查询词典 methacrylic

A process for the hydrolysis of acrylonitrile to acrylic acid, and for the hydrolysis of methacrylonitrile to methacrylic acid, in high yield and at high concentration with high specificity is disclosed, wherein an enzyme catalyst is used.

本发明提供一种高产率、高专一性和高浓度的将丙烯腈水解为丙烯酸的方法和将甲基丙烯腈水解为甲基丙烯酸的方法。

Low molecular copolymers of stearyl methacrylate and methacrylic acid were used as stablizer for reverse phase emulsion polymerization.

采用具有增稠和抗电解质作用的丙烯酸聚氧乙烯酯活性单体和具有聚合稳定作用的高分子表面活性剂，通过反相乳液聚合法合成了涂料印花用丙烯酸系增稠剂。

The introduction of the acrylic or methacrylic acid in middle layer is helpful to obtain a latex with smaller particle size and more narrow particle size distribution.

本文对聚合工艺、乳胶粒中间层分率和软硬单体比例、官能团单体含量等对GAD室温自交联乳液的粒径及分布的影响进行了研究。

Polymer A is a acrylic copolymer containing 70% by weight of methacrylic acid and 30% by weight of methyl methacrylate prepared by a catalytic chain transfer method to give a polymer having a number averaged molecular weight of approximately 600 as measured by GPC.

聚合物A是丙烯酸共聚物其含有甲基丙烯酸重量70％，按重量的30％甲基丙烯酸甲酯的催化链转移的方法准备给予聚合物具有的平均人数约600分子量为由GPC测定。

Methacrylic Acid is one of the most important organic materials, and there is large demand indomestic and international market. The traditional preparation method of MAA has lots of limitation suchas high cost, huge pollution, and virulent raw materials. So its necessary to search a new green route toreplace the ACH route.

甲基丙烯酸是一种重要的有机化工原料，目前国内外对MAA的需求量很大，而传统的丙酮氰醇法制备MAA存在成本高、环境污染大、原料剧毒等缺点，所以需要寻找一条新的绿色工艺路线代替传统工艺。

Methacrylic acid was used as additive for the modification of peroxide-cured styrene-butadiene rubber highly filled with Al3 filler.

将甲基丙烯酸用作Al3填充丁苯橡胶复合材料的添加剂，结果表明，在高填充Al3的SBR中加入MAA可以较大幅度地提高其过氧化物硫化胶的力学性能。

Improvement of the electrical properties of LLDPE compound highly loaded with aluminium hydroxide by grafting methacrylic acid to the matrix is investigated.

本文研究了基体接枝甲基丙烯酸对氢氧化铝Al(OH3填充线性低密度聚乙烯电气性能的改善。

The study suggests that the carboxyl of the template is the function group responsible for the formation of complementary interacting site in the polymer P1, and the double hydrogen bonds formed between the carboxyl groups of ferrocenecarboxylic acid and methacrylic acid are the main interactions in the recognition process.

研究还表明，FCA的羧基是在聚合物的孔穴中产生识别位点的功能基，模板分子上的羧基与MAA的羧基形成双重氢键作用是分子识别的主要作用力。

Using the modified electron beam exposure system, we have studied the exposure and developing characteristics of two kinds of resists, which are sensitive for electron beams, polymethylmethacrylate and the copolymer of methylmethacrylate and methacrylic acid P

另外在电镜原有的集成电路试样观察座上设计加工了一个可360°旋转的载物台，载物台X、Y方向移动分辨率为1μm，这样，通过控制工件台和电子束的移动即可实现精密的套刻。

Nano-calcium carbonate （nano-CaCO3） particle was surface modified with methacrylic acid in a medium of ethanol.

在醇相中用具反应活性的甲基丙烯酸对纳米碳酸钙（CaCO3）进行表面处理，制成分散体系。

Now, however, all children continue in "comprehensive" schools, and the eleven-plus determines which courses of study the child will follow.

然而现在，所有的孩子都要在综合学校继续学习，所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。