Invention Grant
- Patent Title: Method of pretreating ion-exchange resin for removal of aldehyde impurities
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Application No.: US17914677Application Date: 2021-03-04
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Publication No.: US11708315B2Publication Date: 2023-07-25
- Inventor: Srikant Gopal , Adel Al-Dossari , Jintang Duan
- Applicant: SABIC Global Technologies B.V.
- Applicant Address: NL Bergen op Zoom
- Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
- Current Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
- Current Assignee Address: NL Bergen Op Zoom
- Agency: Norton Rose Fulbright US LLP
- International Application: PCT/IB2021/051837 2021.03.04
- International Announcement: WO2021/198806A 2021.10.07
- Date entered country: 2022-09-26
- Main IPC: C07C29/76
- IPC: C07C29/76 ; B01D15/20 ; B01J47/016 ; B01J39/05 ; B01D15/36 ; B01J39/20
Abstract:
Method for lowering aldehyde content in a mixture comprising (i) diethylene glycol (DEG) and/or triethylene glycol (TEG) and (ii) aldehyde are disclosed. An ion exchange resin is soaked in monoethylene glycol. The mixture comprising 5 to 200 ppm aldehyde is then flowed to make contact with the soaked ion exchange resin to produce a product comprising DEG and/or TEG and less than 15 ppm aldehyde.
Information query
