FR2246305A1 - Microcapsules prepn by spraying - through an extruded curtain of enrobing material - Google Patents

Microcapsules prepn by spraying - through an extruded curtain of enrobing material

Info

Publication number
FR2246305A1
FR2246305A1 FR7335937A FR7335937A FR2246305A1 FR 2246305 A1 FR2246305 A1 FR 2246305A1 FR 7335937 A FR7335937 A FR 7335937A FR 7335937 A FR7335937 A FR 7335937A FR 2246305 A1 FR2246305 A1 FR 2246305A1
Authority
FR
France
Prior art keywords
spraying
prepn
microcapsules
encapsulated
dissolves
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.)
Withdrawn
Application number
FR7335937A
Other languages
French (fr)
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.)
Kodak Pathe SA
Original Assignee
Kodak Pathe SA
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 Kodak Pathe SA filed Critical Kodak Pathe SA
Priority to FR7335937A priority Critical patent/FR2246305A1/en
Publication of FR2246305A1 publication Critical patent/FR2246305A1/en
Withdrawn legal-status Critical Current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

Landscapes

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

Abstract

Solid or liquid material in grains or droplets from 0.005 to 1.0 m.m. diameter are encapsulated by spraying through a falling curtain of liquid enrobing material; cooling occurs by collection and washing with a solvent which also dissolves any unencapsulated material and form an additional film on the surface of the capsule. Used in the protection of corrosive materials during handling, e.g. solid caustic soda encapsulated in a paraffin/polyethylene wax mixture is safe to handle and inert to cold water. In hot water the capsules rupture and the caustic soda dissolves in the normal way.
FR7335937A 1973-10-09 1973-10-09 Microcapsules prepn by spraying - through an extruded curtain of enrobing material Withdrawn FR2246305A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7335937A FR2246305A1 (en) 1973-10-09 1973-10-09 Microcapsules prepn by spraying - through an extruded curtain of enrobing material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7335937A FR2246305A1 (en) 1973-10-09 1973-10-09 Microcapsules prepn by spraying - through an extruded curtain of enrobing material

Publications (1)

Publication Number Publication Date
FR2246305A1 true FR2246305A1 (en) 1975-05-02

Family

ID=9126093

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7335937A Withdrawn FR2246305A1 (en) 1973-10-09 1973-10-09 Microcapsules prepn by spraying - through an extruded curtain of enrobing material

Country Status (1)

Country Link
FR (1) FR2246305A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2627404A1 (en) * 1988-02-24 1989-08-25 Total France Coating particles with low m.pt material - by passing them through molten material under inert atmos. and collecting them when coating has solidified
EP1208908A2 (en) * 2000-11-28 2002-05-29 Xerox Corporation Methods of encapsulating cores using ink jets or fogs
WO2008081329A2 (en) * 2006-12-28 2008-07-10 Philip Morris Products S.A. Encapsulation of a hydrophilic substance in small capsules

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2627404A1 (en) * 1988-02-24 1989-08-25 Total France Coating particles with low m.pt material - by passing them through molten material under inert atmos. and collecting them when coating has solidified
EP1208908A2 (en) * 2000-11-28 2002-05-29 Xerox Corporation Methods of encapsulating cores using ink jets or fogs
EP1208908A3 (en) * 2000-11-28 2003-01-02 Xerox Corporation Methods of encapsulating cores using ink jets or fogs
WO2008081329A2 (en) * 2006-12-28 2008-07-10 Philip Morris Products S.A. Encapsulation of a hydrophilic substance in small capsules
WO2008081329A3 (en) * 2006-12-28 2008-10-30 Philip Morris Prod Encapsulation of a hydrophilic substance in small capsules

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Legal Events

Date Code Title Description
ST Notification of lapse