查询词典 aliphatic

Chocolate brown fog corrosion inhibitor could be prepared by using of waste materials with organic amine being the main contents from production of pharmaceutical industry intermediate 1;8diazabicyclo\hendecene7,built with surfactant compound nonyl phenol polyoxyethylene ether and aliphatic alcohol polyoxyethylene ether.

利用制药工业中间体1，8-二氮杂二环[5，4，0]十一烯-7生产中的废料，与复合表面活性剂壬基酚聚氧乙烯醚、脂肪醇聚氧乙烯醚等，复配得到棕褐色缓蚀抑雾剂。

Aliphatic polyesters is a kind of biodegradable polymer.

脂肪族聚酯是一种可生物降解的新型高聚物，可通过化学催化、发酵和酶催化来合成。

In contrast to aliphatic polyesters, detrimental acidic compounds are not released upon degradation of PTMC and PDTC.

与脂肪族聚酯不同，PTMC、PDTC降解时，不会产生有害的酸性化合物。

Aliphatic polyesters present excellent degradation properties,with degradation by-products harmless to the environment and animal body.

多种脂肪族聚酯都具有良好的水解性质，降解产物对环境和生物体没有毒性，应用前景广阔。

Aliphatic polyesters, one of most promising biodegradable polymers, have been studied extensively and intensively due to their good biocompatibility and biodegradability, and they have found their applications in the fields of biomedical materials, drug delivery systems, packaging materials, agriculture, and so on.

脂肪族聚酯具有良好的生物相容性和可生物降解性，在生物医用、药物传输、包装、农业等领域得到了广泛而深入的研究，是一类极具发展前景的高分子材料。

Was founded in early 2001, with a total investment of more than 500 million yuan, covers an area of 6600 square meters, is specialized production solvent oil businesses, products include: high boiling point aromatic solvent naphtha, solvent oil aliphatic series and related products.

石家庄市鑫安精细化工有限公司始建于2001年初，总投资500余万元，占地面积6600平方米，是专业化生产溶剂油的企业，产品有：高沸点芳香烃溶剂油、脂肪族系列溶剂油及相关产品。

The invention uses the industry byproduct in production of sulfonation-process phenol or the byproduct (Na2SO3 content is 60-85percent) in production of p-cresol and sodium hydrosulfite to produce the aliphatic high range water reducer and takes acetone, formaldehyde, industry byproduct, sulphite or sodium pyrosulfite as raw materials and then sulfonation and condensation reactions are carried out in aqueous medium, the reactant weight ratio is acetone: formaldehyde: sulphite plus industry byproduct: water is equal to 1:2.5-4.5:1.5-2.6:4.0-6.0, the mass concentration of the condensation compound obtained is 30-42 percent, and the viscosity thereof is 20-100m.

本发明利用磺化法苯酚生产中的工业副产品，或者对甲酚和保险粉生产过程中副产品(Na 2 SO 3 含量在60～85％)生产脂肪族高效减水剂，采用丙酮、甲醛、工业副产物、亚硫酸盐和或焦亚硫酸钠作为原材料，在水介质中进行磺化和缩合反应，反应物的质量比为丙酮∶甲醛∶亚硫酸盐副产品∶水＝1∶2.5～4.5∶1.5～2.6∶4.0～6.0，所得到的缩合物的质量浓度为30～42％，粘度为20～100m。

The concrete steps are: the lactic acid and small-molecule dicarboxylic acid react under the condition with the presence of the catalyst to directly polymerize the carboxyl-terminated lactic acid prepolymer; then the aliphatic polycarbonate diol and the catalyst are added; with the presence of the N2, the reaction is kept for 1 to 10 hours at the temperature of 150 to 200 Celsius system to get the poly lactic acid and polycarbonate copolymer of the low molecular weight; then the reaction is done in the twin-screw extruder at the temperature of 150 to 190 Celsius system to screw out the extension chain; finally the polylactic copolymer of the high molecular weight, toughness and heat resistance is made.

具体步骤是：乳酸和小分子二元酸在催化剂条件下反应直接缩聚合成羧基封端的乳酸预聚物，然后加入脂肪族的聚碳酸酯二元醇和催化剂，在N 2 气氛下，抽真空，在150～200℃温度下，反应1～10小时，得到低分子量聚乳酸/聚碳酸酯共聚物，然后在双螺杆挤出机中在140～190℃下，进行反应挤出扩链，最终得到高分子量的、韧性与耐热性较好的聚乳酸共聚物。

Firstly, we should prepare polyester glycol in order to prepare water-borne polyurethane emulsion used to wooden furniture. Polyester glycols having designed molecular weight of 1000 are synthesized by ethylene glycol and mixture of phthalic anhydride and adipic acid (morl radio =40:60)on condition that molar excess content of glycol is 15%, and high vacuum time is 8h.The produced polyester glycols having the same molecular weight as designed measure up to standard of material. And Water-borne polyurethane emulsion's hardness is better than others are produced by aliphatic polyester glycol.

为了制得性能优越木器用水性聚氨酯乳液，首先我们从制备水性聚氨酯用的原料聚酯二元醇入手，我们设计了分子量为1000的聚酯二元醇，它使用邻苯二甲酸酐和己二酸以摩尔比40：60混合后再与乙二醇反应，反应时醇的摩尔过量15%，真空时间8小时，所得的聚酯二元醇，在此条件下酸值基本上能符合用作聚氨酯原料的要求，所测得的分子量也与设计的分子量非常接近，且用它来制得的水性聚氨酯乳液，其涂膜硬度，相对于单独用脂肪族聚酯二元醇制备的水性聚氨酯的要优。

Designating an aliphatic hydrocarbon having a straight and unbranched chain of carbon atoms.

一种黑色的胶状物质，全部或主要由无定型碳组成，用于制色素和墨。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。