Esterification behaviors of neo-polyhydric alcohols with fatty acids catalyzed by Brnsted acid catalysts,including sulfuric acid,phosphoric acid,p-toluenesulfonic acid,were compared.
比较了B r nsted酸,包括硫酸、磷酸、对甲苯磺酸,催化季戊四醇与脂肪酸的酯化反应行为,结果表明,硫酸催化酯化反应速率最快,能有效催化不同类型的新戊基多元醇与脂肪酸的酯化反应,羟基转化率达到98%以上。
Neopentyl glycol dimethylacrylate (NPGDA) like other multifunctional methacrylates is industrially important monomers for anaerobic adhesives, diluent monomer in dental composites, thread lockers, sealants and components for making soft contact lenses.
甲基丙烯酸新戊二醇酯(NPGDA)是功能性丙烯酸酯的一种,可用作过氧化交联﹑助交联剂,适用于乙丙胶等硫黄硫化困难的合成橡胶的硫化体系。
Preparation and properties of maleopimaric neopentyl glycol ester polyol;
马来海松酸新戊二醇酯多元醇的制备及性能
Because of its good lubricity , the polyol ester is ideal lubricating additive for low sulfur diesel fuel.
对醇、醚、胺、酰胺、羧酸和酯等低硫柴油润滑添加剂进行了综述,认为多元醇酯具有良好的润滑性,是低硫柴油理想的润滑添加剂。
It is introduced the anti-wear and extreme pressure properties of additive MT-10,the evaluating results by ball-on-cylinder test,gear oil scuff test and four-ball extreme pressure test show the anti-wear and extreme pressure properties of this additive are superior to those of polytetrafluorethylene(PTFE),dialkyldithiophosphate(ZDDP),tricresyl phosphate(TCP)and some packages in polyol ester.
介绍了MT-10添加剂的极压抗磨性能,球柱型磨损试验、齿轮油擦伤试验和四球极压性能试验结果均表明,该添加剂在多元醇酯中的抗磨极压性能优于聚四氟乙烯(PTFE)、二烷基二硫代磷酸锌(ZDDP)、磷酸三甲酚酯(TCP)和多种复合添加剂。
Since polyol ester is compatible with the flurine－free refrigerant， and therefore it is the best choice of lubricants． The demands of its versatile performances as well as the major problems in application are discussed． Miscibility， lubricity， thermal stability， chemical stability and low temperature performance are main quality indexes for lubricant evaluation
分析了与无氟冷冻剂相匹配的最佳首选润滑剂多元醇酯的各种性能要求以及存在问题。
Study on Esterification Behaviors of Neo-Polyhydric Alcohols with Fatty Acids Catalyzed by Sulfuric Acid
硫酸催化新戊基多元醇脂肪酸酯化反应行为研究
dibromomononepentyl glycol
二溴-新戊基乙二醇
bicyclopentadiene dioxide polyol ether resin
二氧化双环戊二烯多元醇醚树脂
Kinetic Study of Solid-solid Transition in Polyhydric Alcohol and the PG/NPG Binary System;
三羟甲基乙烷、新戊二醇及其二元体系固—固相变贮热的动力学研究
Study on the Synthesis of Neopentyl Glycol Dimethylacrylate over Solid Acid Catalysts;
固体酸催化合成甲基丙烯酸新戊二醇酯的研究
Tetra-hydroxy polyether polyols
GB/T16577-1996四羟基醚多元醇
Study on Synthesis Technology of a New Type Diol-2-Methyl-1, 3-Propanediol;
新型二元醇（2-甲基-1，3-丙二醇）合成研究
Study on the Synthesis of Neopentyl Glycol Dimethylacrylate over Eco-friendly Catalysts;
二甲基丙烯酸新戊二醇酯的绿色催化合成工艺研究
Protective Roles of Valproate Sodium on Apoptosis of Dopaminergic Neuron Induced by 6-OHDA;
丙戊酸钠对6-羟基多巴胺诱导的多巴胺能神经元凋亡的保护作用
Production Status and Market Analysis of Dimethyltrimethylene Glycol at Home and Abroad;
国内外新戊二醇生产现状及市场分析
Tri-hydroxy polyether polyols
GB/T16576-1996三羟基聚醚多元醇
Octahydroxy polyether polyols
GB/T15594-1995八羟基聚醚多元醇
Studies on Solid-Solid Phase Transitions of TAM, PE and TAM/PE by Infrared Spectroscopy at Various Temperatures
三羟甲基甲胺、季戊四醇及其二元体系固-固相变的变温红外光谱研究
Toxicological Studies on 4,4-Bis (difluoramino) pentanol
4,4-双(二氟胺基)戊醇的毒性研究
Synthesis of 2-Methyl-4-Penten-2-Ol in One-Step Process
一步法合成2-甲基-4-戊烯-2-醇
"Glycols (e.g., ethylene glycol, or antifreeze) contain two hydroxyl groups, glycerol three, and polyols three or more. See also alcoholic Beverage, alcoholism. "
甘醇(如乙烯甘醇或防冻剂)有两个羟基,丙三醇有三个羟基,多元醇则有三个或三个以上羟基。
Association between genetic polymorphism of sterol regulatory element-binding protein-1c and Uygur patients with coronary heart disease in Xinjiang
固醇调节元件结合蛋白-1c基因54G/C多态性与新疆维吾尔族冠心病的相关性
Synthesis of Novel Free Radical Initiator Dimethyl Azobisisobutyrate(AIBME) and Its Application in Polymeric Polyol Production
新型自由基引发剂偶氮二异丁酸二甲酯的合成及其在聚合物多元醇生产中的应用