摘要:
A polyphenylene sulfide resin composition including 100 parts by weight of a resin composition that consists of 99 to 60 wt % of a polyphenylene sulfide resin (a), and 1 to 40 wt % of at least one type of noncrystalline resin (b) selected from the group consisting of polyetherimide resin and polyether sulfone resin and 0.1 to 10 parts by weight of a compound (c) containing at least one group selected from epoxy group, amino group and isocyanate group, wherein the non-crystalline resin (b) forms an island phase and the number-average dispersed particle size of the noncrystalline resin (b) is 1,000 nm or less.
摘要:
A polyphenylene sulfide resin composition including 100 parts by weight of a resin composition that consists of 99 to 60 wt % of a polyphenylene sulfide resin (a), and 1 to 40 wt % of at least one type of noncrystalline resin (b) selected from the group consisting of polyetherimide resin and polyether sulfone resin and 0.1 to 10 parts by weight of a compound (c) containing at least one group selected from epoxy group, amino group and isocyanate group, wherein the non-crystalline resin (b) forms an island phase and the number-average dispersed particle size of the noncrystalline resin (b) is 1,000 nm or less.
摘要:
A process for producing a polyphenylene sulfide resin with properties of (1) 0.3 wt % or less in the amount of the volatile gas generated when heated and melted at 320° C. in vacuum for 2 hours, (2) 0.3 wt % or less in the ash content achieved when incinerated at 550° C., (3) 4.0 wt % or less in the residue amount achieved when a solution with 1 part by weight of the polyphenylene sulfide resin dissolved in 20 parts by weight of 1-chloronaphthalene is pressure-filtered by a PTFE membrane filter with a pore size of 1 μm at 250° C. for 5 minutes, and (4) higher than 500 g/10 min in melt flow rate (according to ASTM D-1238-70: measured at a temperature of 315.5° C. and at a load of 5000 g), by acid-treating a polyphenylene sulfide resin in an acid treatment step and subsequently treating it for thermal oxidation in a thermal oxidation step.
摘要:
A (poly)oxyalkylene block silyl ester copolymer comprising silyl ester copolymer block units (A) and block units (B), the block units (a) comprising (a) component units derived from a polymerizable unsaturated carboxylic acid silyl ester, and (b) polymerizable unsaturated monomer units other than the component units (a), the block units (B) derived from particular mercapto compounds, and an antifouling paint comprising the (poly)oxyalkylene block silyl ester copolymer. The copolymer enables the formation of an antifouling coating film which exhibits less cracking tendency, excellent adherence, less peeling tendency and controlled hydrolysis rate resulting in excellent antifouling performance and properties.
摘要:
A novel cyclic carboxylic acid formed by the addition reaction of an unsaturated carboxylic acid with a conjugated diene compound and a metal salt thereof are disclosed. A compounding agent (A) for an antifouling paint comprising one or more substances selected from the novel cyclic carboxylic acid, a derivative of the cyclic carboxylic acid (except a metal salt), a metal salt of the cyclic carboxylic acid and a metal salt of a derivative of the cyclic carboxylic acid, and an antifouling paint composition comprising the compounding agent (A) and a copolymer (B) for a self-polishing type antifouling paint are also disclosed. The antifouling paint composition can form an antifouling coating film which is a small burden to the environment, is uniformly eroded at a given rate, is capable of maintaining excellent antifouling performance for a long period of time and is applicable to ships or the like used in the highly fouling sea area.
摘要:
The uninterruptible power supply apparatus comprises an AC switch for turning on/off the AC power that is input from a commercial AC power source; a storage battery; a power conversion device; a load device connected to the output end of the AC switch; an output AC voltage detection unit for detecting an output AC voltage that is output from the AC switch; and an abnormality detection circuit for detecting that the detected output AC voltage is outside predefined upper and lower limits; wherein said AC switch turns off in accordance with a signal detected by said abnormality detection circuit. Further comprises a restoration circuit for generating a restoration signal when the AC voltage detected by an input AC voltage detection unit exceeds at least a lower-limit AC voltage setting that is increased gradually or continuously in accordance with a load factor computed by a load factor computation circuit.
