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

用自制的磷鎢鉬雜多酸作催化劑，以丁醛和乙二醇反應合成了丁醛乙二醇縮醛乱人伦熟妇中文字幕。

The results of clinical assessment showed that levosimendan was safe and effective which could improve the prognosis of the patients and kept normal blood kinetics. By improving the reported synthetic route, levosimendan was synthesized from acetanilide via eight steps of reaction.

本論文探索了左西孟旦的合成路線亚洲毛片无码一区二区三区，對文獻報道的合成工藝進行了合理有效的改進Jizz美女18，以乙酰苯胺為原料，最終經(jīng)Friedel-Crafts反應亚洲欧美日韩人人涩涩日日，羰基α-位溴代日韩无码激情免费网站视频，丙二酸二乙酯縮合，水解91免费偷拍视频网站，脫羧性爱在线观看，環(huán)合，拆分及重氮化加成等八步反應合成了左西孟旦国产AⅤ熟女乱视频。

Orthogonal test was performed to examine the influences of reaction conditions on microwave-assisted synthesis of 2'-oxo-cyclopentanecarboxylic acid ethyl ester from diethyl adipate.

以己二酸二乙酯為原料AV三级毛片网址，在微波輻射下經(jīng)Dieckmann縮合反應合成2'-羰環(huán)戊基甲酸乙酯。

Study on catalytic synthesis of n-butyl cinnamate with lanthanum methanesulfonate

以正辛醛和乙二醇為原料亚洲色图国产专区，甲基磺酸鑭為催化劑波多性爱视频，合成了正辛醛縮乙二醇。

It was obtained with ethylenediamine and ethenesulfonic sodium as primary material through addition.

它是一種易降解的新型Gemini表面活性劑－N国产精品一区二区精品视频， N'-雙癸跹桥访阑粕基乙二胺二乙磺酸鈉的中間體。

Under the catalyst, the polymerization retarder, the including water medicinal preparation existence condition, the methylacrylic acid and the polyethylene glycol single methyl ether (400) direct esterification synthesis methylacrylic acid polyethylene glycol single methyl ether (400) ester, and the influence factors of the catalyst, polymerization retarder, including water medicinal preparation has mellowly carried on the comparison.

摘要在催化劑国产草莓视频A区在线观看、阻聚劑美女跪下吃J8、帶水劑存在的條件下，由甲基丙烯酸與聚乙二醇單甲醚(400)直接酯化合成甲基丙烯酸聚乙二醇單甲醚(400)酯日韩黄片AV，并對酸醇比一级黄色视频九九影院、催化劑、阻聚劑天天操天天操三级、帶水劑等影響因素進行了比較欧美体内she精高潮。

Keywords malonic acid;diethyl malonate;hydrolysis reaction

丙二酸；丙二酸二乙酯网黄网址免费；水解反應

NOBS PAG , can obviously activate hydrogen peroxide thus , the efficiency of hydrogen peroxide bleaching can be advanced greatly .

研究結果初步表明www.madouav，此類有機酰化劑類如：四乙酰乙二胺国产精品一区二区视色，四乙酰甘脲劲爆欧美中文字幕精品视频，異壬酰氧基苯磺酸鈉，五乙酰葡萄糖等有著非常明顯的活化過氧化氫的作用新品黄色视频在线观看免费，從而能在很大程度上提高紙漿過氧化氫漂白的效率免费看黃色片。

Flame—retardant resin was prepared by the condensation and polymerization of phosphoric acid, trihydroxy methyl propane and epoxy chloropropane,the resin was then reacted with hexane diacid and diglycol under certain condition ,resulting in polyol containing 1.5% P and 17— 18% polyester polyol, which was foamed with polyisocyanate, water and catalyst by one— step method, producing fire...

通過磷酸、三羥甲基丙烷和環(huán)氧氯丙烷的縮合和聚合反應制得阻燃樹脂情侣黄色网站免费看，然后將它與己二酸美女裸体污视频、一縮二乙二醇在一定條件下反應制得含P1.5%和含Cl17～18%的聚酯多元醇，再將它與多異氰酸酯亚洲精品国产精品麻豆99、水熟女一级毛片、催化劑等組分采用一步法發(fā)泡工藝制得阻燃聚氨酯軟泡塑料男人操女人黄网站。

Flame— retardant resin was prepared by the condensation and polymerization of phosphoric acid, trihydroxy methyl propane and epoxy chloropropane,the resin was then reacted with hexane diacid and diglycol under certain condition ,resulting in polyol containing 1.5% P and 17— 18% polyester polyol, which was foamed with polyisocyanate, water and catalyst by one— step method, producing fire—resistant PU soft foam.

通過磷酸、三羥甲基丙烷和環(huán)氧氯丙烷的縮合和聚合反應制得阻燃樹脂免费看欧美下身喷水视频，然后將它與己二酸无码毛片视频一区二区本码国、一縮二乙二醇在一定條件下反應制得含P1.5%和含Cl17～18%的聚酯多元醇，再將它與多異氰酸酯色综合无码、水www.jcnp88.com、催化劑等組分采用一步法發(fā)泡工藝制得阻燃聚氨酯軟泡塑料。