Invention Grant
- Patent Title: Weakly coloured sulfonic acid
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Application No.: US16643076Application Date: 2018-08-30
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Publication No.: US11040940B2Publication Date: 2021-06-22
- Inventor: Jean-Alex Laffitte , Bernard Monguillon
- Applicant: ARKEMA FRANCE
- Applicant Address: FR Colombes
- Assignee: ARKEMA FRANCE
- Current Assignee: ARKEMA FRANCE
- Current Assignee Address: FR Colombes
- Agency: Smith, Gambrell & Russell, LLP
- Priority: FR1758098 20170901
- International Application: PCT/FR2018/052125 WO 20180830
- International Announcement: WO2019/043338 WO 20190307
- Main IPC: C07C309/04
- IPC: C07C309/04 ; C07C309/35 ; C07C309/30 ; C07C309/06 ; C07C309/29 ; C07C303/42 ; C23F11/04 ; C23F11/18
Abstract:
The subject of the present invention is a weakly corrosive and weakly coloured sulfonic acid, with an APHA colour index of less than 20, comprising chlorides and nitrites in a chloride/sulfonic acid molar ratio of between 1 ppm and 200 ppm, and a nitrite/sulfonic acid molar ratio of between 200 ppm and 6000 ppm, limits inclusive.
Public/Granted literature
- US20200181072A1 WEAKLY COLOURED SULFONIC ACID Public/Granted day:2020-06-11
Information query
