用对甲苯磺酸酸式水解烃羧酸甲酯基和烃羧酸高碳醇酯基双官能基硅油,并和碱性水解的效果比较。
The modified silicone was hydrolysed by toluene-p-sulfonic acid, and the hydrolysis ratios in acid and base were compared.
本文介绍了用重氮转移法合成具有较大空间位阻的重氮乙酸二环己基甲酯、L- 薄荷酯和叔丁酯。
Synthesis of sterically hindered dicyclohexylmethyl, L menthyl and tert butyl diazoacetate by diazo transfer was described on this paper.
目的:探讨微波加热法处理聚甲基丙烯酸甲酯(pmma)基托材料的力学性能。
Objective: To study the mechanical properties of microwave cured polymethylmethacrylate (PMMA) denture base resins.
制备MPOF的原料选用甲基丙烯酸甲酯(MMA),通过对聚合方法和聚合机理的分析,确定采用加压本体自由基聚合技术。
MMA is selected as raw material of the preparation of MPOF. Compressed bulk free radical polymerization is adopted by means of analyzing polymerization method and polymerization mechanism.
本工作定量测定了2-乙烯基吡啶-甲基丙烯酸甲酯-铑络合物的烯烃催化加氢性能与共聚物配体序列结构的关系。
The quantitative relationships between the catalytic ability of Rh-complex of 2-vinyl pyridine-methyl methacrylate copolymer and the sequence structures of the copolymer ligands have been determined.
目的:研究碳纤维织布增强聚甲基丙烯酸甲酯(PMMA)基托的机械性能。
Objective:To study the mechanical properties of the PMMA denture -base enhanced by carbon fiber cloth.
乙酰基丁二酸二甲酯是一种重要的有机化工中间体,广泛用于医药、农药、染料、食品添加剂和基础研究等领域。
Dimethyl Acetylsuccinate (DMAS) was an important organic chemical intermediate, and widely used in the fields of pharmaceuticals, pesticide, pigment, dyes and organic synthesis research etc.
聚甲基丙烯酸甲酯是临床上最常用的义齿基托材料。
Polymethyl methacrylate is the most frequently used denture base material in clinic.
介绍了以精制玉米油经甲酯化、酰胶化、酯化和磺化四步合成脂肪酸胺磷基琥珀酸单酯盐的研究。
Introduces the research of synthesis alkanolamide sulfosuccinic acid monoester from refined corn oil by methyl-esterification, amidation, esterification and sulfonation.
通过紫外光引发甲基丙烯酸甲酯的接枝聚合,在聚丙烯膜表面引入了反应性基团酯基。
The surface of polypropylene microporous membranes was activated by the graft polymerization of methyl methacrylate initiated with ultraviolet-photo.
甲酸甲酯氢解制甲醇这一步骤的难点在于环境友好的低温高活性铜基催化剂的研制。
Hydrogenolysis of methyl formate to methanol was the rate-determining process and was mainly catalyzed by nickel-based or copper-based catalyst system.
以二乙烯基苯为交联剂,由甲基丙烯酸甲酯、苯乙烯、甲基丙烯酸模型浇铸共聚,制得了一种交联型改性有机玻璃。
A kind of crosslinking modified organic glass was prepared by mold copolymerization of methyl methacrylate, styrene, methacrylic acid with divinylbenzene as crosslinking agent.
玻璃基无机生物水泥在生物活性和使用的可靠性与安全性等方面,胜过现有的聚甲基丙烯酸甲酯(PMMA)骨水泥。
Glassbased biocement(GBC) in an inorganic bone cement which prevails over polymethylmethacrylate(PMMA) cement in the properties of bioactivity, fixation reliability and performance safety.
三元树脂由乙烯基磺酸酯、甲基丙烯酸甲酯(MMA)与甲基丙烯酸(MAA)按不同的配比共聚而成。
The polymer was prepared by copolymerizing vinyl sulfonate, methyl methacrylate(MMA) and methacrylic acid(MAA) in different proportions.
