JPS5771634A - Preparation of microcapsule dispersion liquid - Google Patents
Preparation of microcapsule dispersion liquidInfo
- Publication number
- JPS5771634A JPS5771634A JP14607780A JP14607780A JPS5771634A JP S5771634 A JPS5771634 A JP S5771634A JP 14607780 A JP14607780 A JP 14607780A JP 14607780 A JP14607780 A JP 14607780A JP S5771634 A JPS5771634 A JP S5771634A
- Authority
- JP
- Japan
- Prior art keywords
- dispersion liquid
- aldehyde
- capsule
- wall film
- microcapsule dispersion
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
- B01J13/20—After-treatment of capsule walls, e.g. hardening
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing Of Micro-Capsules (AREA)
Abstract
PURPOSE:To efficiently remove residual formaldehyde without losing capsule properties by adjusting a capsule dispersion liquid having an aldehyde polycondensation resin wall film to an alkaline side in the presence of an aliphatic aldehyde. CONSTITUTION:To a microcapsule dispersion liquid having an aldehyde polycondensation resin wall film formed by using an acid catalyst, an aliphatic aldehyde such as acetaldehyde or the like is added and a pH of the resultant dispersion liquid to about 9 or more, pref., about 10-12 by using caustic soda or the like and, subsequently, the pH adjusted liquid is warmed. By this method, removal effect of residual aldehyde is enhanced without losing properties of the capsule wall film.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14607780A JPS5771634A (en) | 1980-10-17 | 1980-10-17 | Preparation of microcapsule dispersion liquid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14607780A JPS5771634A (en) | 1980-10-17 | 1980-10-17 | Preparation of microcapsule dispersion liquid |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5771634A true JPS5771634A (en) | 1982-05-04 |
Family
ID=15399581
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14607780A Pending JPS5771634A (en) | 1980-10-17 | 1980-10-17 | Preparation of microcapsule dispersion liquid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5771634A (en) |
-
1980
- 1980-10-17 JP JP14607780A patent/JPS5771634A/en active Pending
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