A composition useful for dispersing asphaltenes in crude oil comprising: (a) 0.001% to 0.2% of at least one reaction product of: (i) an amine; and (ii) a carboxylic, phosphonic or sulfonic acid; and (b) crude oil.Ravindranath Mukkamala...
【胺的反應,Reaction of Amine】 (一)胺的鹼性(鹽基度) The basicity of amines (A)胺鹽的生成 Formation of Amine Salts 胺是鹽基性有機化合物,故能把濕潤的石蕊試紙轉變為藍色。它的鹽基特性是由於其氮原子上的孤偶電子能給予質子。 Amines are basic organic compounds,and they will turn wet litmuspaper...
申请(专利权)人: ROHM AND HAAS COMPANY 发明人: R Mukkamala 摘要: A composition useful for dispersing asphaltenes in crude oil comprising (a) 0.001% to 0.2% of at least one reaction product of (i) an amine and (ii) a carboxylic, phosphonic or sulfonic acid and (b) crude oil.收藏...
1 Workflow for enumeration of amine–acid transformations. For a pair of coupling partners, we consider a reaction at the functional group A (amine) and B (carboxylic acid oxygen, B[O] or carbon, B[C]). Deamination reactions are noted as −A and decarboxylation reactions are noted as ...
As the deprotonation enthalpy does not account for steric effects, no such correlation could be found between the activation energies of these reaction steps and the deprotonation enthalpies of the amine sites. 展开 关键词: Aldol reaction Amines Silanols Kinetic modelling Acid-base ...
chloride, one or more acid-absorbing reagents, and one or more water-immiscible solvents to continuously form a reaction mixture; b) continuously reacting the amine and acid chloride to form an incorporated photographic amide; and c) separating the incorporated photographic amide from the reaction ...
aThe ionic liquid used as reaction medium has a crucial effect on the reaction process.It provides a better solvation of the ionic reactants (when put in contact, the amine and acid spontaneously form a salt that has a low solubility in organic solvents and also is responsible for the very...
The carbonyl-amine reaction between pyruvic acid and α-amino alcohols was monitored by Fourier transform infrared spectroscopy at a temperature range between 20 and 100 °C and under acidic and basic conditions. To avoid interference, the reactions were conducted in the absence of solvent using liq...
Topic: Amine and Heterocyclic reaction (Read 12437 times) CH3CH2NH2 + CH3CO-O-COCH3 --> CH3CH2-NH-COCH3 + CH3COOH Question: explain why only one amine hydrogen which is get substituted by acetyl group eventhough acetate anhydride is used excessively in the reaction??
美[ə'mi:n] 英[ə'miːn] n.【化】胺 网络胺类;氨基;胺基 复数:amines 英汉 英英 网络释义 n. 1. 【化】胺 例句 释义: 全部,胺,胺类,氨基,胺基