Invention Grant
- Patent Title: Method for thermal stabilization of highly concentrated formaldehyde solutions
- Patent Title (中): 高度浓缩的甲醛溶液的热稳定化方法
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Application No.: US10547857Application Date: 2004-03-04
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Publication No.: US07273955B2Publication Date: 2007-09-25
- Inventor: Eckard Stroefer , Thomas Grützner , Hans Hasse
- Applicant: Eckard Stroefer , Thomas Grützner , Hans Hasse
- Applicant Address: DE
- Assignee: BASF Aktiengesellschaft
- Current Assignee: BASF Aktiengesellschaft
- Current Assignee Address: DE
- Agency: Connolly Bove Lodge & Hutz
- Priority: DE10309286 20030504
- International Application: PCT/EP2004/002181 WO 20040304
- International Announcement: WO2004/078691 WO 20040916
- Main IPC: C07C47/00
- IPC: C07C47/00
Abstract:
Method of stabilizing high-concentration formaldehyde solutions having a CH2O content of >70% by weight against precipitation of solids, which comprises heating the high-concentration formaldehyde solution at a heating rate of at least 5° C./min to a temperature of from 80° C. to 200° C. immediately after it has been prepared and storing it at a temperature in this range.
Public/Granted literature
- US20060084827A1 Method for thermal stabilization of highly concentrated formaldehyde solutions Public/Granted day:2006-04-20
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