ES466986A1 - Method of making microcapsules - Google Patents

Method of making microcapsules

Info

Publication number
ES466986A1
ES466986A1 ES466986A ES466986A ES466986A1 ES 466986 A1 ES466986 A1 ES 466986A1 ES 466986 A ES466986 A ES 466986A ES 466986 A ES466986 A ES 466986A ES 466986 A1 ES466986 A1 ES 466986A1
Authority
ES
Spain
Prior art keywords
coacervate
suspension
oil droplets
materials
hydrophilic colloid
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.)
Expired
Application number
ES466986A
Other languages
Spanish (es)
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
Priority claimed from JP52009022A external-priority patent/JPS5833011B2/en
Priority claimed from JP9892477A external-priority patent/JPS5432178A/en
Priority claimed from JP14201177A external-priority patent/JPS5474282A/en
Application filed by Kanzaki Paper Manufacturing Co Ltd filed Critical Kanzaki Paper Manufacturing Co Ltd
Publication of ES466986A1 publication Critical patent/ES466986A1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
    • B41M5/165—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components characterised by the use of microcapsules; Special solvents for incorporating the ingredients
    • 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
    • B01J13/10—Complex coacervation, i.e. interaction of oppositely charged particles

Landscapes

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

Abstract

Method of preparing microcapsules containing oil, comprising the steps of (1) preparing an aqueous system comprising an aqueous solution of at least two types of hydrophilic colloid materials with opposite electrical charges and oil droplets dispersed in said solution, (2) ) causing coacervation in said aqueous system at a temperature higher than the gelling points of said colloidhydrophilic materials to form a coacervate suspension in which each of said oil droplets is surrounded by a coacervate and (3) cooling said coacervate suspension. At a temperature below the gel points of said hydrophilic colloid materials to form multi-core capsules, characterized in that the aggregation of particles of oil droplets each having a coacervate around it is controlled during the cooling step of said suspension. Coacervate, by means of a stirring circulation so that the formation of multi-core microcapsules having a mean diameter within the range of 3 to 20 microns is allowed. (Machine-translation by Google Translate, not legally binding)
ES466986A 1977-01-28 1978-01-28 Method of making microcapsules Expired ES466986A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP52009022A JPS5833011B2 (en) 1977-01-28 1977-01-28 Method for manufacturing microcapsules
JP9892477A JPS5432178A (en) 1977-08-17 1977-08-17 Manufacture of microcapsule
JP14201177A JPS5474282A (en) 1977-11-25 1977-11-25 Manufacture of microcapsule

Publications (1)

Publication Number Publication Date
ES466986A1 true ES466986A1 (en) 1978-10-16

Family

ID=27278294

Family Applications (1)

Application Number Title Priority Date Filing Date
ES466986A Expired ES466986A1 (en) 1977-01-28 1978-01-28 Method of making microcapsules

Country Status (5)

Country Link
AU (1) AU514205B2 (en)
DE (1) DE2803687C2 (en)
ES (1) ES466986A1 (en)
FR (1) FR2378561A1 (en)
GB (1) GB1567426A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3424115C2 (en) * 1984-06-29 1986-10-16 Papierfabrik August Koehler AG, 7602 Oberkirch Continuous coacervation process for the production of an aqueous dispersion of oil-containing microcapsules
FR2608456B1 (en) * 1986-12-18 1993-06-18 Mero Rousselot Satia MICROCAPSULES BASED ON GELATIN AND POLYSACCHARIDES AND PROCESS FOR OBTAINING THEM
CA2009047C (en) * 1989-02-27 1999-06-08 Daniel Wayne Michael Microcapsules containing hydrophobic liquid core
KR100541753B1 (en) * 1999-07-27 2006-01-10 가부시키가이샤 시세이도 Microcapsule and a process for its preparation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL125294C (en) * 1959-01-02 1900-01-01
FR1283004A (en) * 1960-03-10 1962-01-27 Ncr Co Capsular product and its manufacturing process
US3129103A (en) * 1960-05-16 1964-04-14 Ncr Co Ink coating for pressure sensitive transfer record sheet
JPS5034515B1 (en) * 1970-08-06 1975-11-08
BE788762A (en) * 1971-09-13 1973-01-02 Fuji Photo Film Co Ltd MICROCAPSULES PRODUCTION PROCESS
JPS5814253B2 (en) * 1974-04-10 1983-03-18 カンザキセイシ カブシキガイシヤ Bisyou capsule no Seizouhouhou

Also Published As

Publication number Publication date
AU514205B2 (en) 1981-01-29
FR2378561B1 (en) 1984-03-16
DE2803687C2 (en) 1986-05-07
DE2803687A1 (en) 1978-08-03
AU3281978A (en) 1979-08-02
FR2378561A1 (en) 1978-08-25
GB1567426A (en) 1980-05-14

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19971001