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We investigated constituent of triterpenoid saponins ofAlbizzia, two new compounds together with two known compounds were isolated from Albizzia julibrissin Durazz. by using column chromatography (macroreticular resin, silica gel, Sephadex gel, reverse phase silica gel),preparative HPLC methods et al.On the basis of spectroscopic analysis, including IR,ESI-MS,~1H-NMR,~(13)C-NMR,HMBC,HMQC,~1H-~1HCOSY and chemical methods, the structure of two new compounds were identified as 3 - O -[β-D-xylopyranosyl(1→2)-β-D-fucopyranosyl (1→6)-β- D -2- deoxy - 2 - acetoamidoglucopyranosyl] -21-O-[(6S)-2- trans- 2,6-dimethyl - 6 - O-β- D - quinovopyranosyl -2,7- octadienoyl] - acacic acid- 28 - O-β-D-glucopyranosyl(1→3)[α-L-arabinofuranosyl(1→4)]-α-L-rhamnopyranosyl(1→2)-β-D-glucopyranoside acacic acid 3- O -β- D- glucopyranosy(1→3)-β- D- fucopyranosl(1→6) [β-D- xylopyranosyl (1→2)]-β-D-glucopyranoside ;two known compounds were acacic acid lactone 3- O -β-D- xylopyranosyl-(1→2)-β-D-fucopyranosl (1→6)- 2-deoxy -2 -acetoamido -β-D- glucopyranoside ; acacic acid lactone 3- O-β-D-xylopyranosyl(1→2)-α-L- arabinopyranosl (1→6)- 2- deoxy - 2- acetoamido -β-D-glucopyranoside . The study lays chemical foundation and chemical reference substance for enhancing quality standard of Albizzia julibrissin Durazz.

本研究论文在综述国内外对合欢属Albizzia三萜皂苷化学成分和药理作用研究进展的基础上,利用传统植化分离手段和现代分离技术,包括大孔树脂、硅胶、葡聚糖凝胶、反相硅胶等柱色谱,制备高效液相色谱法等技术从中药合欢皮中分离得到了4个化合物,其中,2个新化合物和2个己知化合物,并进一步通过现代分析技术IR,ESI-MS,~1H-NMR,~(13C-NMR,HMBC,HMQC,~1H-~1HCOSY等和化学方法鉴定了2个新化合物的结构分别是:3-O-[β-D-吡喃木糖基(1→2)-β-D-吡喃夫糖基(1→6)-β-D-2-去氧-2-乙酰氨基吡喃葡萄糖基]-21-O-[(6S)-2-反式-2,6-二甲基-6-O-β-D-吡喃鸡纳糖基-2,7-辛二烯酸基]-金合欢酸-28-O-α-L-呋喃阿拉伯糖基(1→4)[β-D-吡喃葡萄糖基(1→3)]-α-L-吡喃鼠李糖基(1→2)-β-D-吡喃葡萄糖苷,金合欢酸3-O-β-D-吡喃葡萄糖基(1→3)-β-D-吡喃夫糖基(1→6)[β-D-吡喃木糖基(1→2)]-β-D-吡喃葡萄糖苷;2个已知化合物结构分别是:金和欢酸内酯3-O-β-D-吡喃木糖基(1→2)-β-D-吡喃夫糖基(1→6)-β-D-2-去氧-2-乙酰氨基吡喃葡萄糖苷,金和欢酸内酯3-O-β-D-吡喃木糖基(1→2)-α-L-吡喃阿拉伯糖基(1→6)-β-D-2-去氧-2-乙酰氨基吡喃葡萄糖苷。

The present invention provides an aqueous adhesive composition including a resinous phase dispersed in an aqueous medium, the resinous phase containing a polychloroprene, optionally, a halogenated polyolefin different from, and optionally, an aminoplast resin.

本发明提供了包括分散于水性介质中的树脂相的水性粘合剂组合物,该树脂相包含聚氯丁二烯;任选的不同于的卤化聚烯烃;和任选的氨基塑料树脂。

PVC resin, PTFE resin, fumaric acid, anthraquinone, nitroanthraquinone, paraaminophenol, melamine, cyanuric acid, sulfanilic acid, chemical inhibitor 168, azoic coupling component As, stearate, aniline, nitroaniline, pentaerythritol, chlorcosane, sodium calcium, triethylene diamine, sodium benzene sulphinate, m-phthalic acid, thiourea, aniline black dyestuffs, acid dyestuff, etc.

