Preparation of glycolic acid ester
专利汇可以提供Preparation of glycolic acid ester专利检索，专利查询，专利分析的服务。并且PURPOSE: To prepare the titled substance useful as a raw material of chemicals, at a low cost, in high yield, by reacting carbon monoxide with form-aldehyde in the presence of a specific catalyst such as dimethyl sulfate, etc., and then reacting the reaction product without separating from the system with an alcohol.
CONSTITUTION: Carbon monoxide is made to react with formaldehyde or a formaldehyde polymer giving formaldehyde by depolymerization, at preferably 90W 190°C and ≥5kg/cm
2 pressure, in the presence of a catalyst selected from the group of dimethyl sulfate, dimethyl sulfate-hydrogen fluoride, dimethyl sulfate- hydrogen chloride, magic methyl, etc. The obtained copolymer of carbon monoxide and formaldehyde is made to react with an alcohol to obtain the titled compound. The molar ratio of carbon monoxide to formaldehyde is preferably ≥1, and the amount of alcohol is preferably 1W20mol per 1mol of CO.
COPYRIGHT: (C)1983,JPO&Japio，下面是Preparation of glycolic acid ester专利的具体信息内容。
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