二元醇

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  • dihydric alcohol
二元醇二元醇
  1. 2,2-二羟甲基丙酸(DMPA)是染料及农药的中间体,还可以制成一系列的DMPA的酯类和金属盐类,也可用来合成受阻酚类抗氧剂,DMPA作为一种二元醇可以参加缩聚反应。

    2 , 2-Dimethylolpropionic acid is an intermediate for dyes and pesticides . It can be used to synthesize a series of esters and metal salts of DMPA and also be used to synthesize hindered phenolic antioxidants . DMPA can join polycondensation reaction as a dihydric alcohol .

  2. 气相色谱法对净化二元醇的定性定量分析

    Qualitative and Quantitative Analyses of Purified Dihydric Alcohol by Gas Chromatography

  3. Ru催化剂氢解甘油制备二元醇的研究进展

    Advance in preparation of diols by ruthenium catalytic hydrogenolysis of glycerol

  4. 以HCl为催化剂,合成了脂肪族二元醇单胆酸酯(2~5)。

    Cholates ( 2 ~ 5 ) were prepared using HCl as a catalyst .

  5. 实验表明,(1)聚醚二元醇与TDI、聚醚三元醇与端NCO预聚体的反应同为二级反应。

    The reaction between polyether diol and TDI , polyether triol and NCO terminated prepolymer were of second order ;

  6. 在聚醚型PUA中以三羟甲基丙烷和马来酸酐为原料,合成了一种新的亲水二元醇(T-M)。

    As for polyether PUA , a new hydrophilic diol ( T-M ) was synthesized from trimethylol propane and maleic anhydride .

  7. 通过密度泛函理论模型计算研究了单体、二聚体和三聚体的结构,总结了HO(C)3OH结构对二元醇分子自聚集的影响规律。

    Structures of monomers , dimers and trimers were studied by density functional theory ( DFT ) . The effect of HO ( C ) 3OH structure on diol self-association was summarized .

  8. 通过选用不同类型和不同分子量的二元醇预聚物作为中间体,合成一系列双官能团的PUA树脂。

    This paper studies the synthesis of a series of PUA resin with two functional group by selecting the different polyols kinds and the different molecular weight polyols .

  9. 将钌改性的固体催化剂Ru-Co(OH)2-CeO2用于以分子氧作为氧化剂的二元醇的催化氧化内酯化反应中,发现该催化剂具有很好的催化反应性能。

    Ruthenium-modified solid catalyst Ru-Co ( OH ) 2-CeO2 was applied to the lactonization of diols in the presence of molecular oxygen and achieved highly efficient catalytic performance .

  10. 结果表明,一元醇能提高DBMA的表面活性,二元醇使DBMA的表面活性略有下降。

    Results show that monobasic alcohol raise surface activity and diatomic alcohol little decrease suface activity .

  11. 采用二步法以聚己二酸丁二醇酯(PBA)、4,4-二苯基甲烷二异氰酸酯(MDI)和二元醇1,4-丁二醇或三元醇混合扩链剂合成了聚氨酯(PU)弹性体。

    Aseries of polyurethaner ( PU ) elastomer were synthesized from poly ( tetramethlene adipate ) glycol , 4,4 ' - diphenyl-methane-diisoyanate ( MDI ) , 1,4-butanediol ( BDO ) or trimethylolprpane ( TMP ) .

  12. 采用聚酯二元醇与甲苯二异氰酸酯(TDI)和二羟甲基丙酸(DMPA)反应合成水性聚氨酯分散体,进一步制成涂料。

    The waterborne polyurethane dispersion was synthesized by the reaction of polyester glycol with toluene diisocyanate ( TDI ) and dimethylolpropionic acid ( DMPA ), and the coatings can be made based on it .

  13. 分别以聚乙二醇(PEC)、聚已二酸丁二酯二元醇(PBA)及两者的混合物作软段溶液聚合合成了三种类型的聚氨酯酰亚胺(PUI)。

    Three typs of polyurethane-imides ( PUI ) were synthesized with polyethylene glycol ? poly ( butylene adipate ) glycol and the mixture of them as the soft segments respectively by solution polymerization .

  14. 采用预聚合法,以聚酯二元醇(PEA)、甲苯二异氰酸酯(TDI)、二羟甲基丙酸(DMPA)为基本原料合成了分子链上带有亲水基团(-COOH)的聚氯酯预聚体。

    Polyethylene glycol adipate ( PEA ), toluene diisocyanate ( TDI ), dimethylol propionic acid ( DMPA ) were used as main raw materials to synthesize polyurethane prepolymer whose molecular chain have hydrophilic group ( - COOH ) .

