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isobutyric acid anhydride 异丁酸酐
Isoamyl betyrate was synthesized from isobutyric acid and isoamyl alcohol using ammonium ferric sulfate as a catalyst in the yield of 96.5%. 以十二水合硫酸铁铵为催化剂,由丁酸和异戊醇合成了丁酸异戊酯,优化了酯化条件。
Four kinds of compounds including n-propanol, ethyl acetate, ethyl decylate and isobutyric acid were selected for recovery rate determination (recovery rate be... 该法实用、简便,可在葡萄酒研究和生产管理上推广使用。
N-Carboxy-alanine acid anhydride (NCA) was synthesized by L-alanine and Triphosgen. 摘要利用L-丙氨酸和三聚光气反应制备了N-羧基-丙氨酸-环内酸酐(NCA)。
Phosphorus Pentoxide, also called Phosphoric Acid Anhydride, is a white, spiculate crystal. 五氧化二磷又名磷酸酐，白色针状晶体。
The organic compounds are mainly benzoic acid anhydride, benzophenone, and so on. 生成的有机化合物成分比较复杂,主要成分有苯甲酸酐、二苯甲酮等。
Compared with the amine curing agent, the casting epoxy resin cured by the acid anhydride has higher flashover voltage. 实验结果表明:酸酐固化的试样比胺类固化试样闪络电压要高；
The effects of the poly(l,2-butadiene) oligomer carboxylated with maleic acid anhydride (MLPB) on the cork powder filled NBR and on the IIR recipes were researched in this paper. 本文简要介绍了马来酸酐化聚丁二烯(MLPB)在软木填充丁腈橡胶制品和丁基橡胶配方改性中的应用效果。
Isoamyl betyrate was synthesized from isobutyric acid and isoamyl alcohol using ammonium ferric sulfate as a catalyst in the yield of 96.5%. The reaction conditions were advantageous and succinct. 以十二水合硫酸铁铵为催化剂;由丁酸和异戊醇合成了丁酸异戊酯;优化了酯化条件。实验结果表明;催化剂的催化活性高;反应条件温和;易于操作;方法简便;酯化率可达96.;5%25。
Maleic anhydride is the important organic chemical material, is the third largest acid anhydride behind the phthalic anhydride and acetic anhydride. 顺丁烯二酸酐，简称顺酐或者马来酐，是重要的有机化工原料，是仅次于苯酐和醋酐的第三大酸酐。
Phthalein acid anhydride Photophobic pharmaceutical and has special protective action on the ultraviolet ray. It can cure sunlight dermatitis, eczema, etc. 酞酐避光剂，对紫外线具有特殊的保护功效，可治疗日光性皮炎，湿疹等。
A lot of decomposition products are formed, such as dioxoimidazole, dioxopiperazine, acid anhydride, cyanuric acid, ammonium, four, five and six-membered ring lactam etc. 可能产生二氧咪唑环、毗嗪二酮、尿氰酸、铵盐及四元环、五元环和六元环内酰胺结构的产物。
The adhesive made of epoxy resin, polyazelaic acid anhydride, 2,4-methylimidazole and modified agent.It can be solidified quickly at the middle temperature. 以环氧树脂、酸酐、咪唑等为主要原料并添加改性剂，配制了一种能在中温下快速固化的胶粘剂；
In this paper, the various kinds of accelerators which were used for curing epoxy resin with acid anhydride, and the accelerative mechanism in the epoxy resin curing system were introduced. 摘要评述了几类用于酸酐固化环氧树脂的促进剂及其在酸酐/环氧体系中的固化促进机理。
Arsenous oxide;Arsenic trioxide;Arsenious acid anhydride;White arsenic;acide arsenieux;anhydride arsenieux; ... 氧化亚砷;三氧化二砷;亚砷酐;砒霜;白砒香港
Keywords Isobutyric acid;Alkyl isobutyrate;Isobutyric anhydride;Alkylation; 异丁酸;异丁酸酯;异丁酸酐;烷基化反应;
Manufacturing Technology of Isobutyric Acid Made from Isobutyric 异丁醛氧化制异丁酸的工艺
The plasticizer-butyl benzyl phthalate(BBP) is synthesized by orthogonal experiments designed using benzoic acid anhydride, butanol and benzyl chloride with cetyltrimethyl ammonium bromide(CTMAB) as phase transfer catalyst. 以CTMAB为相转移催化剂,苯酐、正丁醇和苄氯为原料合成BBP的新方法。通过设计正交实验,对原料配比、反应时间、催化剂用量、pH值和加水量等影响因素以及催化剂的回收利用进行了研究。
Keywords Yunweiling capsule;Thyme;Isobutyric acid thyme; 云威灵软胶囊;百里香酚;异丁酸百里香酯;
The effects of the poly(1,2-butadiene)oligomer carboxylted with maleic acid anhydride(MLPB) on the cork powder filled with NBR and on the IIR formula were researched in this paper. 简要介绍了马来酸酐化聚丁二烯(MLPB)在软木填充丁腈橡胶制品和丁基橡胶配方改性中的应用效果。