GB872438A - Heat rupturable core-containing capsules - Google Patents

Heat rupturable core-containing capsules

Info

Publication number
GB872438A
GB872438A GB33302/59A GB3330259A GB872438A GB 872438 A GB872438 A GB 872438A GB 33302/59 A GB33302/59 A GB 33302/59A GB 3330259 A GB3330259 A GB 3330259A GB 872438 A GB872438 A GB 872438A
Authority
GB
United Kingdom
Prior art keywords
core
dispersed
oils
capsules
wall
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
GB33302/59A
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.)
NCR Voyix Corp
National Cash Register Co
Original Assignee
NCR Corp
National Cash Register Co
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 NCR Corp, National Cash Register Co filed Critical NCR Corp
Publication of GB872438A publication Critical patent/GB872438A/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
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/28—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using thermochromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat- decomposable compounds, e.g. gas- liberating
    • B41M5/287—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using thermochromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat- decomposable compounds, e.g. gas- liberating using microcapsules or microspheres only
    • 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
    • B01J13/025—Applications of microcapsules not provided for in other subclasses
    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/35—Heat-activated

Abstract

Micro- or macroscopic heat-rupturable capsules with a water-insoluble or water-immersible core have included in their walls and/or core a solid material which decomposes into a gas when heated above a given temperature and which is inert with respect to the wall and core materials. Specified materials of this type are p,p1 - oxybis - (benzenesulphonyl - hydrazide); azodicarbonamide and dinitrosopentamethylene tetramine. The disclosed techniques (in which chlorinated diphenyl is encapsulated) are: (a) the core material is dispersed in an aqueous medium containing a hydrophilic colloid, e.g. gelatin, gelatin complexes with hydrophillic colloids such as gum arabic, protein film-forming proteins, e.g. zein, synthetic film-forming substances, e.g. polymers of styrene or divinyl benzene, polyethylenemalic anhydride copolymer or its vinyl analogue which is induced to coacervate, e.g. by alteration of pH and thus form a wall around the dispersed core material which may subsequently be hardened and (b) by the method disclosed in Specification 867,797, whereby a similarly dispersed monomeric material is induced to polymerize on the surface of the dispersed core material. Multiple walled capsules including those having walls of both of the above types may also be prepared. In all cases, the gas-forming substance is introduced into the core and/or wall material and dispersed therein or therewith before formation of the capsules. Typical core materials or components specified are: evaporable solvents or fuels, e.g. toluene, xylene, kerosene and other light petroleum fractions; Vitamin A oils, essential oils, vegetable oils, volatile synthetic oils, e.g. methyl salicylate, adhesives which are naturally tacky or are made so by solvents or plasticizers, greases, hard oils, oil-based medicinal preparations, dyes, solid or in solution, e.g. Sudan III, crystal violet lactone, benzoyl-leuco-methylene blue, carbon black, magnetic iron oxide, and aspirin. Specification 751,600 also is referred to.
GB33302/59A 1958-10-23 1959-10-01 Heat rupturable core-containing capsules Expired GB872438A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76905858A 1958-10-23 1958-10-23

Publications (1)

Publication Number Publication Date
GB872438A true GB872438A (en) 1961-07-12

Family

ID=25084312

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33302/59A Expired GB872438A (en) 1958-10-23 1959-10-01 Heat rupturable core-containing capsules

Country Status (6)

Country Link
BE (1) BE583014A (en)
CH (1) CH395031A (en)
DE (1) DE1151784B (en)
FR (1) FR1237689A (en)
GB (1) GB872438A (en)
NL (2) NL106610C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4413069A (en) * 1982-09-20 1983-11-01 Marshall Joseph W Composition with selectively active modifier and method
GB2168163A (en) * 1984-10-12 1986-06-11 Fuji Photo Film Co Ltd Heat-sensitive recording materials
EP0630757A1 (en) * 1993-06-01 1994-12-28 Toyo Kasei Kogyo Company Limited Novel nonvolatile thermal micro-capsule toner

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1254126B (en) * 1961-06-20 1967-11-16 Henkel & Cie Gmbh Encapsulation of liquids
DE1728237B1 (en) * 1968-09-14 1971-11-25 Karlsruhe Augsburg Iweka Propellant and propellant built up with this propellant, especially for cartridges
AT319191B (en) * 1969-08-01 1974-12-10 Bush Boake Allen Ltd Double-walled water-insoluble microcapsules for the delivery of flavoring substances
FR2625745B1 (en) * 1988-01-08 1992-10-09 Picardie Lainiere THERMAL ADHESIVE TEXTILE PRODUCT COMPRISING A MICROENCAPSULATED CROSSLINKING AGENT
JP3589440B2 (en) * 1997-11-28 2004-11-17 Ｙｋｋ株式会社 Hidden slide fastener release fitting
CN111251521B (en) * 2018-12-03 2022-07-22 沈欣 Method for preparing liquid bead pill

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR772435A (en) * 1933-06-27 1934-10-29 Improvements to medicinal capsules
DE923006C (en) * 1952-07-02 1955-01-31 Degussa Process to suppress the self-inflammability of phosphides of alkalis, alkaline earths or earth metals and of hydrogen phosphide evolved from them
US2800457A (en) * 1953-06-30 1957-07-23 Ncr Co Oil-containing microscopic capsules and method of making them
USRE24899E (en) * 1953-06-30 1960-11-29 Oil-containrab

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4413069A (en) * 1982-09-20 1983-11-01 Marshall Joseph W Composition with selectively active modifier and method
GB2168163A (en) * 1984-10-12 1986-06-11 Fuji Photo Film Co Ltd Heat-sensitive recording materials
EP0630757A1 (en) * 1993-06-01 1994-12-28 Toyo Kasei Kogyo Company Limited Novel nonvolatile thermal micro-capsule toner

Also Published As

Publication number Publication date
FR1237689A (en) 1960-07-29
NL106610C (en)
CH395031A (en) 1965-07-15
DE1151784B (en) 1963-07-25
NL243487A (en)
BE583014A (en)

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