JPS5515660A - Improved micro capsule - Google Patents
Improved micro capsuleInfo
- Publication number
- JPS5515660A JPS5515660A JP8915978A JP8915978A JPS5515660A JP S5515660 A JPS5515660 A JP S5515660A JP 8915978 A JP8915978 A JP 8915978A JP 8915978 A JP8915978 A JP 8915978A JP S5515660 A JPS5515660 A JP S5515660A
- Authority
- JP
- Japan
- Prior art keywords
- maleic anhydride
- aqueous solution
- acidic aqueous
- copolymer
- precondensate
- 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
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
- B01J13/06—Making microcapsules or microballoons by phase separation
- B01J13/14—Polymerisation; cross-linking
- B01J13/18—In situ polymerisation with all reactants being present in the same phase
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Laminated Bodies (AREA)
- Manufacturing Of Micro-Capsules (AREA)
- Color Printing (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
PURPOSE:The stable micro obtainable at high concentrations by dispersing and emulsifying hydrophobic material into the acidic aqueous solution of styrene copolymer and ethylene copolymer of maleic anhydride, adding the precondensate of melamine-formalin, causing the mixture to react through heating thereby forming wall films. CONSTITUTION:Styrene-maleic anhydride copolymer and ethylene-maleic anhydride coplymer are dissolved in an acidic aqueous solution at ratios of 1:0.5 to 1:2 based on weight. Hydrophobic material is dispersed and emulsified in this acidic aqueous solution and the precondensate of malamine-formalin is added into this. The solution is caused to react under acidic condition and heating, whereby wall films are formed. In this method, good capsules may be obtained in the range of about 40 to 95 deg.C and pH 5.0 to 6.0. The capsules have dense films and are superior in water resistance and microbe resistance.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8915978A JPS5515660A (en) | 1978-07-21 | 1978-07-21 | Improved micro capsule |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8915978A JPS5515660A (en) | 1978-07-21 | 1978-07-21 | Improved micro capsule |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5515660A true JPS5515660A (en) | 1980-02-02 |
JPS621776B2 JPS621776B2 (en) | 1987-01-16 |
Family
ID=13963045
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8915978A Granted JPS5515660A (en) | 1978-07-21 | 1978-07-21 | Improved micro capsule |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5515660A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2543019A1 (en) * | 1983-03-25 | 1984-09-28 | Mitsubishi Paper Mills Ltd | PROCESS FOR THE PRODUCTION OF MICROCAPSULES |
JPS63272580A (en) * | 1987-04-30 | 1988-11-10 | Kanzaki Paper Mfg Co Ltd | Manufacture of micro capsule printed matter |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6430271U (en) * | 1987-08-18 | 1989-02-23 |
-
1978
- 1978-07-21 JP JP8915978A patent/JPS5515660A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2543019A1 (en) * | 1983-03-25 | 1984-09-28 | Mitsubishi Paper Mills Ltd | PROCESS FOR THE PRODUCTION OF MICROCAPSULES |
JPS63272580A (en) * | 1987-04-30 | 1988-11-10 | Kanzaki Paper Mfg Co Ltd | Manufacture of micro capsule printed matter |
JPH059272B2 (en) * | 1987-04-30 | 1993-02-04 | Kanzaki Paper Mfg Co Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS621776B2 (en) | 1987-01-16 |
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