JPS5784740A - Preparation of microcapsule - Google Patents

Preparation of microcapsule

Info

Publication number
JPS5784740A
JPS5784740A JP55160756A JP16075680A JPS5784740A JP S5784740 A JPS5784740 A JP S5784740A JP 55160756 A JP55160756 A JP 55160756A JP 16075680 A JP16075680 A JP 16075680A JP S5784740 A JPS5784740 A JP S5784740A
Authority
JP
Japan
Prior art keywords
liquid
oil
particle size
type emulsion
water type
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
JP55160756A
Other languages
Japanese (ja)
Inventor
Tatsuhiko Sakamoto
Tsutomu Murano
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.)
Jujo Paper Co Ltd
Original Assignee
Jujo Paper 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 Jujo Paper Co Ltd filed Critical Jujo Paper Co Ltd
Priority to JP55160756A priority Critical patent/JPS5784740A/en
Publication of JPS5784740A publication Critical patent/JPS5784740A/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
    • B01J13/04—Making microcapsules or microballoons by physical processes, e.g. drying, spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing Of Micro-Capsules (AREA)

Abstract

PURPOSE:To obtain a microcapsule with a uniform particle size from an oil in water type emulsion by passing a mixed liquid of an oily liquid and a solution of a water soluble monomer or the like through a tubular mixer having a shearing means provided thereto to form the oil in water type emulsion. CONSTITUTION:A mixed liquid 11 of an oily liquid to be enclosed in a capsule and a solution of a water soluble monomer or polymer is entered into a holding tank 6. Only a valve 13c is closed and a constant-volume pump 7 is operated. The mixed liquid 11 is passed through a tubular mixer 8 having a barrier plate 10 suitable for shearing the liquid provided in an inside thereof and returned to the holding tank 6 from a pipe 12c. An average flow speed of the liquid in the tubular mixer 8 is adjusted 10-25m/sec and an average recirculation number to 1-50 times and, thereby, an oil in water type emulsion having an appropriate particle size and narrow particle size distribution is obtained. The resulting emulsion is transferred to a wall film forming treatment tank 9 through a valve 13c and a wall film is formed therein to obtain a microcapsule dispersion.
JP55160756A 1980-11-17 1980-11-17 Preparation of microcapsule Pending JPS5784740A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55160756A JPS5784740A (en) 1980-11-17 1980-11-17 Preparation of microcapsule

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55160756A JPS5784740A (en) 1980-11-17 1980-11-17 Preparation of microcapsule

Publications (1)

Publication Number Publication Date
JPS5784740A true JPS5784740A (en) 1982-05-27

Family

ID=15721779

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55160756A Pending JPS5784740A (en) 1980-11-17 1980-11-17 Preparation of microcapsule

Country Status (1)

Country Link
JP (1) JPS5784740A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4454083A (en) * 1981-12-21 1984-06-12 Appleton Papers Inc. Continuous microencapsulation
JPH03501940A (en) * 1987-09-28 1991-05-09 レッデング・ジュニア，ブルース・ケイ Apparatus and method for microcapsule preparation
US5558820A (en) * 1991-02-13 1996-09-24 Fuji Photo Film Co., Ltd. Process for preparing microcapsules
CN103769017A (en) * 2012-10-23 2014-05-07 中国科学院理化技术研究所 Microencapsulation method for water-soluble inorganic salt

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49121787A (en) * 1973-03-09 1974-11-21
JPS60191095A (en) * 1984-03-07 1985-09-28 Toshiba Corp Method and device for manufacturing silicon single crystal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49121787A (en) * 1973-03-09 1974-11-21
JPS60191095A (en) * 1984-03-07 1985-09-28 Toshiba Corp Method and device for manufacturing silicon single crystal

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4454083A (en) * 1981-12-21 1984-06-12 Appleton Papers Inc. Continuous microencapsulation
JPH03501940A (en) * 1987-09-28 1991-05-09 レッデング・ジュニア，ブルース・ケイ Apparatus and method for microcapsule preparation
US5558820A (en) * 1991-02-13 1996-09-24 Fuji Photo Film Co., Ltd. Process for preparing microcapsules
CN103769017A (en) * 2012-10-23 2014-05-07 中国科学院理化技术研究所 Microencapsulation method for water-soluble inorganic salt

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