选用合适的复合酰化体系，通过电位滴定，测定了工业碱木质素及其改性树脂的羟值。
Hydroxyl values of straw alkali lignin and modified lignin resin were determined by potentiometric titration in suitable composite acylation system.
介绍了一种含环氧基聚酯的羟值测定方法，即乙酰氯法。
A method for determining hydroxyl value of epoxy-containing polyester, namely acetyl chloride method is introduced.
介绍了一种含环氧基聚酯的羟值测定方法，即乙酰氯法。
A method for determining hydroxyl value of epoxy-containing polyester, namely acetyl chloride method is introduced.
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