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公开(公告)号：US20180134652A1
公开(公告)日：2018-05-17
申请号：US15719987
申请日：2017-09-29
申请人： OCI COMPANY LTD.
发明人： Seong Hwan LEE , Sang Hoon KIM , Kyung Yeol KIM , Yong Il KIM
CPC分类号： C07C67/56 , B01D15/00 , B01D37/025 , B01J20/12 , B01J20/14 , C07C67/08 , C07C67/54 , C07C67/60 , C07C69/82
摘要： Disclosed is a method for purifying an ester compound, including: adding a base to a resultant reaction mixture comprising a plasticizer of an ester compound synthesized by an esterification reaction of an acid and an alcohol so as to neutralize unreacted acids; applying steam to the resultant reaction mixture which has been neutralized; adding diatomite to the resultant reaction mixture which has been steamed, prior to filtration through a filter, and then subjecting the resultant reaction mixture to which the diatomite has been added to a primary filtration; and adding an activated white clay to the resultant reaction mixture, and then subjecting the resultant reaction mixture which has been primarily filtrated to a secondary filtration through a filter.
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公开(公告)号：US20180134651A1
公开(公告)日：2018-05-17
申请号：US15718587
申请日：2017-09-28
申请人： OCI COMPANY LTD.
发明人： Seong Hwan LEE , Sang Hoon KIM , Kyung Yeol KIM , Yong Il KIM
摘要： Disclosed is a method of purifying terephthalate-based ester compounds, including: adding a base to a resultant reaction mixture comprising terephthalate-based ester compounds synthesized by esterification of terephthalic acid and alcohol so as to neutralize unreacted acids; applying steam to the resultant reaction mixture which has been neutralized; adding a filter aid to the resultant reaction mixture which has been steamed prior to filtration through a filter; and filtering through a filter the resultant reaction mixture to which the filter aid has been added, wherein the filter aid comprises diatomite particles having an average particle size of 50 μm to 90 μm.
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