丙烯酸的

The induced supramolecular chirality was found to be dependent on the absolute configuration of lateral residues, that is, the polymers with-configurational oxazolinyl chromophores tended to form chiral aggregates with levorotatory handedness, while polymers obtained from the-monomer offered dextrogyrate one upon the addition of Cu salt. A model, in which side groups would arrange in a helix fashion, is employed for describing the unusual chirality.

由此提出了侧基在Zn／Cu协同配位作用下形成螺旋状排列的模型，即侧基螺旋模型。N-噁唑啉苯基马来酰亚胺与甲基丙烯酸甲酯共聚得到了耐热性能好(热分解温度大于296℃)的光学活性聚合物~(25D=-7.8°(来源：Af4BC论文网www.abclunwen.com)～-36.6°。

Hydroxy-2,3-dihydro-4-quinolone is synthesized by the basic material of 4-nitrochloro-benzene. It has investigated the routes, conditions and purifies methods in this paper, which provides bases to lucubration and industrialization. This study belongs to the field of medical intermediates.

本文以4-硝基氯苯和丙烯酸为基础原料合成6-羟基-2，3-二氢-4-喹啉酮，并对6-羟基-2，3-二氢-4-喹啉酮的合成条件和纯化方法进行了实验研究，为后续的深入研究和工业化生产提供依据。

The research indicated that under the compound use of hydroquinone and methyl quinone or independent use of phenothiazines or nitrogen oxygen free radical made the polymerization retarder, opposite-methyl-phenylsulfon made the esterification catalyst, toluol made the backflow including water condition, the acid mellowly compared to when it was 1.15, the production rate of the synthesis methylacrylic acid polyethylene glycol single methyl ether (400) ester may achieve 98.9%, was extremely similar to the overseas product functional group structure.

研究表明，在氢醌、甲醌复合使用或者单独使用吩噻嗪、氮氧自由基哌啶酮作阻聚剂，对甲苯磺酸作酯化催化剂、甲苯作回流带水的条件下、酸醇比为1.5时，合成的甲基丙烯酸聚乙二醇单甲醚(400)酯产率可以达到98.9%，与国外产品官能团结构十分相似。

Methacrylate photoresist was one of the tradition photoresist s and it had high transparent and resolution.

甲基丙烯酸树脂光刻胶是传统的光刻胶之一，具有高度的透明性及分辨率。

Methacrylate photoresist was one of the tradition photoresists and it had high transparent and resolution.

甲基丙烯酸树脂光刻胶是传统的光刻胶之一，具有高度的透明性及分辨率。

No signs of fatigue were found for the polymethyl methacrylate, but small cracks were in the calcium phosphate.

在聚甲基丙烯酸甲酯中没有发现疲劳折断的迹象，但磷酸钙中有轻微的裂隙。

The purpose of this study was to inestigate whether calcium phosphate can be used as an alternatie material to polymethyl methacrylate for ertebroplasty and kyphoplasty.

讨论这一研究的目的是对磷酸钙是否可以当作聚甲基丙烯酸甲酯的一种替代材料应用于椎体成形术和后凸成形术进行观察。

This paper introduced several synthetic routes of methacrylic acid polyoxyethylene ester,reviewing their advantages and disadvantages.

介绍了甲基丙烯酸聚氧乙烯酯的几种合成工艺路线，并对各种工艺路线的优缺点进行了评述。

Pb and Fe as promoters, Pd/CaCO3 Lindlar catalysts were modified by impregnation method of fractional steps on unique supports. The new catalysts were prepared for one-step oxidative esterification of methacrole to continuously synthesis methyl methacrylate.

以Pb、Fe为助剂用分步浸渍法在特制的载体上改性Pd/CaCO3催化剂，制备了用于甲基丙烯醛一步氧化酯化液相连续法制备甲基丙烯酸甲酯的新型催化剂。

A novel radical polymerization, polymerization of Methyl methacrylate in the copper alginate complex membrane-HSO_3-H_2O system was studied.

本文研究新的聚合反应体系，甲基丙烯酸甲酯在褐藻酸铜络合物膜-HSO_3~--水体系中的聚合反应。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。