Invention Publication
- Patent Title: PROCESS OF MANUFACTURING 2-(4'-DIETHYLAMINO-2'-HYDROXYBENZOYL)BENZOIC ACID HEXYL ESTER
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Application No.: US18265999Application Date: 2021-12-16
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Publication No.: US20240109838A1Publication Date: 2024-04-04
- Inventor: Karin SCHEIN-ALBRECHT , Thomas EHLIS , Mathieu BLANCHOT , Dennis KAUFHOLD , Helmut KRONEMAYER , Sebastian WLOCH
- Applicant: BASF SE
- Applicant Address: DE Ludwigshafen am Rhein
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen am Rhein
- Priority: EP 215315.1 2020.12.18
- International Application: PCT/EP2021/086334 2021.12.16
- Date entered country: 2023-06-08
- Main IPC: C07C227/18
- IPC: C07C227/18 ; C07C227/10 ; C07C227/40 ; C07C227/42 ; C07C229/52
Abstract:
The present invention relates to a process of manufacturing 2-(4′-diethylamino-2′-hydroxybenzoyl)benzoic acid hexyl ester having a Gardner value of 8.2 or less comprising adjusting the reaction mixture obtained by reacting 2-(4′-diethylamino-2′-hydroxybenzoyl)benzoic acid with n-hexanol to a pH of more than 7 followed by extracting at least once with an aqueous phase and adsorbing the dissolved 2-(4′-diethylamino-2′-hydroxybenzoyl)benzoic acid hexyl ester over at least two different adsorbents.
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