丙烯酸

The heating curing and isothermal curing processes of polyacrylate were studied by Torsion Barid Analysis.

利用动态力学扭辫分析研究了聚丙烯酸酯的升温和恒温固化过程，提出了一种两步固化机理，并求算得到了体系的固化活化能，发现有机锡催化剂能有效降低固化活化能并讨论了其催化历程。

The results indicated that the UV coatings made from epoxy acrylate resin/TPGDA monomer by the weight ratio of 80/20, and 3% dosage of benzil dimethyl ketal photoinitiator had an excellent films properties such as hardness, tensile strength, gloss and weatherability, while it possessed a poor impact resistance and adhesion of films.

试验结果发现，以预聚合体/单体比例为80/20、单体种类为二丙烯酸三丙烯乙二醇酯、光引发剂Benzil dimethyl ketal添加量为3%调配而成之UV涂料，其涂膜硬度、拉伸强度、光泽度及耐候性等性质优良，但涂膜耐冲击性、附著性不佳。

It was found that both the conversion and the initiating efficiency of methyl methacrylate polymerization system were decreased in the presence of small amounts of addition inhibitions 2,4,6-trinitrophenol or Benzoquinone, the system exhibited some retardation characteristics; at the same time, the molecular weights of obtained polymers was small and the molecular weight distributions was narrow, it was suggested that this polymerization system exhibited some ""living""/controlled radical polymerization characteristics.

发现在甲基丙烯酸甲酯的普通自由基聚合体系中加入少量的加成型阻聚剂2，4，6-三硝基苯酚或1，4-苯醌时，体系转化率降低，引发效率降低，呈现出一定的缓聚性质：同时得到的聚合物分子量变小，分子量分布变窄，具有一定的&活性&/可控的特征。

The best operational parameters were that the reaction temperature was 105℃, the reaction time was 3 hours, the mixture ratio of n: n=1:2.79, using N,N-dimethyl benzylamine as catalyst, and 2,6-Di-tert-buthyl-p-cresol as inhibitor.

结果表明，合成TGICA的最优化条件为：n/n=l：2.79；催化剂为N，N－二甲基苯胺；阻聚剂为2，6－二叔丁基对甲酚；反应温度(105±2)℃；反应时间3h。丙烯酸的转化率可达到99.7%。

The asymmetric polymerization of methyl methacrylate is carried out using the chiral binaphthyl crown ether macrocyclic compounds binding n-BuLi or t-BuOK as chiral initiator at -78℃.

以手性联萘冠醚为配体，络合n-BuLi，t-BuOK等有机金属化合物形成手性引发剂体系，初步探讨了甲基丙烯酸甲酯单体的聚合反应。

BIPHENOL A EPOXY RESIN;WATERBORNE EPOXY ACRYLIC RESIN;UV-CURING;MODIFICATION

双酚A环氧树脂；水性环氧丙烯酸树脂；UV固化；改性

Methods DA,Carbopol,dextrin,magnesium stearate,eudragˉit,titanium dioxide,yellowish pigment and diocytl phthalatewere mixed by certain technique.Then a kind of new bistratal durg-film was formed which contained both soluble and insoluble high polymer materal layer.Ingrediˉents of the film were measured and mucous membrane tests were done.

将醋酸地塞米松、卡波普、糊精、硬脂酸镁、丙烯酸树脂、二氧化钛、黄色素、邻苯二甲酸二辛酯等经一定工艺，形成由可溶性粘附性高分子材料及不溶性高分子材料组成的新颖双层粘贴片，并作含量测定及缓释透粘膜实验。

This paper is mainly about the studying and technology of a polymer graftted by organic silicon.This product has been used in the area of dop,bord,leather,papermaking,etc.

本文综述了近期国内7种有机硅丙烯酸系接枝聚合物的研究工艺技术，其产品现已广泛应用于涂料、粘合剂、皮革、纺织、造纸等行业。

5H-Thiazolo[3,2-a]pyrimidine can be efficiently prepared by the reaction of dihydropyrimidine-2-thione withα-bromoacetone,in water media.

在此反应体系中，2-氨基-5-芳氧亚甲基-1，3，4-噻二唑与丙烯酸酯反应，意外的得到环合产物—5H，6H-[1，3，4]噻二唑并[1，2-a]嘧啶-7-酮类衍生物。

Iodobenzene, bromobenzene and their derivatives reacted smoothly with n-butyl acrylate or styrene under phosphine-free reaction conditions in the presence of palladium acetate and fluoroquinolones.

碘苯、溴苯和其它芳基卤衍生物与丙烯酸丁酯、苯乙烯等取代乙烯类化合物在钯和氟喹诺酮的催化下发生Heck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。