Cleaning agent for supercritical fluid processing equipment and method for cleaning supercritical fluid processing equipment using the same
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- NICCA CHEM COMPANY
- Filing Date
- 2022-12-27
- Publication Date
- 2026-06-23
AI Technical Summary
【0012】 本発明によれば、超臨界流体処理装置の洗浄剤として優れた洗浄能力を発揮する新規な洗浄剤を提供することができる。また、本発明によれば、当該洗浄剤を用いた、超臨界流体処理装置の洗浄方法を提供することもできる。
Smart Images
Figure 0007879027000002 
Figure 0007879027000001
Abstract
Claims
1. A cleaning agent for supercritical fluid processing equipment, comprising an alkylene oxide adduct of a secondary or tertiary alcohol having 10 to 16 carbon atoms, with a weight-average molecular weight of 200 to 700.
2. The cleaning agent according to claim 1, wherein the melting point is -60°C or higher and 20°C or lower.
3. A method for cleaning a supercritical fluid apparatus using a supercritical fluid and a cleaning agent according to claim 1 or 2, The supercritical fluid processing apparatus includes a dyeing vat, The aforementioned cleaning method is A first step involves adding the cleaning agent to the dyeing vat and dissolving the cleaning agent in a supercritical fluid at a first temperature and pressure, A second step involves raising the temperature of the dyeing vat to a second temperature higher than the first temperature, maintaining that temperature for a predetermined time, and performing cleaning. A third step involves lowering the temperature of the dyeing vat to a third temperature lower than the second temperature, and dissolving the cleaning agent containing the dye in a supercritical fluid. A method for cleaning a supercritical fluid processing apparatus, including [the specified component].
4. The cleaning method according to claim 3, wherein the first temperature is 45°C or higher and 135°C or lower.
5. The cleaning method according to claim 3, wherein the second temperature is 50°C or higher and 150°C or lower.
6. The cleaning method according to claim 3, wherein the first pressure is 10 MPa or more and 28 MPa or less.