摘要:
An antifouling coating composition comprising (A) a silyl ester copolymer containing constituent units derived from a polymerizable unsaturated carboxylic acid silyl ester; (B) a carboxylic acid; (C) a bivalent or trivalent metal compound; and (D) a dehydrating agent. It is preferred that the component (C) be contained in an amount of 1.2 equivalents or more, in terms of the number of equivalents of metal as a constituent of the component (C), per equivalent of carboxyl group of the carboxylic acid (B); that the component (C) be a bivalent metal compound; and that the component (C) be a compound of at least one metal selected from the group consisting of zinc, copper, magnesium, calcium and barium. From the antifouling coating composition, there can be obtained an antifouling coating film which exhibits less cracking tendency, excellent adherence so as to ensure less peeling tendency and desirably controlled hydrolysis rate so as to be excellent in antifouling performance, in particular, antifouling properties in highly fouling environment and long-term antifouling properties. With respect to the provided antifouling coating composition, its storage stability is high, its concentration can be increased, the amount of solvent used therefor can be reduced, and its applicability is high.
摘要:
An antifouling coating composition can inhibit or prevent fouling of hulls of ships and other underwater structures. The coating composition includes (A) an antifouling agent, (B) a film-forming copolymer having a number average molecular weight of 1,000 to 50,000, and structural units derived from a trialkylsilyl ester of polymerizable unsaturated carboxylic acid in an amount of 20 to 65% by weight, based on the copolymer, and (C) chlorinated paraffin having 8 to 30 carbon atoms, number average molecular weight of 200 to 1200 and a chlorination ratio of from 35 to 75% by weight. Zinc flower may also be included in the antifouling coating composition in place of or in addition to the antifouling agent (A).
摘要:
The present invention provides a thermoplastic resin composition which is produced by a method which includes melt-kneading: (a) a polyphenylene sulfide resin, with (b) a polyetherimide resin or a polyethersulfone resin. The thermoplastic resin composition contains 99 to 1% by weight of the component (a) and 1 to 99% by weight of the component (b) based on 100% by weight of the total amount of the component (a) and the component (b). The melt-kneading step is conducted by employing an extruder provided with an elongational flow zone which is a zone in which melt-kneading is performed while being allowed to undergo elongational flow, wherein the flow effect pressure drop is from 50 to 1,000 kg/cm2 and is determined by subtracting the pressure value (P0) of the molten resin in the elongational flow zone from the pressure value (P) of the molten resin before entering the elongational flow zone.
摘要翻译:本发明提供一种热塑性树脂组合物,其通过熔融捏合(a)聚苯硫醚树脂与(b)聚醚酰亚胺树脂或聚醚砜树脂的方法制备。 基于组分(a)和组分(a)的总量的100重量%,热塑性树脂组合物含有组分(a)99至1重量%和组分(b)1至99重量% b)。 通过使用具有伸长流动区域的挤出机进行熔融捏合步骤,所述伸长流动区域是在进行熔融捏合的同时进行伸长流动的区域,其中流动效应压降为50至1,000kg / cm 2 并且通过从进入伸长流动区域之前的熔融树脂的压力值(P)减去伸长流动区域中的熔融树脂的压力值(P0)来确定。
摘要:
The uninterruptible power supply apparatus comprises an AC switch for turning on/off the AC power that is input from a commercial AC power source; a storage battery; a power conversion device; a load device connected to the output end of the AC switch; an output AC voltage detection unit for detecting an output AC voltage that is output from the AC switch; and an abnormality detection circuit for detecting that the detected output AC voltage is outside predefined upper and lower limits; wherein said AC switch turns off in accordance with a signal detected by said abnormality detection circuit. Further comprises a restoration circuit for generating a restoration signal when the AC voltage detected by an input AC voltage detection unit exceeds at least a lower-limit AC voltage setting that is increased gradually or continuously in accordance with a load factor computed by a load factor computation circuit.