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The invention relates to a method for making oligomeric isocyanates by reacting diisocyanates in the presence of a catalyst, wherein the catalyst comprises a saline compound prepared from an anion selected from 1,2,3- or 1,2,4-triazole, a substituted species of 1,2,3- or 1,2,4-triazole and carbocyclically and/or heterocyclically annellated species of 1,2,3- or 1,2,4-triazole and the cation selected from an alkali metal, alkaline-earth metal and/or monovalent ammonium cation and/or phosphonium cation of formula (5), wherein the E, R1, R2, R3, R4 are as defined in the descriotion.

本发明涉及一种制备低聚异氰酸酯的方法,包括二异氰酸酯在催化剂的存在下进行反应,其中所述催化剂由盐化合物组成,该盐化合物由选自1,2,3-或1,2,4-三唑、1,2,3-或1,2,4-三唑的取代系列者、1,2,4-三唑的碳环稠合系列者、1,2,3-或1,2,4-三唑的杂环稠合系列者的化合物及其混合物的阴离子和选自碱金属、碱土金属和/或通式(5)的一价铵阳离子和/或磷友衾胱拥难衾胱又票福其中E、R 1 、R 2 、R 3 和R 4 如说明书中所定义。

In order to figure out the use of compression in the wood preservation aspect, the authors compared the compressed wood samples pretreated with hot water bath or water spraying and compressed preservative-treated wood, which was treated with ammine copper quat-type D preservative solution. The liquid absorption and recovery rate of compression deformation of the compressed wood were determined, as well as the surface hardness, distribution of density and CuO retention in the thickness direction of CPW.

摘要为研究压缩处理在木材防腐方面的应用,该研究测定了经过不同水浴和喷水预处理后的径向压缩木材在胺溶铜季铵盐--D型防腐剂中浸泡后的吸液量和变形回复率,并测定了由此制备得到的压缩防腐木的表面硬度、厚度方向上的密度分布和CuO保持量分布情况。

Lubei Chemical (600727, the closing price of 4.89 yuan) of the Securities Department staff said that the company produces ammonium phosphate, sulfuric acid, cement and other products, as the national economic slowdown, the company has reduced The ex-factory price of the product, but the company has not lowered prices of raw materials, the company's profits by a certain amount of pressure.

鲁北化工(600727,在4.89元的收盘价的证券部工作人员)说,该公司生产的磷铵,硫酸,水泥等产品,作为国家经济放缓,公司降低了出厂产品的价格,但该公司没有降低原材料价格,由一定的压力,该公司的利润。

They can also be used for such materials as following:making planes and spacecrafts,screening high-speed neutron reactors,a superconductor in electrical appliance industry,The vanadium compound can be used as a caterlyzer in sulphuric acid industry,a mixture of ethylene and propylene in symthetic rubber and a desulfurizer in oil-refinery ,an oxidizer in making nylon,pesticide,polyvinyl chloride,a non-propylene decarbonizer in chemical fertilizer industry,amilioration of A.D.A.non poisonkous desulpurtion.

我公司生产的五氧化二钒99.5级,99级,98级以及偏钒酸铵,用途广泛,它可制取金属钒和钒合金,用于钢铁冶炼\机械,飞机以及宇宙飞船制造等行业,快中子反应堆的屏蔽材料和电子工业的超导材料,钒化物应用于硫酸工业催化剂,合成橡胶的乙烯和丙烯交联,石油精炼中的脱硫,尼龙,农药,塑料聚氯乙烯制造的氧化,化肥工业的笨非尔无毒脱碳,改良A,D,A法无毒脱硫,钒化物还因其色泽艳丽而作为颜料应用到玻璃,陶瓷,医药等行业,钒酸盐也是印染业良好的媒染剂。

If as a result of body shell keycap stuck with the key causes of the "key card" failure, may be key in the cap and put a gasket between the pads can be used稍硬some plastic (such as floppy disk jacket abandoned) made, its size is equal to or slightly larger than the key body size, and location by the rod through the ammonium can open a free passage under the square hole, in accordance with its set of poles, the plug cap; use this pad chip cap with the key body to prevent stuck, you can repair button; If as a result of spring fatigue, shrapnel resistance causes large card key failure, then the Special button to open the body, a little stretching to restore flexibility to reset the spring; Remove the key precursor to the resumption of shrapnel.

