This article is a study of methylene chloride as a substitute for trichloro-fluoromethane in producing flexible polyurethane foam.
论了用二
甲烷替代一氟三
甲烷进行软质聚氨
泡沫塑料的生产。
This article is a study of methylene chloride as a substitute for trichloro-fluoromethane in producing flexible polyurethane foam.
论了用二
甲烷替代一氟三
甲烷进行软质聚氨
泡沫塑料的生产。
Most other processes use chemical solvents, like Methylene Chloride or Ethyl Acetate to decaffeinate coffee beans.
而通常这个过程,有些工艺会使用二甲烷(用
萃取剂)或乙酸乙
(用
溶剂)等。
Reaction of ferrocenylphenylcarbinol with ethereal solution of boron trifluoride in dichloride methane formed the relevant ferrocenylphenylmethyl carbocation.
二茂铁基苯基甲醇与三氟化硼-乙醚溶液在二甲烷中
用,形成二茂铁苯基甲基碳正离子。
The hydroxyl value of epoxy-containing polyester was determined by analyzing acetification principle and using acetyl chloride as acetifier and methylene chloride as solvent.
通过对其化原理分析,选用乙
化剂、二
甲烷
化溶剂,测定含环氧基聚
的羟值。
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