SYNTHESIS OF ELECTROPOLY MERIZABLE AND

ＳＹＮＴＨＥＳＩＳＯＦＥＬＥＣＴＲＯＰＯＬＹＭＥＲＩＺＡＢＬＥＡＮＤＥＬＥＣＴＲＯＡＣＴＩＶＥ４，４′┐ＢＩＰＹＲＩＤＩＮＩＵＭＳＡＬＴＳＺｈａｏＷｅｎｙｕａｎＭｅｎｇＸｉａｎｇｙｉｎｇＷａｎｇＹｉｊｕｎ（ＱｉｎｇｄａｏＵｎｉｖｅｒｓｉｔｙ，Ｄｅｐ...     

SYNTHESIS AND STRUCTURE OF HYDRATED LANTHANUM CARBONATE

以碳酸氢铵为沉淀剂合成了碳酸镧晶体。经Ｘ射线衍射测定，晶体属正交晶系，晶胞参数ａ＝０．８４８７ｎｍ，ｂ＝０．９５６４ｎｍ，ｃ＝０．４４８６ｎｍ。其结构与文献中提到的镧石型稀土碳酸盐的结构相接近。碳酸镧的红外光谱说明其内部存在着非等价的碳酸盐群。碳酸镧在热分解过程中，存在着稳定的中间产物Ｌａ２Ｏ３·ＣＯ２。     

SYNTHESIS OF PLASTIC PIGMENT WITH MULTIHOLLOW STRUCTURE

INTRODUCTIONIn recent years, seeded emulsion polymerization was often used to synthesis polymer/polymer composite particles used in many industrial field, such as in painting, print, coating and so on. Moreover, recently ,attention has been focused on the latex particle possessing hollow structure(1～4). For example, P(St -MAA) polymer particles was changed to those having hollow structure by alkali treatment, following by being cooled to room temperature, which was named as alkali/cool…     

THE SYNTHESIS AND IDENTICATION OF DABS-CI REAGENT

In this paper, we are to report that the 4-dimethylamino azobenzene-4‘-sulfonyl chloride (DABS-CI) can be directly synthesized by the reaction of 4-dimethylaminoazobenzene-4‘-sulfonyle with phosphorus pentachloride, from which the yield is higher than from chlorosulfonation. (l) The experimental procedure is simple, and the quality and purity determined by I. R. spectra, X-ray diffraction reach, even surpass the same products by SERV A (German) in some respects.     

STUDY OF MODIFIED AROMATIC POLYAMIDE SYNTHESIS AND CHARACTERISTICS OF CHLORINATED PPTA

Super pure 2,5-dichloroterephthaloyl dichloride (DDC) was prepared by chlorination andcontrolled by Gas Chromatography(GC) method. As a third monomer, DDC waspolycondensated into chlorinated PPTA together with terephthaloyldichloide (TPDC) andparaphenylene diamine (PPDA). The polycondensation conditions and the relationship betweenthe thermal behavior, viscosity, solubility, phase transition temperature of the modifiedpolyamide and the third monomer content discussed in this paper.     

SYNTHESIS OF AI,OO AND DB APPROACHES

ＳＹＮＴＨＥＳＩＳＯＦＡＩ，ＯＯＡＮＤＤＢＡＰＰＲＯＡＣＨＥＳＭａＹｕｓｈｕＨｕＨａｉｆｅｎｇ（ＡＩＲｅｓｅａｒｃｈＣｅｎｔｅｒｏｆｔｈｅＵｎｉｖｅｒｓｉｔｙｏｆＰｅｔｒｏｌｅｕｍ，ＣｈｉｎａＢｅｉｊｉｎｇ１０２２００）ＢＡＲＴＨＥＳＪｅａｎ．Ｐａｕ...     

SYNTHESIS AND CHARACTERIZATION OF MONOVALENT AND MIXED-VALENCE COMPLEXES OF COPPER WITH 2-THIOURACIL

Five polynuclear monovalent and mixed-valence complexes of copper with 2-thiouracil were synthesized. They were characterized by the molar conductivity, electromc spectra, infrared spectroscopy, thermogravimetric and magnetic susceptibility measurements. Their coordination properties and tentative structures were discussed.