根据缩合原理,研究并提出了“克兰逊”催化缩合法,通过特性触煤合成了乙氧基甲叉基丙二酸二乙酯产品,提高了产品质量及回收率。
Through the peculiarity contact-coat, composes the ethoxy methylene propane dioic acid dio-ethylest which improves the quality and yield of the product.
以溴代环己烷和苯甲酸乙酯为原料,经过两步反应合成了甲基丙烯酸二环己基苯甲酯。
With bromocyclohexane and ethyl benzoate as raw materials, dicyclohexylphenylmethyl methacrylate was synthesized by two steps.
本文对乙酰基丁二酸二甲酯合成的反应机理、合成路线及其优缺点进行了评述,重点讨论了目前工业上所用的合成工艺及其改进的方向。
The reactive mechanisms of DMAS and several synthetic routes were reviewed. The methods applied in commercial production of DMAS were discussed in detail.
十分有趣的是该体系对甲基丙烯酸甲酯进行光敏自由基引发聚合的速率和其光解反应速率有很大的不同,本文对此现象进行了讨论。
It is interesting to find that the rate of photo-polymerization of MMA initiated by this system was different from the rate of photolysis. This phenomenon was discussed briefly.
以丙烯酸、 丙烯酸丁酯和甲基丙烯酸甲酯为单体,采用自由基聚合法制备了聚丙烯酸卷材涂料前驱成膜物,获得了适宜的制备工艺条件。
Phragmoplast of coil coating has been prepared by free radical polymerization and by using acrylic acid, methyl methacrylate, butyl acrylate as the raw materials.
方法用自由基聚合法合成壳聚糖-甲基丙烯酸甲酯共聚物,该聚合物在水中形成具有疏水核心、亲水表面的纳米粒。
METHODS The chitosan-methylmethacrylate copolymers were synthesized by free radical polymerization, and the copolymer formed nanoparticles consisted of hydrophobic core and hydrophilic surface.
咖啡酸甲酯和3,4 -二乙酰基咖啡酸能突破血脑屏障具有脑靶向性特点。
Methyl ester of caffeic acid and 3, 4-diacetyl-caffeic acid can cross the BBB and can thus be used as brain targets.
以溴戊烷、溴己烷、1,2-二溴乙烷和亚磷酸三甲酯为原料,分别合成了戊基、己基、溴乙基取代的三种膦酸二甲酯化合物。
In this paper, three alkyl substituted dimethyl phosphonates have been synthesized by trimethyl phosphite with 1-Bromopentane, 1-Bromohexane and 1,2-Dibromoethane.
以液态聚硫橡胶、异氟尔酮二异氰酸酯和扩链剂3,6 -二甲硫基-2 ,5 -二甲苯胺为原料,合成了不同硬段质量分数的聚硫硫代聚脲。
A series of polysulfide based thio-polyurea was synthesized, which were based on isophorone diisocyanate, liquid polysulfide and 2,5-diamino-3,6-dimethylmercapto toluene.
以N-甲基乙酰胺、醋酸乙烯酯为原料,N,N-二甲氨基吡啶(DMAP)为催化剂,合成N-甲基-N-乙烯基乙酰胺。
N-Methyl-N-vinylacetamide was synthesized from N-methylacetamide and vinyl acetate with N, N-dimethylamino pyridine (DMAP) as catalyst.
十分有趣的是该体系对甲基丙烯酸甲酯进行光敏自由基引发聚合的速率和其光解反应速率有很大的不同,本文对此现象进行了讨论。
It is interesting to find that the rate of photo-polymerization of MMA initiated by this system was different from the rate of photolysis. This phenomenon was d...
十分有趣的是该体系对甲基丙烯酸甲酯进行光敏自由基引发聚合的速率和其光解反应速率有很大的不同,本文对此现象进行了讨论。
It is interesting to find that the rate of photo-polymerization of MMA initiated by this system was different from the rate of photolysis. This phenomenon was d...
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