FR2418671A1 - Microcapsules pour materiaux d'ecriture et leur procede de preparation - Google Patents

Microcapsules pour materiaux d'ecriture et leur procede de preparation

Info

Publication number
FR2418671A1
FR2418671A1 FR7905459A FR7905459A FR2418671A1 FR 2418671 A1 FR2418671 A1 FR 2418671A1 FR 7905459 A FR7905459 A FR 7905459A FR 7905459 A FR7905459 A FR 7905459A FR 2418671 A1 FR2418671 A1 FR 2418671A1
Authority
FR
France
Prior art keywords
microcapsules
writing materials
preparation process
metal
alkyl
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
FR7905459A
Other languages
English (en)
Inventor
Ilona Witz
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.)
Kores Holding Zug AG
Original Assignee
Kores Holding Zug AG
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 Kores Holding Zug AG filed Critical Kores Holding Zug AG
Publication of FR2418671A1 publication Critical patent/FR2418671A1/fr
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
    • B01J13/08—Simple coacervation, i.e. addition of highly hydrophilic material
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Color Printing (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

Microcapsules pour matériaux d'écriture fondés sur une réaction chimique colorée, qui contiennent comme acide de Lewis une -solution de chlorure d'un métal ayant une masse atomique de 50 à 66. Le matériau de paroi des microcapsules est constitué- d'alkyl-cellulose dont les groupements alkyle ont de 2 à 10 atomes de carbone, de préférence l'éthylcellulose, et par le fait que le chlorure métallique est présent en solution aqueuse à pH légèrement acide. Application à la réalisation de matériaux d'écriture d'autocopie.
FR7905459A 1978-03-03 1979-03-02 Microcapsules pour materiaux d'ecriture et leur procede de preparation Pending FR2418671A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT152478A AT355053B (de) 1978-03-03 1978-03-03 Mikrokapseln fuer aufzeichnungsmaterialien und verfahren zu deren herstellung

Publications (1)

Publication Number Publication Date
FR2418671A1 true FR2418671A1 (fr) 1979-09-28

Family

ID=3515445

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7905459A Pending FR2418671A1 (fr) 1978-03-03 1979-03-02 Microcapsules pour materiaux d'ecriture et leur procede de preparation

Country Status (6)

Country Link
JP (1) JPS54128982A (fr)
AT (1) AT355053B (fr)
BE (1) BE874481A (fr)
DE (1) DE7905795U1 (fr)
FR (1) FR2418671A1 (fr)
GB (1) GB2017624B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57103891A (en) * 1980-12-19 1982-06-28 Fuji Photo Film Co Ltd Microcapsule dispersing liquid
IE58110B1 (en) * 1984-10-30 1993-07-14 Elan Corp Plc Controlled release powder and process for its preparation
US8137684B2 (en) 1996-10-01 2012-03-20 Abraxis Bioscience, Llc Formulations of pharmacological agents, methods for the preparation thereof and methods for the use thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1209999B (de) * 1960-02-26 1966-02-03 Ibm Verfahren zur Herstellung von Mikrokapseln
DE1444405A1 (de) * 1961-01-30 1968-12-12 Ibm Verfahren zum Einkapseln polarer Loesungen in polymeres Material
DE2556083A1 (de) * 1975-02-25 1976-09-02 Kores Holding Zug Ag Druckempfindliches aufzeichnungsmaterial
FR2313212A1 (fr) * 1975-06-06 1976-12-31 Kores Holding Zug Ag Materiau de transfert
FR2355666A1 (fr) * 1976-06-23 1978-01-20 Kores Holding Zug Ag Materiau pour effectuer des traces

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1209999B (de) * 1960-02-26 1966-02-03 Ibm Verfahren zur Herstellung von Mikrokapseln
DE1444405A1 (de) * 1961-01-30 1968-12-12 Ibm Verfahren zum Einkapseln polarer Loesungen in polymeres Material
DE2556083A1 (de) * 1975-02-25 1976-09-02 Kores Holding Zug Ag Druckempfindliches aufzeichnungsmaterial
FR2313212A1 (fr) * 1975-06-06 1976-12-31 Kores Holding Zug Ag Materiau de transfert
FR2355666A1 (fr) * 1976-06-23 1978-01-20 Kores Holding Zug Ag Materiau pour effectuer des traces

Also Published As

Publication number Publication date
JPS54128982A (en) 1979-10-05
GB2017624A (en) 1979-10-10
AT355053B (de) 1980-02-11
BE874481A (fr) 1979-08-27
DE7905795U1 (de) 1979-06-13
GB2017624B (en) 1982-07-07
ATA152478A (de) 1979-07-15

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