二二二

The catalytic activity of esterification of diisooctyl terephthalate was studied,with stannous oxide,stannous chloride,stannous octoate and their synergism as catalyst.

以3种亚锡类催化剂氧化亚锡、氯化亚锡、辛酸亚锡以及它们之间复配后作为催化剂，对对苯二甲酸二异辛酯酯化反应的催化活性进行了研究，实验结果表明，以氧化亚锡和辛酸亚锡复配后的催化活性最高，氧化亚锡和辛酸亚锡作为催化剂的酯化反应最佳合成工艺条件为：催化剂的加量为0。

Produce trimellitic acid octyl three main export products and domestic production for enterprises supporting materials, production, domestic sales volume the first in the industry; trusted by the user as the quality of products, octyl sebacate export volume has .

所生产的偏苯三酸三辛酯主要与国内生产出口产品企业合作配套作原料，产量、销量居国内同行业之首；被用户誉为质量信得过产品，癸二酸二辛酯有批量出口。

The main products are fatty acid methyl ester with an annual output of 6,000 tons, with an annual output of 1,000 tons Phytosterols, natural vitamin E oil, food and feed-grade class of natural vitamin E powder with an annual output of 1,200 tons, four with an annual output of 2,000 tons chlorobenzene quinone, crystalline acid Sodium, anhydrous sodium acetate with an annual output of 3,000 tons, and plasticizers to octyl phthalate, and other products, 30,000 tons more than the total output.

主要产品有脂肪酸甲酯年产6000吨，植物甾醇年产1000吨，天然维生素E油、食品级和饲料级天然维生素E粉年产1200吨，四氯苯醌年产2000吨，结晶乙酸钠，无水乙酸钠年产3000吨，以及增塑剂对苯二甲酸二辛酯，等系列产品，总产量30000吨以上。

This paper discussed the synthesis of different plasticizers of DONTP by using DMT,octyl alcohol,octanol,low molecular weight emtrol and others as raw materials. And the effect of process and catalysts on plasticizers was also discussed.

以对苯二甲酸二甲酯、辛醇、丁醇等低分子质量脂肪醇为原料，采用酯交换法合成出DONTP等增塑剂品种，并就合成工艺条件、催化剂种类等因素对增塑剂性能影响进行了讨论。

In this paper,the monomers including St and BA with strong waterproof property were employed to modify the traditional PVAc emulsion,and meanwhile draw into DAAM functional monomer in the copolymer system,will prepare out cross linking copolymer emulsion for ADH to improve the waterproof,oilproof and dry/wet mechanical property of fuel oil filter paper.

采用具有较强抗水性的苯乙烯、丙烯酸丁酯等单体对传统聚醋酸乙烯酯乳液进行共聚改性，并在共聚体系中引入双丙酮丙烯酰胺功能单体，制备出可通过外加己二酸二酰肼交联的外交联醋丙共聚乳液，以期提高燃油滤纸的耐水、耐油性和干湿态的力学性能。

The catalytic transformation pathway can change to decrease the yield of hydrogen and yield methyl-contained sulfides such as methyl mercaptan, dimethyl sulfide and dimethyl disulfide, but overlarge concentration of methanol would holdback the transformation of isobutyl mercaptan. The transformation of isobutyl mercaptan was favorable if the volume ratio of methanol and benzene was 0.2.The addition of methanol assume certain effect on the catalytic cracking of di-n-butyl sulfide in solvent benzene but without changing the cracking reaction mechanism of di-n-butyl sulfide.

甲醇也可以使异丁硫醇的催化转化路径发生改变降低硫化氢的产率，生成甲硫醇、甲硫醚及二甲基二硫化物等含甲基硫化物，但甲醇的浓度过高会抑制异丁硫醇的转化，在反应体系中当甲醇的体积占到溶剂苯体积的20%时对异丁硫醇的转化较为有利；甲醇的添加对丁硫醚在溶剂苯中的催化裂化有一定影响，但没有改变丁硫醚的裂解反应历程。

To obtain a flocculant which could effectively remove dyes from dyeing wastewater , the amphoteric polymer was prepared by copolymerization of acrylamide, acrylic acid, cationic monomer and dmethyldiallylammonium chloride or acryloyl oxyethyl trimethyl ammonium chloride.

为制备一种对染色废水有显著脱色效果的絮凝剂，采用溶液聚合法，将两种阳离子单体二甲基二烯丙基氯化铵和丙烯酰氧乙基三甲基氯化铵分别与丙烯酰胺，丙烯酸共聚，合成了两性聚合物。

The air and the deionized water were considered as standard examples and the densities of diethylene glycol monobutyl ether were measured over a temperature rang of 20 ℃ to 60 ℃ with an Anton Paar DMA60 DMA602 vibrating tube densimeter.

以空气和去离子水为标准样，利用Anton Paar DMA60 DMA602振动管密度计测定了常压下二乙二醇丁醚在20—60℃间几乎每相间1℃密度数据。

In 1331 Pope John XXII had appointed the Augustinian Hermits guardians of the tomb of St. Augustine in the Church of S. Pietro in Ciel d'Oro at Pavia.

在1331年教皇约翰二十二已任命奥古斯丁隐士监护人的陵墓在圣奥古斯丁教堂的美国彼得德天空阵线在帕维亚。

Ammonium Copper Quaternary is a novel wood preservative. DDAC, copper sulfate pentahydrate, ammonium hydroxide or ethanolamine were used to synthesize three different kinds of ACQ.

利用二甲基二癸基氯化铵、五水合硫酸铜、氨水或乙醇胺合成3种不同的氨溶烷基铜铵（ACQ，包括A型、B型、D型）。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。