二元醇
- dihydric alcohol
-
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 .
-
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
-
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
-
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 .
-
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 ;
-
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 .
-
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 .
-
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 .
-
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 .
-
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 .
-
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 ) .
-
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 .
-
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 .
-
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 ) .
-
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 .
-
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 % .
-
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 .
-
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 ;
-
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 .
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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