JPS5599337A - Production of microcapsule dispersion - Google Patents

Production of microcapsule dispersion

Info

Publication number
JPS5599337A
JPS5599337A JP732879A JP732879A JPS5599337A JP S5599337 A JPS5599337 A JP S5599337A JP 732879 A JP732879 A JP 732879A JP 732879 A JP732879 A JP 732879A JP S5599337 A JPS5599337 A JP S5599337A
Authority
JP
Japan
Prior art keywords
aldehyde
dispersion
microcapsule dispersion
inert gas
performance
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
Application number
JP732879A
Other languages
Japanese (ja)
Inventor
Hiroshi Iwasaki
Shinsuke Irii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kanzaki Paper Manufacturing Co Ltd
Original Assignee
Kanzaki Paper Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kanzaki Paper Manufacturing Co Ltd filed Critical Kanzaki Paper Manufacturing Co Ltd
Priority to JP732879A priority Critical patent/JPS5599337A/en
Priority to EP79301975A priority patent/EP0009413B1/en
Priority to US06/078,081 priority patent/US4305838A/en
Priority to DE7979301975T priority patent/DE2963891D1/en
Publication of JPS5599337A publication Critical patent/JPS5599337A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE:To obtain the captioned dispersion effectively removed of aldehyde without imparing performance by introducing inert gas into the microcapsule dispersion having aldehyde polycondensation resin film or aldehyde crosslinked wall films. CONSTITUTION:The microcapsule dispersion having polycondensation resin films or crosslinked wall films such as of formaldehyde is heated to 50 deg.C or more (60- 90 deg.C are best), to which inert gas such as Ar or N2 is introduced. As a result of this, residual aldehyde may be removed with good efficiency and processing time reduced. In addition, the processing of the conventional capsule dispersion which could not withstand water vapor distillation is made possible by the low temperature treatment without impairing the performance of the capsules, thus the microcapsule dispersion which is used for various fields such as pressure-sensitive copying paper and does not contain any residual aldehyde which is considered problem in sanitation control may be obtained.
JP732879A 1978-09-27 1979-01-23 Production of microcapsule dispersion Pending JPS5599337A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP732879A JPS5599337A (en) 1979-01-23 1979-01-23 Production of microcapsule dispersion
EP79301975A EP0009413B1 (en) 1978-09-27 1979-09-24 Process for removing aldehyde from dispersions of microcapsules
US06/078,081 US4305838A (en) 1978-09-27 1979-09-24 Process for removing aldehyde from dispersions of microcapsules
DE7979301975T DE2963891D1 (en) 1978-09-27 1979-09-24 Process for removing aldehyde from dispersions of microcapsules

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP732879A JPS5599337A (en) 1979-01-23 1979-01-23 Production of microcapsule dispersion

Publications (1)

Publication Number Publication Date
JPS5599337A true JPS5599337A (en) 1980-07-29

Family

ID=11662884

Family Applications (1)

Application Number Title Priority Date Filing Date
JP732879A Pending JPS5599337A (en) 1978-09-27 1979-01-23 Production of microcapsule dispersion

Country Status (1)

Country Link
JP (1) JPS5599337A (en)

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