查询词典 acetal

Using self-made H3PW6Mo6O40 as catalyst,butyraldehyde glycol acetal was prepared by butyraldehyde and glycol.

用自制的磷钨钼杂多酸作催化剂，以丁醛和乙二醇反应合成了丁醛乙二醇缩醛。

The Ultraform acetal product range comprises versatile engineering plastics having varied properties designed for use in exacting components capable of withstanding high stresses.

该Ultraform缩醛产品范围包括通用工程塑料具有不同的特性，专门用于严格的部件能够承受高压力。

Butyraldehyde glycol acetal was synthesized from butyraldehyde and glycol by using iodine as catalyst.

以单质碘为催化剂，通过丁醛和乙二醇反应合成了丁醛乙二醇缩醛。

The "acetal route" starts from 2-chloro-4-cyanopyridine, 8 , and represents an enantioselective and optimized modification of the original racemic discovery chemistry synthesis.

"缩醛三号"从2-氯-4-氰基、八日而且是不对称和优化原始消旋发现化学合成。

A photoresist composition including a polymer is disclosed, wherein the polymer includes at least one monomer having the formula: wherein, R1 is selected from H, linear, branched or circular alkyl with 1-20 carton atoms, linear, branched or circular alkyl with 1-20 C atom, which is perfluorinated or semi-perfluorinated; and CN; R2 is alicyclic group with 5 or more carbon atoms; X is selected from methylene, aether, ester, amide and the connecting part of the carbonate; R3 is linear or branched alkylene with one or more carbon atoms or perfluorinated or semi-perfluorinated linear or branched alkylene; R4 is selected from H, CH3, CF3, CHF2, CH2F and perfluorinated or semi-perfluorinated aliphatic group; R5 is selected from the CF3, CHF2, CH2F and perfluorinated or semi-perfluorinated substituted and unsubstituted aliphatic group; n is 1 or higher integer; OR12 is OH or at least an acid unstable group selected from the tert-alkyl carbonate, tert-alkyl ester, tert-alkyl aether, acetal and ketal.

本发明公开了一种包含一种聚合物的光刻胶组合物，该聚合物包括至少一种具有下列结构的单体：其中，R 1 选自氢、具有1～20个碳原子的线形、支化或环状烷基、半氟化或全氟化的具有1～20个碳原子的线形、支化或环状烷基、以及CN；R 2 为具有5个或更多个碳原子的脂环基团；X为选自亚甲基、醚、酯、酰胺和碳酸酯的连接部分；R 3 为具有1个或多个碳原子的线形或支化亚烷基或者半氟化或全氟化的线形或支化亚烷基；R 4 选自氢、甲基(CH 3 )、三氟甲基(CF 3 )、二氟甲基(CHF 2 )、氟代甲基(CH 2 F)、以及半氟化或全氟化的脂族基团；R 5 选自三氟甲基(CF 3 )、二氟甲基(CHF 2 )、氟代甲基(CH 2 F)、以及半氟化或全氟化的取代或未取代的脂族基团；n为1或更大的整数；OR 12 为OH或者选自叔烷基碳酸酯、叔烷基酯、叔烷基醚、缩醛和缩酮的至少一种酸不稳定基团。

Using butyraldehyde and 1,2-propanediol as raw materials, H3PW6Mo6O 40 /TiO2 as catalyst, butyraldehyde 1,2-propanediol acetal is synthesized.

以二氧化钛负载磷钨钼杂多酸为催化剂，通过丁醛和1，2-丙二醇反应合成了丁醛1，2-丙二醇缩醛。

Based on the analysis of the chromatogram of flavoring compositions of Taishan Tequ, 13 kinds of flavoring compositions including n-propanol, isoamyl alcohol, ethyl caproate, ethyl lactate, ethyl acetate, ethyl butyrate, caproic acid, acetic acid, butyric acid, acetaldehyde, acetal, total acids and total esters were determined as the chromatogram skeleton compositions of Taishan Tequ. The physiochemical indexes of Taishan Tequ could be under proper control through the stipulation of the content range of the above flavoring compositions, which is an effective way to liquor quality improvement and stability and has greatly improved the blending techniques of Taishan Tequ.

以泰山特曲酒香气成分色谱分析结果为基础，确定了正丙醇、异戊醇、己酸乙酯、乳酸乙酯、乙酸乙酯、丁酸乙酯、己酸、乙酸、丁酸、乙醛、乙缩醛、总酸、总酯这13种香味成分作为泰山特曲的色谱骨架成分来控制成品酒理化指标，并制订了控制范围，使泰山特曲的勾兑技术有了飞跃的发展，成为提高与稳定产品质量的有效方法。

Our main products are: 130 polyester enamelled copper round wire, 155 modified polyester enamelled copper round wire, 180 polyester-imide enamelled round copper wire, 200 polyester-imide / PA ester imide compound enamelled copper round wire, high strength acetal enamelled round copper to grade, B grade, F grade, H-class straight Solderability enamelled copper round wire polyurethane.

我们的主要产品有：130级聚酯漆包铜圆线、155级改性聚酯漆包铜圆线、180级聚酯亚胺漆包铜圆线、200级聚酯亚胺/聚酰胺酯亚胺复合漆包铜圆线、高强度缩醛漆包铜圆、以级、B级、F级、H级的直焊性聚氨酯漆包铜圆线。

Results The megakaryocyte and platelet of 112 cases hemopathy marrow smear with acetal phospholipids staining were all positive, the plasmas cell in anaemia were positive, the erythroblast of aplastic anemia positive, the lipocyte in thrombocytopenic purpura positive, and the other cells all negative.

结果］112例血液病骨髓涂片缩醛磷脂染色中的巨核细胞和血小板均为阳性，贫血中的浆细胞为阳性，再生障碍性贫血中的幼红细胞为阳性，血小板减少性紫癜中的脂肪细胞为阳性，其余各种细胞均呈阴性反应。

A series of the ligands including 6-bromo-piperonal dimethyl acetal, bis (9-fluorenyl) silane, and the dimer of indene have been synthesized and characterized.

合成了溴代胡椒醛二甲基缩醛基配体，合成了手性配体甲基苯基双芴基硅烷，合成了茚的二聚体，对其进行表征，培养单晶并测定了晶体结构。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。