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    • 1. 发明公开
    • PMA 정제방법
    • 丙二醇单乙醚的处理方法
    • KR1020140016716A
    • 2014-02-10
    • KR1020120083864
    • 2012-07-31
    • 덕산실업(주)엘티씨에이엠 주식회사
    • 이우용이승용김용욱
    • C07C67/62C07C67/54C07C69/708
    • The present invention relates to a method of recycling propyleneglycol monomethylether acetate (PMA) used in a photoresist process which comprises the following steps: a preparation step for preparing a waste organic solvent with PGEMA and impurities used in the photoresist process; a first reaction step for inserting a polymerization preventing agent into the waste organic solvent for reaction; a second reaction step for inserting an additive into the waste organic solvent for reaction; and a removal step for removing the impurities from the waste organic solvent by fractional distillation. The method enables users to purify the waste organic solvent and obtain high purity PMA.
    • 本发明涉及在光致抗蚀剂工艺中使用的丙二醇单甲醚乙酸酯(PMA)的再循环方法,其包括以下步骤:用PGEMA制备废有机溶剂和在光致抗蚀剂工艺中使用的杂质的制备步骤; 将聚合防止剂插入废有机溶剂进行反应的第一反应步骤; 将添加剂插入废有机溶剂进行反应的第二反应步骤; 以及通过分馏从废有机溶剂中除去杂质的去除步骤。 该方法使用户能够净化废有机溶剂并获得高纯度PMA。
    • 6. 发明授权
    • 유기용제의 정제 방법
    • 有机溶剂精制方法
    • KR101232334B1
    • 2013-02-13
    • KR1020120063303
    • 2012-06-13
    • 덕산실업(주)엘티씨에이엠 주식회사
    • 이우용이승용김용욱
    • C07C249/14C07C251/44B01D3/14
    • PURPOSE: A refining method of an organic solvent is provided to purify and separate propylene glycol monomethyl ether acetate from a waste organic solvent and to improve production yield and treatment amount. CONSTITUTION: A refining method of an organic solvent comprises: a step of preparing a waste organic solvent which comprises a first organic compound and a second organic compound and is used in a photoresist process; a step of putting an amine compound into the waste organic solvent and forming a second organic compound into a third organic compound which has a different boiling point than the first organic compound; and a step of obtaining a first organic compound by fractional distilling of the waste organic solvent. The amine compound is hydroxylamine, hydroxylamine sulfate, or hydroxylamine hydrochloride.
    • 目的:提供有机溶剂的精制方法,从废有机溶剂中纯化和分离丙二醇单甲醚乙酸酯,提高产量和处理量。 构成:有机溶剂的精制方法包括:制备包含第一有机化合物和第二有机化合物的废有机溶剂并用于光致抗蚀剂工艺的步骤; 将胺化合物置于废有机溶剂中并将第二有机化合物形成第三有机化合物的步骤,其具有与第一有机化合物不同的沸点; 以及通过分级蒸馏废有机溶剂获得第一有机化合物的步骤。 胺化合物是羟胺,硫酸羟胺或盐酸羟胺。