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1.发明授权Process for obtaining glycols and glycerine or di- and triesters thereof from polyglycols and polyglycerine 失效从聚二醇和聚甘油获得二醇和甘油或其二酯和三酯的方法
公开(公告)号：US4087453A
公开(公告)日：1978-05-02
申请号：US697799
申请日：1976-06-18
CPC分类号： C07C29/095
摘要： A process for recovering monomeric glycols and glycerine from polyoxyalkylene glycols and polyglycerines which comprises heating the polymeric compounds together with a lower saturated mono-carboxylic acid, containing from 2 to 4 carbon atoms such as acetic acid, in the presence of a strong acid, e.g. sulfuric acid, or a strong acid cation exchange resin. The product, which is the diester of the monomeric glycol or the triester of glycerine, is recovered and subsequently hydrolyzed to obtain the desired monoglycol or glycerine product. If it is desired to obtain the ester itself, the latter step of hydrolyzing can be omitted.
摘要翻译： 从聚氧亚烷基二醇和聚甘油中回收单体二醇和甘油的方法，其包括在强酸（例如乙酸）存在下，将聚合化合物与含有2至4个碳原子的较低饱和一元酸例如乙酸一起加热。 硫酸或强酸阳离子交换树脂。 将单体二醇或甘油三酯的二酯的产物回收，随后水解，得到所需的单甘醇或甘油产物。 如果希望获得酯本身，则后一步的水解可以被省略。
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2.发明授权Method for preparing pentachloroacetone and dichloroacetic acid from isopropyl ethers 失效从异丙醚制备五氯丙酮和二氯乙酸的方法
公开(公告)号：US3996272A
公开(公告)日：1976-12-07
申请号：US511842
申请日：1974-10-03
IPC分类号： C07C45/51 , C07C51/00 , C07C51/295 , C07C53/16 , C07C49/08
CPC分类号： C07C51/00 , C07C45/513 , C07C51/295
摘要： This invention relates to a chemical process for preparing pentachloro-2-propanone (pentachloroacetone) and dichloroacetic acid from isopropyl ethers which may be partially chlorinated. The pentachloroacetone process is carried out by reacting the isopropyl ethers with chlorine in the presence of water to produce pentachloroacetone which can then be recovered. Alternatively, if dichloroacetic acid is desired, the pentachloroacetone process may be carried further by reacting the pentachloroacetone with a base-acting material to produce a salt of dichloroacetic acid and then reacting this salt with acid to produce dichloroacetic acid of about 95% purity.
摘要翻译： 本发明涉及可以部分氯化的异丙醚制备五氯-2-丙酮（五氯丙酮）和二氯乙酸的化学方法。 五氯丙酮方法是通过在水存在下使异丙醚与氯反应，生成五氯丙酮，然后将其回收。 或者，如果需要二氯乙酸，则五氯丙酮方法可以进一步通过使五氯丙酮与碱作用物质反应以制备二氯乙酸的盐，然后使该盐与酸反应，产生约95％纯度的二氯乙酸。
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