GB1411954A - Process of encapsulating - Google Patents

Process of encapsulating

Info

Publication number
GB1411954A
GB1411954A GB5882572A GB5882572A GB1411954A GB 1411954 A GB1411954 A GB 1411954A GB 5882572 A GB5882572 A GB 5882572A GB 5882572 A GB5882572 A GB 5882572A GB 1411954 A GB1411954 A GB 1411954A
Authority
GB
United Kingdom
Prior art keywords
core
droplets
mentioned
solvent
chloroform
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
GB5882572A
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.)
Xerox Corp
Original Assignee
Xerox Corp
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 Xerox Corp filed Critical Xerox Corp
Publication of GB1411954A publication Critical patent/GB1411954A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/093—Encapsulated toner particles
    • G03G9/09392—Preparation thereof
    • 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
    • B01J13/12—Making microcapsules or microballoons by phase separation removing solvent from the wall-forming material solution
    • B01J13/125—Making microcapsules or microballoons by phase separation removing solvent from the wall-forming material solution by evaporation of the solvent
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/30—Layered or coated, e.g. dust-preventing coatings
    • C05G5/35—Capsules, e.g. core-shell
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2984—Microcapsule with fluid core [includes liposome]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2984—Microcapsule with fluid core [includes liposome]
    • Y10T428/2985—Solid-walled microcapsule from synthetic polymer
    • Y10T428/2987—Addition polymer from unsaturated monomers only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2989—Microcapsule with solid core [includes liposome]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

1411954 Encapsulation process XEROX CORP 20 Dec 1972 [30 Dec 1971] 58825/72 Heading B8C A core material is encapsulated by dissolving it, together with shell material, in a solvent mixture one component of which is substantially a non-solvent for the or at least one component of the core to form a single phase solution which is formed into droplets as a spray, suspending the droplets in a gas and removing solvent from the droplets whereby sequential separation of the core and shell material takes place and substantially dry capsules are obtained. The invention is described with particular reference to the production of toner particles for the development of electrostatic latent images on photoconductive surfaces comprising, e.g. the polymeric reaction product of isopropylidene diphenoxy propanol with adipic acid, the reaction product of a dimer acid with a linear diamine or "C 36 di-urea" encapsulated in a polymer such as a synthetic homopolymer, copolymer or terpolymer (many being mentioned) or a natural material such as gelatin, zein or grim arable. Numerous other core materials are mentioned, in particular water, oils and various polymeric materials. The core may also comprise an insoluble material, e.g. a pigment such as carbon black or a dye. Many solvents are mentioned, specific mixtures being chloroform/ isopropanol and chloroform/heptane. The spray of droplets may be produced by any of the conventional methods, e.g. using a pressure nozzle or centrifugal disc, it being contacted with air maintained at a suitable temperature.
GB5882572A 1971-12-30 1972-12-20 Process of encapsulating Expired GB1411954A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00214031A US3830750A (en) 1971-12-30 1971-12-30 Encapsulating substantially soluble portion of core material in substantially soluble shell material of different solubility

Publications (1)

Publication Number Publication Date
GB1411954A true GB1411954A (en) 1975-10-29

Family

ID=22797506

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5882572A Expired GB1411954A (en) 1971-12-30 1972-12-20 Process of encapsulating

Country Status (11)

Country Link
US (1) US3830750A (en)
JP (1) JPS4890977A (en)
BE (1) BE793246A (en)
BR (1) BR7208781D0 (en)
CA (1) CA983328A (en)
DE (1) DE2255102A1 (en)
ES (1) ES410224A1 (en)
FR (1) FR2165941B1 (en)
GB (1) GB1411954A (en)
IT (1) IT973317B (en)
NL (1) NL7217788A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3232827A1 (en) * 1981-09-04 1983-03-24 NL Industries, Inc., 10020 New York, N.Y. OPALIZING POLYMERS PARTICLES AND THEIR USE

