This article is a study of methylene chloride as a substitute for trichloro-fluoromethane in producing flexible polyurethane foam.
讨论了用二氯甲烷替代一氟三氯甲烷进行软质
泡沫塑料
生产。
This article is a study of methylene chloride as a substitute for trichloro-fluoromethane in producing flexible polyurethane foam.
讨论了用二氯甲烷替代一氟三氯甲烷进行软质泡沫塑料生产。
The hydroxyl value of epoxy-containing polyester was determined by analyzing acetification principle and using acetyl chloride as acetifier and methylene chloride as solvent.
通过
化原理分析,选用乙氯作化剂、二氯甲烷作化溶剂,测定含环氧基羟值。
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