JPS5541813A - Defoaming agent - Google Patents
Defoaming agentInfo
- Publication number
- JPS5541813A JPS5541813A JP11385378A JP11385378A JPS5541813A JP S5541813 A JPS5541813 A JP S5541813A JP 11385378 A JP11385378 A JP 11385378A JP 11385378 A JP11385378 A JP 11385378A JP S5541813 A JPS5541813 A JP S5541813A
- Authority
- JP
- Japan
- Prior art keywords
- aqueous solution
- formaldehyde
- foaming
- primary amine
- aromatic primary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Degasification And Air Bubble Elimination (AREA)
Abstract
PURPOSE: To remove trouble due to foaming by carrying out defoaming in a simple operation comprising adding an aqueous solution of a salt of aromatic primary amine-formaldehyde polycondensation product to a foamable aqueous solution to break bubbles.
CONSTITUTION: An aqueous solution of hydrochloride or acetate of aromatic primary amine such as aniline, toluidine is reacted with formaldehyde by polycondensation in a molar ratio of 1:0.75W1.30 of the amine to formaldehyde to yield an aqueous solution of hydrochoride or acetate of polycondensation product. An aqueous solution of a salt of aromatic primary amine-formaldehyde polymerization product at a concentration of 0.01W20% by weight is sprinkled over a foamable aqueous solution to break bubbles or is added to the foamable aqueous solution to control foaming. Defoaming can be effected in a small amount of the agent, and the trouble due to foaming can be eliminated.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11385378A JPS5541813A (en) | 1978-09-16 | 1978-09-16 | Defoaming agent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11385378A JPS5541813A (en) | 1978-09-16 | 1978-09-16 | Defoaming agent |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5541813A true JPS5541813A (en) | 1980-03-24 |
JPS5635922B2 JPS5635922B2 (en) | 1981-08-20 |
Family
ID=14622703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11385378A Granted JPS5541813A (en) | 1978-09-16 | 1978-09-16 | Defoaming agent |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5541813A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4786338A (en) * | 1985-10-31 | 1988-11-22 | Norio Anzawa | Method for cooling rolled steels |
-
1978
- 1978-09-16 JP JP11385378A patent/JPS5541813A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4786338A (en) * | 1985-10-31 | 1988-11-22 | Norio Anzawa | Method for cooling rolled steels |
Also Published As
Publication number | Publication date |
---|---|
JPS5635922B2 (en) | 1981-08-20 |
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