JPS5689834A - Production of microcapsule - Google Patents

Production of microcapsule

Info

Publication number
JPS5689834A
JPS5689834A JP16794379A JP16794379A JPS5689834A JP S5689834 A JPS5689834 A JP S5689834A JP 16794379 A JP16794379 A JP 16794379A JP 16794379 A JP16794379 A JP 16794379A JP S5689834 A JPS5689834 A JP S5689834A
Authority
JP
Japan
Prior art keywords
core material
soln
dispersion
water
aqueous
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
Application number
JP16794379A
Other languages
Japanese (ja)
Other versions
JPS5927610B2 (en
Inventor
Norinaga Fujishige
Takashi Shimizu
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP16794379A priority Critical patent/JPS5927610B2/en
Publication of JPS5689834A publication Critical patent/JPS5689834A/en
Publication of JPS5927610B2 publication Critical patent/JPS5927610B2/en
Expired 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
    • B01J13/08—Simple coacervation, i.e. addition of highly hydrophilic material

Abstract

PURPOSE:To produce the microcapsules of a core material efficiently in a short time by dispersing an aqueous soln. or aqueous dispersion of said core material into an ethyl acetate soln. of a high polymer material and redispersing this dispersion into a large amount of water. CONSTITUTION:An aqueous soln. or aqueous dispersion of a core material is added into an ethyl acetate soln. of a high polymer material which serves as the coating material for microcapsules, and these are dispersed into fine particles of suitable sizes with the aid of a homogenizer or the like. This dispersion is redispresed into a large amount of water in order to prevent the particles contg. the dispersed core material from flocculating each other and solidifying as well as to accelerate the desolvation from the coating structure of the particle surfaces. Good results will be obtained as well by beforehand dissolving a small amount of a nonionic surfactant in the water to be redispersed with the particles.
JP16794379A 1979-12-24 1979-12-24 Method for manufacturing microcapsules Expired JPS5927610B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16794379A JPS5927610B2 (en) 1979-12-24 1979-12-24 Method for manufacturing microcapsules

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16794379A JPS5927610B2 (en) 1979-12-24 1979-12-24 Method for manufacturing microcapsules

Publications (2)

Publication Number Publication Date
JPS5689834A true JPS5689834A (en) 1981-07-21
JPS5927610B2 JPS5927610B2 (en) 1984-07-06

Family

ID=15858918

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16794379A Expired JPS5927610B2 (en) 1979-12-24 1979-12-24 Method for manufacturing microcapsules

Country Status (1)

Country Link
JP (1) JPS5927610B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4822535A (en) * 1985-07-12 1989-04-18 Norsk Hydro A.S. Method for producing small, spherical polymer particles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4822535A (en) * 1985-07-12 1989-04-18 Norsk Hydro A.S. Method for producing small, spherical polymer particles

Also Published As

Publication number Publication date
JPS5927610B2 (en) 1984-07-06

Similar Documents

Publication Publication Date Title
DE69117649T2 (en) Process for the production of fine spherical, uniformly large inorganic particles
DE60108518D1 (en) PARTICLE
CA2340751A1 (en) Compositions for forming transparent conductive nanoparticle coatings and process of preparation therefor
WO1989011154A1 (en) Encapsulated superparamagnetic particles
SE457326B (en) PROCEDURES FOR PREPARING A QUICK SUBSTANTIAL CANDLES CONTAINING BLA MICROCRISTALLIN CELLULOSA
IL65542A0 (en) In-flight encapsulation of particles
GB9414318D0 (en) Preparation of aqueous emulsions
JPS5536458A (en) Stable aqueous suspension pesticide composition
DE59610369D1 (en) Process for the preparation of polymer powders redispersible in aqueous medium
JPS53137096A (en) Production of slightly soluble silver salt particles
ES422710A1 (en) Pesticidal compositions
JPS5689834A (en) Production of microcapsule
JPS5266633A (en) Stable dispersion of agricultural chemicals
JPS5322171A (en) Production of pigment-attached fluorescent substance
JPS5318634A (en) Aqueous pigment dispersions
JPS5451844A (en) Toner for electrostatic image development and production of the same
CA2079558A1 (en) Water-dispersible complex and a process for the production thereof
JPS51138735A (en) Preparation of aqueous p olyolefin suspension
DE3473401D1 (en) Process for producing dispersions of pesticides containing swelling agents
JPS6418901A (en) Gel for oxide superconductor and production thereof
JPS5659630A (en) Manufacture of high coercive force magnetic powder
JPS5245589A (en) Method of producing microcapsules by emulsification, dispersion, and s olvent removal
JPS5645906A (en) Production of dispersion of organic azonitrile fine particle
JPS572202A (en) Composite agricultural chemical composition
JPS5233899A (en) Process for production of silica sol