聚氯乙烯树脂、聚四氟乙烯树脂、反丁烯二酸、蒽醌、硝基蒽醌、对氨基苯酚、三聚氰胺、氰尿酸、对氨基苯磺酸、抗氧剂168、色酚As、硬脂酸盐、苯胺、硝基苯胺、双季戊四醇、氯???腊、甲酸钙、三乙烯二胺、苯亚磺酸钠、间苯二甲酸、二甲酯五磺酸钠、硫脲、油溶性苯胺黑染料、酸性黑染料等有机化工原料和中间体。

Resins: gum dammar; PU dispersion; silicone resin, epoxy resin, alkyd, acrylic Resin, polyester resin, urethane resin, polyamide resin, amino hardener; two pack hydroxy acrylic, two pack isocyanate-free acrylic; vinyl chloride co-polymers, polyvinyl butyrals, thixotropic resin.

树脂类:达玛树脂;水性PU分散体;有机硅、环氧、醇酸、丙烯酸、聚酯、聚氨酯、聚酰胺、氨基固化剂;双组份羟基丙烯酸、双组份不含异氰酸脂丙烯酸;聚氯乙烯共聚物、聚乙烯醇缩丁醛、触变性树脂。

Results show that treating the pear juice with FPC-21 resin can reduced pH value, formol index and browning index. Reduction of pH value enhence the decolor ability of XAD-16 resin on pear juice. Reduction of pH value and formol index can control the browning rate of PJC during storage.

结果显示,阳离子树脂处理可降低酥梨汁的pH值、氨基态氮和褐变指数;降低pH值可提高吸附树脂对酥梨汁的脱色能力;降低pH值、氨基态氮可控制70 °Brix浓缩酥梨汁贮存中褐变速度。

The nickelous chloride both may use in to galvanize, and is prepares the galvanization chemical thionamic acid nickel the important raw material, lead is affects the electronickelling quality a important attribute, in the present industry 331 ion exchange resin deleading effect still could not arrive in the electronickelling the lead content standard, used pocket weak basicity resin XSC312 after the screening experiment determination to take from the nickelous chloride solution intermediate ion exchange except the micro lead resin, inspected the material fluid pH value, the contact duration in the ionic exchange column to the ionic exchange adsorption lead influence, has determined the resin adsorption capacity and inspected the resin analysis performance.

氯化镍既可用于电镀,又是制备电镀化学品氨基磺酸镍的重要原料,其中的铅是影响电镀镍质量的一个重要因素,现行工业中的331离子交换树脂除铅效果尚不能到电镀镍中铅含量标准,经过筛选试验确定采用大孔弱碱性树脂XSC312作为从氯化镍溶液中离子交换除微量铅树脂,在离子交换柱中考察了料液pH值、接触时间对离子交换吸附铅的影响,测出了树脂的吸附容量并考察了树脂的解析性能。

Water-based resin approximately150, such as Rosin monomaleate monomaleate, styryl, acrylic copolymer resins, such as aminosulfonic ethylacrylate, emulsio, that is, there is a water-based dispersion resins, vinyl acetate copolymer, acrylic copolymer, polyurethane resin, epoxy resin, etc.

水性树脂的种类很多,如松香马来酸树脂、苯乙烯马来酸树脂、丙烯酸共聚物、氨基丙烯酸乙酯等,高分子乳液,即水性分散树脂,有醋酸乙烯共聚物、丙烯酸共聚物、聚氨酯树脂、环氧树脂等。

KAWOMURA R inert pigments are suitable for the following polymer systems,like, silicone resins, amino resins,acrylics, poly esters,HDPE / PP, polycarbonate ,PVC, chloride ethylene, etc..

KAWOMURA R 惰性颜料适合应用的聚合物体系有:有机硅树脂、氨基类树脂、丙烯酸树脂、聚酯类树脂、高密度聚乙烯/聚丙烯、聚碳酸酯、聚氯乙烯树脂、氯化橡胶树脂等等。

Unsaturated polyester resins are the most widely used resin type for composites, comprising in excess of 80% of all thermoset resins (others being epoxies, phenolics, acrylics, imides, and urethanes).

不饱和聚酯树脂是复合材料使用树脂类型中应用最广泛的一种,也是热固性树脂最常用的一种(其它种类热固性树脂包括环氧树脂、酚醛树脂、丙烯酸树脂、酰亚胺树脂以及氨基甲酸乙酯)。

The primary amine of DETA is closed by ethyl methyl ketone to reduce the reactivity of –NCO group and –NH2 group and smooth the reaction process. The mole ratio value of –NH2/-NCO should be 2.2 to make sure that –NCO group is completely closed in by –NH2 group and amine terminate compound is prepared. The reaction temperature, reaction time and the way of adding raw materials to vessel are discussed. Structure and performance of the resin are analyzed with infrared ray spectrum.

用甲乙酮封闭DETA分子中的伯胺基团,降低-NCO与-NH2的反应活性,使反应平稳进行;研究投料比和投料方式对反应的影响;为确保生成以氨基封端的聚氨酯树脂,并将游离的异氰酸酯反应完全,最佳原料投料比控制在-NH2/-NCO=2.2;确定合理的合成条件如反应温度、时间等;利用红外光谱分析端氨基聚氨酯树脂的结构与性能。

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