若是由于键帽与键体外壳卡住的原因造成&卡键&故障,则可在键帽与键体之间放一个垫片,该垫片可用稍硬一些的塑料做成,其大小等于或略大于键体尺寸,并且在按杆通过的位置开一个可使铵杆自由通过的方孔,将其套在按杆上后,插上键帽;用此垫片阻止键帽与键体卡住,即可修复故障按键;若是由于弹簧疲劳,弹片阻力变大的原因造成卡键故障,这时可特键体打开,稍微拉伸复位弹簧使其恢复弹性;取下弹片将键体恢复。

Respectively proceeding with bromine complexing agent of anode, modified membrane and electrolytic additive of cathode, mainly referring to specific power of battery, ratio of self-discharge and zinc dendrite, this paper has studied the influences of different anode additive and modified membrane on specific energy of battery by means of charge and discharge curves, and the influences of electrolytic additive(NH4+, OP-10, TX-10 and dodecyl trimethyl ammonium bromide) on zinc dendrite by means of current-time curve and microscopic morphology observation.

本文分别从正极溴络合剂、隔膜改性和负极的电解液添加剂入手,以电池的比能量、自放电率以及锌枝晶生长情况为主要的性能指标,用电池充放电曲线等方法研究不同正极添加剂和隔膜改性对电池比能量的影响;用电流-时间曲线以及微观形貌观察等方法研究电解液添加剂(NH_4~+、OP-10、TX-10以及十二烷基三甲基溴化铵)对锌枝晶生长的影响。

It was found from orthogonal experiment that the recombination of sodium benzoate, ammonium benzoate, cinnamic acid and sodium tungstate had good synergistic reaction. Based on the orthogonal experiment, a kind of new prescription of vapor phase corrosion inhibitor for DI material is found, which is not only high effective but also friendly to environment.

通过正交试验发现:苯甲酸钠、苯甲酸铵、肉桂酸与钨酸钠的复配使用,表现出很好的协同作用,从而得到了一种新的环保、高效的用於DI材的气相缓蚀剂配方。

The results show that with the content of the synthetic compound increasing, the surface resistivity of PVC materials was decreased. When the content of the synthetic compound reached 4.5%, the surface resistivity of PVC materials was reduced below 3.0×108 ?.

结果表明:随合成长链季铵盐的添加量增大,PVC材料的表面电阻率降低,较小的添加量(4.5%)即可使材料的表面电阻率降低至3.0×108 Ω以下,达到了煤矿行业对高分子材料抗静电性能的要求。

This can be prepared by purchasing "Zephiran" chloride 15% concentrate and diluting by mixing one (1) fluid ounce of concentrate and 127 fluid ounces of water to make a gallon of "Zephiran" solution 0.13%.

它可以这样准备:购买15%的氯化苄基。二甲基。烷基铵浓缩物,把1液量盎司的浓缩物和127液量盎司的水混合在一起,制成1加仑的0.13%的杀藻胺溶液。

A method for simultaneous determination of oxytetracycline, tetracycline, chlortetracycline and choramphenicol in seafood was successfully developed using high performance liquid chromatography with ammonium acetate/water and acetonitrile as the mobile phase. The results showed that the four antibiotics were well separated under the optimum conditions, with the limits of detection being 32 μg/kg for oxytetracycline, 15 μg/kg for tetracycline, 23 μg/kg for chlortetracycline, and 19 μg/kg for choramphenicol. The recovery of standard additions was 76~92% and the relative standard deviation was 0.8-4.5%. The method is rapid, sensitive, accurate and reliable and can be applied in the analysis of antibiotic residues in seafood.

建立了同时检测海产品中土霉素、四环素、金霉素、氯霉素残留的高效液相色谱分析方法,以醋酸铵-醋酸/水缓冲液和乙腈作为流动相,通过二元梯度洗脱,使四种抗生素获得了较好的分离,以基线噪音的3倍计算,土霉素、四环素、金霉素、氯霉素最低检出浓度分别为32μg/kg、15μg/kg、23μg/kg、19μg/kg,在添加浓度范围内,四种抗生素的加标回收率为76~92%,相对标准偏差为0.8~4.5%,该方法快速、灵敏、准确,可靠性高,可用于海产品中抗生素残留的色谱分析。

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Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严,以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆,把帆卷起,系住。

Therefore, positively advances the interest rate marketability reform is one of current our country finance reform important tasks.

因此,积极推进利率市场化改革是当前我国金融改革的重要任务之一。