NL7309003A - Microcapsules for self copying paper - by emulsifying pigment-containing oil in stabilised aqueous polymer solution - Google Patents

Microcapsules for self copying paper - by emulsifying pigment-containing oil in stabilised aqueous polymer solution

Info

Publication number
NL7309003A
NL7309003A NL7309003A NL7309003A NL7309003A NL 7309003 A NL7309003 A NL 7309003A NL 7309003 A NL7309003 A NL 7309003A NL 7309003 A NL7309003 A NL 7309003A NL 7309003 A NL7309003 A NL 7309003A
Authority
NL
Netherlands
Prior art keywords
microcapsules
copying paper
polymer solution
aqueous polymer
containing oil
Prior art date
Application number
NL7309003A
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 filed Critical
Priority to NL7309003A priority Critical patent/NL7309003A/en
Priority to AT520174A priority patent/AT334405B/en
Priority to BE146069A priority patent/BE817071A/en
Publication of NL7309003A publication Critical patent/NL7309003A/en

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
    • B01J13/10—Complex coacervation, i.e. interaction of oppositely charged particles
    • 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)
  • Manufacturing Of Micro-Capsules (AREA)

Abstract

Microcapsules for the manufacture of self copying paper are prepd. without coacervation by (a) emulsifying a hydrophobic liquid, e.g. an oil, in an aqs. soln. of a natural polymer esp. gelatine/gum arabic, having a protective action, (b) adding a stabiliser during the formation of a protective layer on the substance to be encapsulated e.g. malachite green or carbon black, and (c) cooling in order to promote the conversion of the polymer sol. into a gel. Gives microcapsules with a uniform, controlled size range.
NL7309003A 1973-06-28 1973-06-28 Microcapsules for self copying paper - by emulsifying pigment-containing oil in stabilised aqueous polymer solution NL7309003A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL7309003A NL7309003A (en) 1973-06-28 1973-06-28 Microcapsules for self copying paper - by emulsifying pigment-containing oil in stabilised aqueous polymer solution
AT520174A AT334405B (en) 1973-06-28 1974-06-24 METHOD OF MANUFACTURING MICROSCOPIC SMALL CAPSULES
BE146069A BE817071A (en) 1973-06-28 1974-06-28 PROCESS FOR FORMING TINY CAPSULES FOR THE MANUFACTURE OF SELF-COPIING PAPER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7309003A NL7309003A (en) 1973-06-28 1973-06-28 Microcapsules for self copying paper - by emulsifying pigment-containing oil in stabilised aqueous polymer solution

Publications (1)

Publication Number Publication Date
NL7309003A true NL7309003A (en) 1974-12-31

Family

ID=19819170

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7309003A NL7309003A (en) 1973-06-28 1973-06-28 Microcapsules for self copying paper - by emulsifying pigment-containing oil in stabilised aqueous polymer solution

Country Status (3)

Country Link
AT (1) AT334405B (en)
BE (1) BE817071A (en)
NL (1) NL7309003A (en)

Also Published As

Publication number Publication date
AT334405B (en) 1976-01-10
ATA520174A (en) 1976-05-15
BE817071A (en) 1974-10-16

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