Invention Grant
- Patent Title: Methods of reducing color in alkanolamine compositions and compositions produced thereby
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Application No.: US17511119Application Date: 2021-10-26
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Publication No.: US11702382B2Publication Date: 2023-07-18
- Inventor: Feng Xu , Flaiyh Al-Anazi
- 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
- The original application number of the division: US16062385
- Main IPC: C07C213/10
- IPC: C07C213/10 ; C07C215/12 ; C01B35/04 ; C01D1/04
Abstract:
A method of reducing color in an alkanolamine, the method comprising: contacting the alkanolamine with an amount of an aqueous solution effective to provide 5 to 1000 parts per million by weight of an alkali metal borohydride, based on parts by weight of the alkanolamine; and 0.5 to 10,000 parts per million by weight of an alkali metal hydroxide, based on parts by weight of the alkanolamine; preferably wherein the color-reduced alkanolamine is not distilled after the contacting.
Information query
