丙烯酸

As an important industrial solvent,it is capable to dissolve cellulose ether, cellulose ester, nitrocellulose ,alkaline base dyestuff, PVC, polyvinyl acetate, polymethylmethacrylate, polystyrene, coumarone resin, 100% phenol resin, modified phenol resin and various natural resins.

能溶解纤维素醚、纤维素酯、硝化纤维素、碱性染料、聚氯乙烯、聚醋酸乙烯酯、聚甲基丙烯酸甲酯、聚苯乙烯、香豆酮树脂、100%酚树脂、改性酚树脂以及多种天然树脂，是一种重要的工业溶剂。

A special photocurable acrylic cresol phenolic resin containing free epoxy group which can be dissolved in 1% Na2CO3 was synthesized, it preparation conditions were studied in detail.

摘 要：以含环氧基的光敏性丙烯酸酚醛环氧树脂为原料合成了一种可以在1％的碳酸钠溶液中溶解的光敏性酚醛环氧树脂，研究了该树脂的合成条件及工艺。

Results show that when absorptive ratio of water is above 550 times with m: m = 1:4, m: m = 4: 3, mass ratio of initiator is 0. 6%, mass ratio of cross - linker is 0.8‰.

实验结果表明：当引发剂占干物料质量的0.6%，交联剂质量占单体质量的0.8‰，单体与淀粉质量比为4，丙烯酸与丙烯酰胺质量比为1.33，产品的吸水率可超过550。

The factors affecting water absorption were studied, such as mass of initiator and cross - linker, mass ratio of starch and monomer, mass ratio of acrylic acid and acrylamide.

研究了引发剂用量、交联剂量、单体与淀粉质量比以及丙烯酸和丙烯酰胺质量比对产品的吸水率的影响。

The crystallizability and solution properties of polyacrylate depressants and their depressive effects on two waxy oils were studied. It was found that the crystallizability of PA depended on the length of its side chain and molecular weight. Gel was observed in the concentrated solution, The temperature of gelation, which was a measure of the crystallizability of PA in solution, was higher for the PA itself with stronger crystallizability.

对聚丙烯酸长链酯的结晶能力和溶液性质及其对两种含蜡油的降凝效果进行了研究，发现PA的结晶能力取决于PA侧链长度和相对分子质量，而其在溶液中形成冻胶或沉淀的温度（反映PA在溶液中的结晶能力）与PA本体的结晶能力有关，而PA对含蜡油的降凝效果则与PA在油中的结晶能力有关。

Cinnamic acid was applied in the fifth continuous cropping cucumber soil as root exudates.

模拟黄瓜根系分泌物苯丙烯酸，外加于已连续种植5茬黄瓜的土壤中，种植黄瓜。

This article describes the new process of methyl methacrylate which uses methanol,carbon monoxide and acetone as raw materials,via acetone cyanohydrin route;makes the simple economic comparison between the concept design of Chem.

描述了日本三菱瓦斯化学公司以甲醇、一氧化碳和丙酮为起始原料，经丙酮氰醇制取甲基丙烯酸甲酯的新工艺以及化学系统公司的概念设计流程与传统丙酮氰醇工艺的简单经济比较。

Poly/melamine cyanurate composite latex particles are prepared via soapless emulsion polymerization. XPS data and TGA analysis reveal that MC particles are encapsulated by PMMA during polymerization, resulting in the formation of a core-shell structure of PMMA/MC composite latex particles. MC can affect the thermal degradation and promote the charring of PMMA. The application of PMMA/MC in nylon 6 (PA6) indicate that the composite latex particles can improve the mechanical pro...

采用原位乳液聚合法制备了聚甲基丙烯酸甲酯/三聚氰胺氰尿酸盐复合胶粒，对其进行X光电子能谱及热重分析结果显示，在MC阻燃剂颗粒表面覆盖了一层PMMA胶膜，形成了具有核-壳结构的PMMA/MC复合胶粒；MC能影响PMMA的热降解过程并促进其成炭；在尼龙6(PA6)中的应用结果表明，PMMA/MC复合胶粒能改善PA6的力学性能和阻燃性能。

The original crystal configuration of KGM was destroyed, and the molecular structure was disordered. The glass transition temperature T(subscript g of TKGM was only 13.14℃, and there's an obvious melting decalescence peak at 102℃, the difference between decomposed temperature and melting temperature is above 200℃. This means that TKGM has a good thermoplasticization property.

结果表明：合成了KGM和乙酸乙烯酯、丙烯酸甲酯的接枝共聚物；KGM原有的结晶结构被破坏，分子结构呈现无序化；玻璃化转变温度T(下标 g仅为13.14℃，且在102.5℃处有明显的熔融吸热峰，分解和熔融温差达200℃以上，具有较好的热塑加工性能。

In addition, some aryl-substituted propenoic acids were prepared via Perkin reaction. The cyclization and decarboxylation reaction were studied.

此外，通过Perkin反应合成了4种芳基取代丙烯酸，研究了其关环和脱羧反应。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。