摘要:
A lubricating composition comprising (a) a lubricating oil, (b) at least one phosphite ester of pentaerythritol, and (c) at least one compound selected from phosphate monoesters and diesters and phosphonates is suitable for metal forming, particularly for plastic working of aluminum and aluminum alloy with excellent formability and heat resistance.
摘要:
A lubricating composition comprising (A) at least one member selected from (a) a polyoxyalkylene alkyl ether phosphate diester, (b) a polyoxyalkylene alkylphenyl ether phosphate diester and (c) a phosphonate ester, in an amount of 3% by weight or more, (B) an N,N'-ethylenebis acid amide having an average particle size of 1 .mu.m or more in an amount of 2 to 15% by weight, and if necessary (C) a lubricating oil having a viscosity of 5 mm.sup.2 /s or more ('.degree. C.) is suitable for cold plastic working of aluminum alloys, particularly age-hardening type aluminum alloys, at the reduction of area of 35% or more.
摘要:
A substantially water-free, emulsion type liquid lubricant for metal forming which comprises:(a) a lubricating oil,(b) at least one of phosphoric acid esters represented by the general formula: ##STR1## wherein R is alkyl, alkylalkenyl or aryl; n is an integer of 1 to 2, and (c) an emulsifying agent,an average particle size of the phosphoric acid ester being 0.3 to 120 .mu.m, can form a lubricating film having distinguished heat resistance and lubricating properties by virtue of the heat generated by deformation and friction during the metal forming only by wetting the surface of a metallic workpiece or a die or both with the lubricant and work effectively for preventing galling, and thus parts with a high reduction of area or parts of complicated shapes can be readily formed.A lubricating film having a lubricating effect equivalent to that of the conventional phasphate film can be simply obtained, greatly contributing to reduction in product cost.An emulsion type liquid lubricant having a prolonged emulsion stability can be prepared through emulsification with a high speed mixer having a stirring blade with wiremesh-like fine perforations, and thus articles or parts with uniform quality can be formed.
摘要:
A substantially water-free, liquid lubricant for metal forming, which comprises a lubricating oil, and at least one of linearly condensed phosphorus compounds represented by the following general formula (1):M.sub.m H.sub.n+2-m P.sub.n O.sub.3n+1 (1)wherein m is an integer of 0, 1, . . . , n+1, n is an integer of 2 to 6, and M is an alkali metal, and cyclically condensed phosphorus compounds represented by the following general formulae (2) and (3):(HPO.sub.3).sub.n (2)M.sub.x H.sub.y (PO.sub.3).sub.x+y (3)wherein n is an integer of 2 to 8, M is an alkali metal, and each of x and y is an integer of 1 or more, where x+y.ltoreq.8, and furthermore at least one of organic compounds having phosphorus, sulfur or chlorine as an extreme-pressure agent, and furthermore a fatty acid can form a lubricating film with a good heat resistance and a good lubricating ability by heat generated during metal forming only by applying it to the surface of a workpiece or a mold and can work effectively for preventing the workpiece from galling, greatly contributing to simplification of the production steps and reduction in product cost.
摘要翻译:一种用于金属成形的基本上无水的液体润滑剂,其包含润滑油,以及由以下通式(1)表示的至少一种线性缩合磷化合物:MmHn + 2-mPnO3n + 1(1)其中m为 一个0,1,...的整数。 的。 的。 ,n + 1,n为2〜6的整数,M为碱金属,由以下通式(2)和(3)表示的环状稠合的磷化合物:(HPO 3)n(2)M x H y )x + y(3)其中n是2至8的整数,M是碱金属,x和y各自为1或更大的整数,其中x + y = 8,此外至少 作为极压剂的具有磷,硫或氯的有机化合物之一,此外,脂肪酸可以通过在金属成型期间产生的热而形成具有良好的耐热性和良好的润滑性的润滑膜, 的工件或模具,并且可以有效地工作以防止工件磨损,从而极大地有助于简化生产步骤和降低产品成本。
摘要:
A magnetic recording medium which comprises a non-magnetic substrate, a thin film magnetic layer formed on the surface of the substrate and an organic thin film protective layer formed on the magnetic layer, the organic thin film protective layer having a thickness of not more than 100 nm and containing a filler having a particle size of not more than 50 nm, wherein the surface of the organic thin film protective layer is further coated with a fluorine-based compound represented by the following general formula:F(C.sub.3 F.sub.6 --I--).sub.x --C.sub.2 F.sub.4 --,F(C.sub.3 F.sub.6 --O--).sub.x --(CF.sub.2 O).sub.y --(CF.sub.2).sub.z --or--(C.sub.2 F.sub.4 --O--).sub.y --(CF.sub.2 --CF.sub.2 --, wherein x, y and z are integers of 1 or more, and a magnetic head whose surface is coated with a lubricant thin film having the same composition as that of the above organic thin film protective layer have an excellent sliding durability, and a magnetic recording apparatus using these magnetic recording medium and magnetic head has a high reliability.