  15. 采用1,4-丁二醇、马来酸酐、月桂醇为主要原料和环境友好的工艺路线,合成了一种易降解的双子(Gemini)表面活性剂&二元醇双琥珀酸双酯磺酸钠(GMI-02)。

    A new type of easily degradable Gemini surfactant ( GMI-02 ) was synthesized from cheap materials such as 1,4-butanediol , maleic anhydride and lauric alcohol through environmentally-friendly processes .

  16. 在石油酸与二元醇的摩尔比为2.2时,氧化亚锡用量占石油酸用量的2%,反应4h可使二元醇羟基的酯化率达99%。

    If the molar ratio of acid to dibasic alcohol is 2.2 , the quantity of SnO to acid is 2 % , and the reaction time is 4 h , the yield of diesters can reach 99 % .

  17. 根据溶胶-凝胶原理,采用聚酯二元醇、异佛尔酮二异氰酸酯(IPDI)、二羟甲基丙酸(DMPA)、钛酸四丁酯(TET)制备了水性聚氨酯-纳米TiO2复合乳液。

    The waterborne polyurethane-nano TiO_2 compound emulsion was prepared by the reaction of tetrabutyltitanate ( TET ) with polyester diol , dimethylol propionic acid ( DMPA ), isophorone diisocyanate ( IPDI ) based on the principle of sol-gel process .

  18. 四氢呋喃共聚型GAP粘合剂的合成分两个步骤:a.通过四氢呋喃(THF)和环氧氯丙烷(ECH)在BF3·加二元醇催化下的阳离子开环聚合反应合成端羟基THF-ECH共聚醚;

    The synthesis of tetrahydrofuran copolymerized GAP binder includes two steps : THF and ECH ( epichlorohydrin ) are copolymerized with the help of catalyst ( BF3 · + diol ) through cation ring opening copolymerization to hydroxyl terminated THF-ECH copolyethers ;

  19. 采用TDI与聚酯二元醇(T1136)和二羟甲基丙酸(DMPA)反应合成水性聚氨酯分散体,讨论了合成工艺、反应温度和时间对聚氨酯分散体性能的影响,并确定了反应温度和时间。

    Aqueous polyurethane dispersion was synthesized by the reaction of toluene diisocyanate ( TDI ) with polyester glycol ( T1136 ) and dimethylolpropionic acid ( DMPA ) . The effects of the preparation technique , the reaction temperature and time on the properties of aqueous polyurethane dispersion were investigated .

  20. 不同二元醇制备的4种脂肪/芳香共聚酯的性能研究

    Properties of four aliphatic / aromatic copolyesters based on different diols

  21. 微波&二元醇技术制备Au/TiO2及其光催化消除臭氧

    Preparation of Au-loaded TiO2 by Microwave-Glycol and Ozone Photocatalytic Decomposition

  22. 含羧基半酯二元醇的合成及稳定性研究

    Study on Synthesis and Storage Stability of Carboxyl Monoester Diols

  23. 醇水体系渗透汽比膜分离过程的溶解-扩散模型二元醇/水溶液在渗透蒸发均质膜中的扩散模型

    A diffusion model of binary alcohol / water mixtures through pervaporation dense membrane

  24. 二元醇扩链嵌段聚醚氨酯的合成、性能及医学应用

    Synthesis , properties and biomedical application of segmented polyether urethane extended with diol

  25. 离子液体催化醛与二元醇的缩醛化反应

    Acetalization of aldehydes with diols catalyzed by ionic liquids

  26. 有机合成中二元醇的选择性单官能团保护

    The Selective Protection of Dihydric Alcohol in Organic Synthesis

  27. 甘油氢解制二元醇碳纳米管促进型铜锌催化剂的研究

    A Study of Carbon Nanotubes-Promoted Cu-Zn Catalyst for Hydrogenolysis of Glycerol to Glycols

  28. 聚醚二元醇不饱和聚酯树脂及其柔性固化体系

    Studies on flexible unsaturated polyester resin from polyether glycol and its flexible curing system

  29. 用二聚酸聚酯二元醇制备高固体物含量聚氨酯分散体

    High solid content polyurethane dispersion synthesized with polyester polyol based on dimer fatty acid

  30. 功能化离子液体在室温下催化醛(酮)与二元醇的缩合反应

    Acetalization of aldehydes ( ketones ) with diols catalyzed by functional ionic liquids under room-temperature