摘要:
Laminated steel sheet for a container material with a small environmental load container material and coating pre-coated steel sheet for a container material characterized by comprising steel sheet having on it a tin layer or iron-tin alloy layer which has on it a tin oxide layer of a thickness measured by an electric stripping method of 0 mC/cm2 to 3.5 mC/cm2 and has further formed on that a foundation layer including a zirconium compound not including fluorine or nitrate nitrogen, having an amount of coating converted to zirconium of 1 mg/m2 to 30 mg/m2, and having an amount of sulfuric acid radicals (SO42−) of 0 mg/m2 to 7 mg/m2.
摘要翻译:用于具有小环境负荷容器材料的容器材料和用于容器材料的涂层预涂钢板的层压钢板,其特征在于包括具有锡层或铁 - 锡合金层的钢板,所述锡层或铁 - 锡合金层上具有氧化锡层 通过电剥离法测量的厚度为0mC / cm 3至3.5mC / cm 2的厚度,并且还形成有包含不含氟或硝酸盐氮的锆化合物的基础层,其中转化为锆的涂层量为1mg / m 2至30mg / m 2,并且具有0mg / m 2至7mg / m 2的硫酸根(SO 4 2-)的量。
摘要:
A resin composition for coating a metal sheet comprising a polyester resin (A) having an intrinsic viscosity of 0.5-2.0 dl/g, an elastomer resin (B) and a vinyl polymer (C) containing at least 1 wt % of a unit with a polar group, and having a structure wherein the elastomer resin (B) is finely dispersed in the polyester resin (A) and at least a portion of the elastomer resin (B) is capsulated by the vinyl polymer (C). Also, metal-sheet-coating resin films using the resin composition, resin-coated metal sheets coated with the resin film, and resin-coated metal containers made by molding the resin-coated metal sheets are disclosed.
摘要:
Disclosed is a method for the cathodic electrocoating of a tin-coated steel sheet in a treatment solution that does not contain any Cr compound, F or nitrite nitrogen. In the method, a tin oxide layer that is not subjected to a cathodic electrocoating treatment yet and is arranged on a tin-coated steel sheet is thinned to a specified thickness or less by a cathodic electrocoating treatment in an aqueous solution containing sodium carbonate or sodium hydrogen carbonate or a aqueous sulfuric acid solution immersion treatment, and the tin oxide layer is subjected to a cathodic electrocoating treatment in an aqueous solution of an alkaline metal sulfate containing a zirconium compound having a specified composition. In this manner, a coating film is formed on the tin oxide layer at a specific adhered amount in terms of Zr content. Also disclosed are: a process for producing a chromium-free steel sheet for a container material, which has excellent adhesion to an organic resin film and excellent iron elution resistance after dent impact; and a steel sheet for a container material, which is produced by the process.
摘要:
There is disclosed a viscoelastic resin composition for vibration damping material containing as essential components a polyester resin having a molecular weight of 5,000 to 50,000 and an acid value of 50 to 500 equivalents/10.sup.6 g, at least 80 mol % of the polycarboxylic acid component of which is an aromatic dicarboxylic acid and, at least 30 mol % of the polyol component of which is a compound of the formula (I):H--(OR.sub.2).sub.n --O--A--R.sub.1 --A--O--(R.sub.2 O).sub.n --H(I)wherein R.sub.1 is oxygen or a straight or branched chain C.sub.1-6 alkylene group; R.sub.2 is a straight or branched C.sub.1-6 alkylene group; A is a group of the formula: ##STR1## (wherein R.sub.3 is hydrogen or a C.sub.1-6 alkyl group); and n is an integer of 1 to 6, an acid anhydride compound having at least two acid anhydride groups in a molecule, and an epoxy compound having at least two epoxy groups in a molecule.
