较低温度下具有高成膜速率的光。
摘要:
In a composition for producing polyurethane foam which comprises an organic polyisocynate compound, a compound having at least one active hydrogen atom in the molecule, a foaming agent and a catalyst as essential components, an aminoalkylsilane represented by the following general formula is contained: ##STR1## wherein n is 1 or 2, and R.sub.1 to R.sub.5 are alkyl groups. By use of such a catalyst polyurethane foam having a even color distribution and excellent mechanical properties is produced.
摘要:
A light- or radiation-sensitive polymer composition comprising (a) a poly(amic acid) having as a major component a repeating unit of the formula: ##STR1## (b) one or more light- or radiation-sensitive compounds having an amino group and an aromatic azide group or aromatic sulfonylazide group in one molecule, and if necessary (c) one or more photosensitizers and/or amine compounds having at least one unsaturated bonding, and/or (d) one or more compounds having at least two unsaturated bonding in one molecule, is highly sensitive to light and radiation and can give a precise relief pattern on a substrate. Further, a finally obtained polyimide film is excellent in heat resistance.
摘要:
Integral skin polymethane foams can be produced in a short time by impingement mixing a solution comprising polyols containing as an essential component a polyol derived from aromatic amine, a blowing agent and a special catalyst of tertiary amine salt having a hetero ring in the molecule, with a solution comprising one or more polyisocyanates, followed by injection into a closed mold and foaming and curing therein.
摘要:
In a dynamoelectric machine having a stator assembly of coil windings and a core, a heat-dissipating, uninflammable, electro-insulative housing encapsulates the coil windings and the core. The housing is made of a cured molded article or material formed of a resin-filler composition which comprises a liquid unsaturated polyester resin, a finely divided calcium carbonate powder, an inorganic mineral particulate having a particle size larger than that of the calcium carbonate powder, a chopped glass fiber and an aluminum hydroxide powder, wherein the ratio by weight of the calcium carbonate to the mineral particulate is 0.3 to 4, the ratio of the weight of glass fiber to the total weight of the composition is 0.05 to 0.25, the ratio of the weight of the polyester resin to the total weight of the composition is 0.1 to 0.4, the weight ratio of the calcium carbonate powder, the mineral particulate and the glass fiber to the total weight of the composition is 0.15 to 0.80, and the weight ratio of the aluminum hydroxide powder to the total weight of the composition is 0.1 to 0.6.
摘要:
There is described photosensitive polymer composition and a polyimide film-coated material made by applying the composition to a support, irradiating with ultraviolet and thereafter heating. The photosensitive polymer composition is prepared by adding a sensitizer to a photosensitive polyamide acid intermediate solution which is obtained by reacting in an inert solvent a first compound comprising 100 to 5% by weight of a photosensitive group-containing diamine and 0 to 95% by weight of a diamine having no photosensitive group, with a second compound comprising at least one compound selected from a tetracarboxylic acid dianhydride and a tricarboxylic acid anhydride monohalide.
摘要:
A novel thermosetting resin composition consisting essentially of (a) one equivalent of a polyfunctional epoxy compound containing 10 to 80% by weight of a polyglycidyl ester of a fatty acid, (b) 1.5 to 5 equivalents of a polyfunctional isocyanate compound and (c) 0.01 to 10% by weight of a curing catalyst based on the total weight of the polyfunctional epoxy compound and the polyfunctional isocyanate compound. A cured product having excellent thermal resistance and excellent thermal shock resistance which is suitable for the molding of a large apparatus can be obtained by heating said thermosetting resin composition.