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2330919A1 (en) * 1973-06-18 1975-01-30 Degussa METHOD FOR REDUCING THE HYGROSCOPICITY OF POLYCARBOXYLATES
US4144025A (en) * 1977-05-02 1979-03-13 Polaroid Corporation Process for making dispersions comprising spherical particles
CA1154189A (en) * 1978-07-05 1983-09-20 Nathan F. Cardarelli In-flight encapsulaton of particles
US4286020A (en) * 1978-07-05 1981-08-25 Environmental Chemicals, Inc. In-flight encapsulation of particles
JPS5564251A (en) * 1978-11-09 1980-05-14 Canon Inc Pressur-fixable capsule toner
US4353962A (en) * 1980-05-15 1982-10-12 Environmental Chemicals, Inc. In-flight encapsulation of particles
US4643960A (en) * 1980-06-02 1987-02-17 Minnesota Mining And Manufacturing Company Developing powder composition containing a fatty acid amide component
DE3261317D1 (en) * 1981-02-06 1985-01-10 Res Holdings Pty Ltd Dry toner and method of making same
JPS58100856A (en) * 1981-12-11 1983-06-15 Fuji Photo Film Co Ltd Manufacture of capsulated toner
GB2121203B (en) * 1982-04-06 1985-10-16 Canon Kk Making toner particles
JPS5995928A (en) * 1982-11-20 1984-06-02 Nitto Electric Ind Co Ltd Production of microcapsule containing liquid active material
JPS60125245A (en) * 1983-12-12 1985-07-04 Nitto Electric Ind Co Ltd Preparation of microcapsule containing liquid active substance
US4680200A (en) * 1985-07-22 1987-07-14 The Dow Chemical Company Method for preparing colloidal size particulate
US5173219A (en) * 1986-02-12 1992-12-22 Research Development Foundation Uniform spherical multilamellar liposomes of defined and adjustable size distribution
JPS6319662A (en) * 1986-07-14 1988-01-27 Kao Corp Spherical toner particles
US4861627A (en) * 1987-05-01 1989-08-29 Massachusetts Institute Of Technology Preparation of multiwall polymeric microcapsules
US5912017A (en) * 1987-05-01 1999-06-15 Massachusetts Institute Of Technology Multiwall polymeric microspheres
US4869992A (en) * 1988-06-28 1989-09-26 Eastman Kodak Company Mixed polymer toner for forming electrographic printing plates
US5023159A (en) * 1989-10-10 1991-06-11 Xerox Corporation Encapsulated electrophotographic toner compositions
DE4103966A1 (en) * 1991-02-09 1992-08-13 Basf Ag COLOR IMAGE PREPARATIONS
US5204208A (en) * 1991-10-07 1993-04-20 Xerox Corporation Processes for custom color encapsulated toner compositions
US7628979B1 (en) * 2005-04-20 2009-12-08 The United States Of America As Represented By The Secretary Of Agriculture Use of calco oil blue V in bait formulations for marking and controlling subterranean termites
DE202007002295U1 (en) 2007-02-13 2008-06-26 Lorenz, Anneliese F. Soaps with optical or elastic properties
US9108364B2 (en) * 2007-10-26 2015-08-18 Board Of Trustees Of The University Of Illinois Solvent-promoted self-healing materials
EP3175844A1 (en) 2010-04-09 2017-06-07 Pacira Pharmaceuticals, Inc. Large diameter synthetic membrane vesicles
US10525169B2 (en) 2010-10-20 2020-01-07 206 Ortho, Inc. Method and apparatus for treating bone fractures, and/or for fortifying and/or augmenting bone, including the provision and use of composite implants, and novel composite structures which may be used for medical and non-medical applications
US11291483B2 (en) 2010-10-20 2022-04-05 206 Ortho, Inc. Method and apparatus for treating bone fractures, and/or for fortifying and/or augmenting bone, including the provision and use of composite implants
EP2629780A4 (en) 2010-10-20 2014-10-01 206 Ortho Inc Implantable polymer for bone and vascular lesions
US11058796B2 (en) 2010-10-20 2021-07-13 206 Ortho, Inc. Method and apparatus for treating bone fractures, and/or for fortifying and/or augmenting bone, including the provision and use of composite implants, and novel composite structures which may be used for medical and non-medical applications
US11484627B2 (en) 2010-10-20 2022-11-01 206 Ortho, Inc. Method and apparatus for treating bone fractures, and/or for fortifying and/or augmenting bone, including the provision and use of composite implants, and novel composite structures which may be used for medical and non-medical applications
WO2015095745A1 (en) 2010-10-20 2015-06-25 206 Ortho, Inc. Method and apparatus for treating bone fractures, and/or for fortifying and/or augmenting bone, including the provision and use of composite implants, and novel composite structures which may be used for medical and non-medical applications
US11207109B2 (en) 2010-10-20 2021-12-28 206 Ortho, Inc. Method and apparatus for treating bone fractures, and/or for fortifying and/or augmenting bone, including the provision and use of composite implants, and novel composite structures which may be used for medical and non-medical applications
WO2013130877A1 (en) 2012-02-29 2013-09-06 206 Ortho, Inc. Method and apparatus for treating bone fractures, including the use of composite implants
US10010609B2 (en) 2013-05-23 2018-07-03 206 Ortho, Inc. Method and apparatus for treating bone fractures, and/or for fortifying and/or augmenting bone, including the provision and use of composite implants
AU2017357085A1 (en) * 2016-11-10 2019-06-27 206 Ortho, Inc. Method for treating bone fractures, and fortifying bone, using composite implants, for medical and non-medical applications
CN107188672A (en) * 2017-05-27 2017-09-22 金正大生态工程集团股份有限公司 A kind of dimerization acid-based epoxy resins film-coated controlled release fertilizer and preparation method thereof
CN113198399B (en) * 2021-05-20 2022-09-06 吉林建筑大学 Phase change microcapsule, preparation method and application thereof, and composite AB coating
CN117346424B (en) * 2023-12-06 2024-02-06 山东鑫泰达节能科技有限公司 Cooling and collecting device for sodium silicate preparation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1433421A (en) * 1964-02-12 1966-04-01 Dunlop Rubber Co Method and apparatus for the manufacture of coated microscopic particles
US3773919A (en) * 1969-10-23 1973-11-20 Du Pont Polylactide-drug mixtures

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3232827A1 (en) * 1981-09-04 1983-03-24 NL Industries, Inc., 10020 New York, N.Y. OPALIZING POLYMERS PARTICLES AND THEIR USE

Also Published As

Publication number Publication date
BR7208781D0 (en) 1973-09-27
AU5063372A (en) 1974-08-15
CA983328A (en) 1976-02-10
IT973317B (en) 1974-06-10
ES410224A1 (en) 1976-04-16
NL7217788A (en) 1973-07-03
JPS4890977A (en) 1973-11-27
US3830750A (en) 1974-08-20
BE793246A (en) 1973-06-22
DE2255102A1 (en) 1973-07-12
FR2165941A1 (en) 1973-08-10
FR2165941B1 (en) 1978-02-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee