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公开(公告)号：US10167425B2
公开(公告)日：2019-01-01
申请号：US15584208
申请日：2017-05-02
Applicant: OCI COMPANY LTD.
Inventor： Hoseong Yoo , Seunghyun Han , Wook Chang , Yongil Kim
Abstract: The present disclosure relates to an etching solution capable of suppressing particle appearance including a first silane compound in which three or more hydrophilic functional groups are independently bonded to a silicon atom and a second silane compound in which one or two hydrophilic functional groups are independently bonded to a silicon atom.
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公开(公告)号：US09845241B2
公开(公告)日：2017-12-19
申请号：US14958854
申请日：2015-12-03
Applicant: OCI COMPANY LTD.
Inventor： Seung-Hyun Han , Wook Chang , Yeon-Hee Lee
IPC: C01B25/047
CPC classification number: C01B25/047
Abstract: The present invention relates to a method of purifying yellow phosphorus, and more particularly, to a method of effectively removing impurities from yellow phosphorus used as raw materials of a phosphoric acid to increase purity of the phosphoric acid, the method including: removing impurities from the phosphoric acid by adding an oxidizing agent to the yellow phosphorus, followed by stirring; and adding a solution including an additive having a specific functional group in a chemical structure to the yellow phosphorus from which the impurities are removed, followed by stirring.
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公开(公告)号：US20170321121A1
公开(公告)日：2017-11-09
申请号：US15584208
申请日：2017-05-02
Applicant: OCI COMPANY LTD.
Inventor： Hoseong Yoo , Seunghyun Han , Wook Chang , Yongil Kim
CPC classification number: C09K13/08 , C01B7/19 , C08K5/54 , H01L21/0206 , H01L21/31111
Abstract: The present disclosure relates to an etching solution capable of suppressing particle appearance including a first silane compound in which three or more hydrophilic functional groups are independently bonded to a silicon atom and a second silane compound in which one or two hydrophilic functional groups are independently bonded to a silicon atom. n
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