摘要:
A delay circuit includes a delay unit having a first and a second power supply terminals, a pair of differential signal input terminals and a pair of differential signal output terminals. The signals entered to the pair of differential signal input terminals are delayed and output at the pair of differential signal output terminals. The delay circuit also includes a current controller that exercises control to cause a current of a current source, controlled by a current control terminal, to flow through the first and second power supply terminals of the delay unit. The delay circuit also includes a voltage controller that exercises control to provide for a constant potential difference between the first and the second power supply terminals (FIG. 1).
摘要:
The present invention relates to stable cyrstalline (6R,7R)-7-[(Z)-2-(2-aminothiazol-4-yl)-2-(1-carboxy-1-methylethoxyimino)acetamido]-3-(5,6-dihydroxy-2-methyl-2-isoindolinium)-3-cephem-4-carboxylate sulfate or its hydrate, a process for production of the compound and (6R,7R)-7-[(Z)-2-(2-aminothiazol-4-yl)-2-(1-carboxyl-1-methylethoxyimino)acetamido]-3-(5,6-dihydroxy-2-methyl-2-isoindolinium)methyl-3-cephem-4-carboxylate hydrochloride or its hydrate which is a starting material useful for the production of the desired compound of the present invention.
摘要:
A method for driving a liquid crystal element including a ferroelectric liquid crystal sandwiched between a pair of substrates having electrodes on their opposite surfaces is disclosed. A pulse voltage for defining the light transmitting state of the liquid crystal element is applied to the ferroelectric liquid crystal. Before and/or after the application of the pulse voltage, the ferroelectric liquid crystal is applied with a voltage signal which renders the average value of voltages applied to the ferroelectric liquid crystal equal to zero.
摘要:
A pleochroic color display device is provided which comprises a layer of guest-host type liquid crystal sandwiched between two transparent electrodes for driving the liquid crystal, the guest-host liquid crystal containing a dichroic dye as guest material, and a color filter disposed in front or rear of the layer of the guest-host type liquid crystal. High contrast pleochroic color displays can be obtained by selecting a blackish dye as the dichroic dye. Dichroic displays other than white ones can be produced by the use of a single liquid crystal cell and a single color filter (with one color).
摘要:
A process for preparing indolopyrrolocarbazole derivatives [I] by trating a compound [V] with a base in an inert solvent to prepare a compound [IV], reacting the compound [IV] with a compound [III]to prepare a compound [II], and deblocking the compound [II]; intermediates [II], [III] and [IV]; and a process for preparing compounds [III]: [wherein Y1 is hydrogen, C1-4 alkyl, phenyl, benzyloxymethyl, or aralkyl; R1, R2, R3, R4, R5, and R6 are each independently a hydroxyl-protecting group; R7 and R8 are each independently hydrogen or a hydroxyl-protecting group; and X is an acid molecule]. The above process is a safe and easy industrial process for preparing indolopyrrolocarbazole derivatives [1] useful as antitumor agents.
摘要翻译:通过在惰性溶剂中用碱处理化合物[Ⅴ]制备吲哚并吡咯咔唑衍生物[Ⅰ]的方法,以制备化合物[Ⅳ],使化合物[Ⅳ]与化合物[Ⅲ]反应,制备化合物[Ⅱ] 并解封复合物[II]; 中间体[II],[III]和[IV]; 和其中Y 1为氢,C 1-4烷基,苯基,苄氧基甲基或芳烷基的化合物[III]的制备方法: R 1,R 2,R 3,R 4,R 5和R 6各自独立地为羟基保护基; R 7和R 8各自独立地为氢或羟基保护基; X为酸分子]。 上述方法是制备用作抗肿瘤剂的吲哚并吡咯并唑衍生物[1]的安全和容易的工业方法。