多元酸

多元酸滴定pH的计算和滴定曲线绘制

Calculating and Plotting Titration Curve of Polybasic Acid

本文根据酸碱平衡理论和酸碱质子理论对多元酸（磷酸）的滴定体系进行处理，准确计算了其滴定过程中溶液的pH值，并绘制出其滴定曲线。

This paper manipulates the titration system of polybasic acid ( phosphoric acid ), based on acid-base equilibrium theory and acid-base proten theory . It accurately calculates the pH of the solution among the titration procedure and plots its titration curve .

渐进因子分析－pH－分光法测定多元酸的离解常数

The Determination of Ionization Constants of Polyprotic by Using Evolving Factor Analysis and pH-Spectrophotometric Data

MonteCarlo法适用于多元酸体系；

The Monte Carlo method to the system of polybasic acids ;

多元酸改性环氧丙烯酸UV树脂的合成

Synthesis of Polyacid Modified Epoxy Acrylic UV Resin

阐述了用马来海松酸（MPA）为多元酸替代苯酐制备醇酸树脂的新工艺。

A new technological process to produce alkyd resin by use of maleopimaric acid ( MPA ) as polyol instead of PA.

其中主体酸为多元酸的混合物，在地层条件下可进行一级、二级电离（pka＜6）。室内试验表明：RA缓速酸体系具有较强的溶蚀能力和缓速性能，其腐蚀性低；

The indoor testing shows that retarded acid RA has good retardation , lower corrosion to steel , and good corrasion ability .

采用部分多元酸代替丙烯酸对环氧丙烯酸UV树脂进行改性，在一定程度上改善了原树脂的脆性，改性后的树脂具有固化速度快、光泽高、黏度高的特点。

Modified epoxy acrylic UV resin with polyacid partially replacing acrylic acid , overcoming the brittleness of original resin in some degree and gives resin with fast curing speed , high gloss , high adhesion .

本文以Gordon模型为基础，借助于最优化方法，建立了解析混合多元酸的离解常数和含量的计算分析方法。

A calculating analytical method based on Gordon model and with the aid of optimization for determining dissociation constants as well as contents of mixed polybasic acids is presented .

线性滴定法测定混合酸（HAⅠ+HAⅡ）或多元酸的等当点时，必须正确地选择滴定点，这是提高线性滴定法准确度的重要措施之一。

The titration points must be selected exactly as the equivalence points of mixed acid ( HA ⅰ + HA ⅱ) or polyprotonic acid are determined by linear titrimetry , which is one of the important steps to raise the accuracy of linear titrimetry .

多元酸酯系-PVC膜碳传感器的研制及电位滴定中的应用

Polybasic Ester-Carbon PVC Membrane Sensor and Its Application in Potentiometric Titration

乙酰蓖麻酸甲氧基乙酯臭氧氧化蓖麻油制备甘油三酸酯多元酸的研究

Preparation of triglyceride polybasic carboxylic acid by ozonolysis of castor oil

混合多元酸的计算分析法

Application of calculating analytical method to mixed reaction solution of weak acids

用蒙特卡洛法计算多元酸的稳定常数

Monte Carlo Method on the Calculation of Stability Constants of Polybasic Acid

强酸与多元酸混合物中各组分酸含量测定方法研究

Determination of Each Acid Content in Mixture of Strong and Polybasic Acids

电位滴定&计算机最优化法测定混合多元酸组份浓度与电离常数

Determination of Mixed Polybasic Acid by Potentiometric Titration-Computer Optimization Method

聚酯树脂是多元酸和多元羟基化合缩聚而成。

Polyester resins are the condensation products of polybasic acids and polyols .

智能求解未知多元酸各级离解常数的研究

A Study of Intelligent Evaluation for Dissociation Constants of Unknown Polybasic Acid

电位滴定法测定多元酸离解常数

Determine Dissociation Constant of Polyprotic Acid by Potentiometric Titration

多元酸和腺核苷酸对电子传递及光合磷酸化的共同作用

Cooperative effect of polybasic acid and adenine nucleotide on electron transport and photophosphorylation

线性作图法测定多元酸的二元混合体系的等当点

Linear graphic determination for equivalence points of two polyprotic acids in a mixture

国内外卷烟多元酸和高级脂肪酸的分析研究

Analysis Study on Polybasic and Higher Fatty Acids in Domestic and Foreign Cigarettes

高分子多元酸在涂料中的应用

The application of high-polymeric polyols in surface coatings

讨论了合成时所需的催化剂、多元酸用量等因素对树脂性能的影响。

And the influence of needed catalyst and polyacid dosage on resin performances is discussed .

在强酸与多元酸混合酸中影响各组分酸含量测定的因素及条件

The Factors and Condition in Determination of Each Acid Content From Mixture of Strong and Polybasic Acids

云南及部分国外烤烟多元酸和高级脂肪酸聚类分析

Cluster analysis of polybasic acids and higher fatty acids in flue-cured tobacco leaves in Yunnan and overseas

聚合多元酸和改性聚醚通过自组装可形成超分子。

Supermolecules can be synthesized through self-assembly of polyacid ( A ) and modified polyether ( B ) .

烘丝前后烟丝多元酸和高级脂肪酸变化研究

Study on the Variety of Nonvolatile Organic Acids and High Fatty Acids of the Cut Tobacco in Drying Process

利用带有活性官能基团的大分子单体，采用酯化反应工艺，与多元酸、多元醇进行缩聚反应，合成的饱和聚酯树脂与丙烯酸树脂具有非常好的相容性。

Macromolecule monomer with active groups is polycondensated with polyacid and polyols through esterification reaction to give saturated polyester that is well compatible with acrylic resin .

在催化剂、链支化剂存在下多元酸和多元醇直接熔融酯化、常压缩聚合成饱和羟基聚酯。

Abstract A saturated hydroxy polyester resin has been prepared with polycarboxylic acid and polyol at the presence of catalyst and chain transfer agent by the direct melt esterification process .