JPS5681131A - Production of microcapsule - Google Patents

Production of microcapsule

Info

Publication number
JPS5681131A
JPS5681131A JP15787979A JP15787979A JPS5681131A JP S5681131 A JPS5681131 A JP S5681131A JP 15787979 A JP15787979 A JP 15787979A JP 15787979 A JP15787979 A JP 15787979A JP S5681131 A JPS5681131 A JP S5681131A
Authority
JP
Japan
Prior art keywords
microcapsule
production
hcho
polycondensation
baffles
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
JP15787979A
Other languages
Japanese (ja)
Inventor
Tetsuo Shimazaki
Toshizo Iida
Hirokazu Tsukahara
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.)
Mitsubishi Paper Mills Ltd
Original Assignee
Mitsubishi Paper Mills 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 Mitsubishi Paper Mills Ltd filed Critical Mitsubishi Paper Mills Ltd
Priority to JP15787979A priority Critical patent/JPS5681131A/en
Publication of JPS5681131A publication Critical patent/JPS5681131A/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
    • B01J13/06—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)
  • Manufacturing Of Micro-Capsules (AREA)

Abstract

PURPOSE:To obtain the microcapsule of good quality by employing an agitation reactor with one or more baffles meeting specific conditions in production thereof based on a polycondensation between urea and/or melamine and HCHO. CONSTITUTION:As starting material, urea and/or melamine and HCHO react in the presence of an anion high molecular electrolyte (e.g. maleic anhydrate based copolymer) or a noion high molecular (e.g. PVA) and an organic anion (e.g. acetic acid) to form a wall film of a polycondensation on surfaces of fine hydrophobic substance particles whereby a microcapsule is produced. This hydrophobic substance uses a leuco pressure-sensitive dye or various electronically responsive acid substance dissolved in a nonvolatile solvent. During the production, it is necessary to use an agitation reactor comprising a reaction tank 1 with one or more baffles meeting conditions as shown by the formula and an agitator 2.
JP15787979A 1979-12-05 1979-12-05 Production of microcapsule Pending JPS5681131A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15787979A JPS5681131A (en) 1979-12-05 1979-12-05 Production of microcapsule

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15787979A JPS5681131A (en) 1979-12-05 1979-12-05 Production of microcapsule

Publications (1)

Publication Number Publication Date
JPS5681131A true JPS5681131A (en) 1981-07-02

Family

ID=15659400

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15787979A Pending JPS5681131A (en) 1979-12-05 1979-12-05 Production of microcapsule

Country Status (1)

Country Link
JP (1) JPS5681131A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985000535A1 (en) * 1983-07-28 1985-02-14 Mitsui Toatsu Chemicals, Incorporated Process for producing microcapsules
JPS6397223A (en) * 1986-10-14 1988-04-27 Toppan Moore Co Ltd Production of microcapsule

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51144383A (en) * 1975-05-23 1976-12-11 Champion Paper Co Ltd Method of forming microcapsule
JPS5394273A (en) * 1977-01-28 1978-08-18 Kanzaki Paper Mfg Co Ltd Method of manufacturing microcapsule
JPS54107881A (en) * 1978-02-14 1979-08-24 Fuji Photo Film Co Ltd Preparation of minute capsule

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51144383A (en) * 1975-05-23 1976-12-11 Champion Paper Co Ltd Method of forming microcapsule
JPS5394273A (en) * 1977-01-28 1978-08-18 Kanzaki Paper Mfg Co Ltd Method of manufacturing microcapsule
JPS54107881A (en) * 1978-02-14 1979-08-24 Fuji Photo Film Co Ltd Preparation of minute capsule

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985000535A1 (en) * 1983-07-28 1985-02-14 Mitsui Toatsu Chemicals, Incorporated Process for producing microcapsules
JPS6397223A (en) * 1986-10-14 1988-04-27 Toppan Moore Co Ltd Production of microcapsule

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