标准摘要
[中文适用范围]： ISO 4629 的这一部分规定了测定树脂、涂料粘合剂、伯醇、二醇和脂肪羟基值的滴定方法。 该方法适用于羟基酸、酚羟基、某些多元醇，例如羟基酸、酚羟基、某些多元醇。 B. 三羟甲基丙烷，以及具有可进行弗里德尔-克来福特酰化反应的芳香族基团的物质，必须根据具体情况进行检查。 如果调整条件，该方法也适用于蓖麻油及其衍生物羟值的测定。 [外文原描述]： ISO 4629-2:2016 specifies a titrimetric method for determining the hydroxyl value of resins, binders for paints and varnishes, primary alcohols, glycols and fats. Whether it can be applied for hydro carboxylic acids, phenolic hydroxyl groups, polyols such as trimethyl propane and substances containing aromatic groups have been activated for Friedel-Crafts acylation shall be decided on case-to-case basis. Under the right conditions, the method is also applicable for determining the hydroxyl value of castor oil and its derivatives.
英文名称Binders for paints and varnishes — Determination of hydroxyl value — Part 2: Titrimetric method using a catalyst