摘要:
A viscoelastic resin which comprises a reaction product of:(A) a polyester diol having a molecular weight of 400 to 6,000, at least 60 mol % of the dicarboxylic acid component of which is an aromatic dicarboxylic acid and at least 30 mol % of the glycol component of which is neopentyl glycol or its derivative;(B) an aliphatic polyester diol having a molecular weight of 600 to 6,000;(C) a diisocyanate compound; and(D) a chain extender;said (A), (B), (C) and (D) being reacted in a weight ratio (A):(B):(C) of 100:0 to 150:10 to 100:0 to 30.
摘要:
A method for the cathodic electrocoating of a tin-coated steel sheet in a treatment solution that does not contain any Cr compound, F or nitrite nitrogen. A tin oxide layer that is not subjected to a cathodic electrocoating treatment yet and is arranged on a tin-coated steel sheet is thinned to a specified thickness or less by a cathodic electrocoating treatment in an aqueous solution containing sodium carbonate or sodium hydrogen carbonate or an aqueous sulfuric acid solution immersion treatment, and the tin oxide layer is subjected to a cathodic electrocoating treatment in an aqueous solution of an alkaline metal sulfate containing a zirconium compound having a specified composition. In this manner, a coating film is formed on the tin oxide layer at a specific adhered amount in terms of Zr content.
摘要:
The present invention relates to a viscoelastic resin composition for a vibration damping material and a vibration damping material using the same. The viscoelastic resin composition includes as its main components: Low Tg resin (A) with a glass transition temperature of -60.degree. C. to 0.degree. C. and a number average molecular weight of 5000 to 50000, the Low Tg resin (A) being a polyester containing an acid component having 50 to 90 mol % of aromatic dicarboxylic acid and 10 to 50 mol % of dimer acid, and a glycol component having at least 30 mol % of glycol with an alkyl group as its side chain and the glycol having at least four carbon atoms; and High Tg resin (B) which is at least one selected from the group consisting of amorphous polyester resins, phenoxy resins, and epoxy resins, the epoxy resins having a number average molecular weight of at least 1000, the respective resins having a glass transition temperature in the range of 0.degree. C. to 80.degree. C.; wherein the weight ratio between the Low Tg resin (A) and the High Tg resin (B) is in the range of 90:10 to 30:70. This viscoelastic resin composition is used for a resin layer of an attachable vibration damping material and a sandwich type vibration damping material.
摘要:
Disclosed herein is a viscoelastic resin composition for vibration-damping material which comprises (A) at least one amorphous polyester resin of low specific gravity in which more than 40 mol % of the dibasic acid moiety is of aromatic type, (B) at least one amorphous polyester resin of high specific gravity in which more than 80 mol % of the dibasic acid moiety is of aromatic type, and (C) at least one hardener selected from the group consisting of polyisocyanate compounds, epoxy group-containing compounds, and acid anhydrides, said consitutents (A) and (B) being in the ratio of from 90:10 to 30:70 by weight and differing from each other in specific gravity (at 30.degree. C.) by 0.06 to 0.15 and also in molecular weight by more than 10000, with that of either of them being higher than 5000. This resin composition gives a vibration-damping material which exhibits improved vibration-damping properties, adhesive strength, formability, and heat resistance after forming.
摘要:
The use of an amorphous block copolyester resin as a viscoelastic resin for a composite vibration damping material, and a viscoelastic resin composition for a composite vibration damping material which comprises the amorphous block copolyester resin and at least one compound selected from the group consisting of polyepoxy compounds, polyisocyanate compounds and acid anhydrides.
摘要:
A chromate-free resin composite damping material is provided having a multilayer structure. The material can include an viscoelastic resin composition provided between two metal plates as an intermediate layer, where the viscoelastic resin composition can include a thermosetting resin further including an amorphous copolymerizable polyester resin and a curing agent. A surfaces of each metal plate contacting the resin composition can be provided with a chromate-free adhesion boundary film which includes between about 5 and 50 mass % of silica, between about 5 and 50 mass % of a polyester resin, between about 1 and 50 mass % of tannic acid, and between about 0 and 30 mass % of a silane coupling agent. Such damping material can provide excellent durable adhesion properties.