间苯二酚与甲醛的聚合产率

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间苯二酚与甲醛的聚合产率
英文回答:
The condensation reaction between resorcinol and formaldehyde is a well-known process for the production of phenolic resins. The reaction can be carried out under
acidic or basic conditions, and the resulting resin can be used in a wide variety of applications, including adhesives, coatings, and molding compounds.
The overall reaction scheme for the condensation of resorcinol and formaldehyde is as follows:
n Resorcinol + m Formaldehyde → Resorcinol-formaldehyde resin + H2O.
The reaction is typically carried out in the presence
of a catalyst, such as hydrochloric acid or sodium hydroxide. The ratio of resorcinol to formaldehyde in the reaction mixture can be varied to produce resins with
different properties.
The rate of the condensation reaction is affected by a number of factors, including the temperature, the pH, and the concentration of the reactants. The reaction is
typically carried out at temperatures between 50 and 100°C. The pH of the reaction mixture can also affect the rate of the reaction, with acidic conditions typically favoring the formation of linear polymers and basic conditions favoring the formation of branched polymers.
The condensation of resorcinol and formaldehyde is a versatile reaction that can be used to produce a wide
variety of phenolic resins. The properties of the resulting resin can be tailored by varying the reaction conditions
and the ratio of reactants.
中文回答:
间苯二酚与甲醛的聚合反应是制造酚醛树脂的一种著名工艺。

该反应可以在酸性或碱性条件下进行,得到的树脂可以用于多种用途,包括粘合剂、涂料和模塑化合物。

间苯二酚与甲醛缩合的总体反应方案如下:
n 间苯二酚 + m 甲醛→ 间苯二酚-甲醛树脂 + H2O.
该反应通常在催化剂(如盐酸或氢氧化钠)存在下进行。

反应混合物中间苯二酚与甲醛的比例可以改变,以生产具有不同性质的树脂。

缩合反应速率受多种因素影响,包括温度、pH值和反应物的浓度。

反应通常在50至100°C的温度下进行。

反应混合物的pH值也会影响反应速率,酸性条件通常有利于形成线性聚合物,而碱性条件有利于形成支链聚合物。

间苯二酚与甲醛的缩合反应是一种多用途反应,可用于生产多种酚醛树脂。

所得树脂的性能可以通过改变反应条件和反应物的比例来定制。

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