JPS5771634A - Preparation of microcapsule dispersion liquid - Google Patents

Preparation of microcapsule dispersion liquid

Info

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
Application number
JP14607780A
Other languages
Japanese (ja)
Inventor
Hiroshi Iwasaki
Haruo Omura
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 JP14607780A priority Critical patent/JPS5771634A/en
Publication of JPS5771634A publication Critical patent/JPS5771634A/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

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.
JP14607780A 1980-10-17 1980-10-17 Preparation of microcapsule dispersion liquid Pending JPS5771634A (en)

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)

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