GB1475229A - Process for encapsulating water-immiscible substances - Google Patents

Process for encapsulating water-immiscible substances

Info

Publication number
GB1475229A
GB1475229A GB3465875A GB3465875A GB1475229A GB 1475229 A GB1475229 A GB 1475229A GB 3465875 A GB3465875 A GB 3465875A GB 3465875 A GB3465875 A GB 3465875A GB 1475229 A GB1475229 A GB 1475229A
Authority
GB
United Kingdom
Prior art keywords
encapsulated
aug
substance
linking agent
active substances
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
GB3465875A
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.)
Novartis AG
Original Assignee
Ciba Geigy 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 Ciba Geigy AG filed Critical Ciba Geigy AG
Publication of GB1475229A publication Critical patent/GB1475229A/en
Expired 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
    • B01J13/10—Complex coacervation, i.e. interaction of oppositely charged particles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
    • A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
    • A61K9/5089—Processes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Veterinary Medicine (AREA)
  • Dispersion Chemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Paints Or Removers (AREA)
  • Color Printing (AREA)

Abstract

1475229 Encapsulation CIBA GEIGY AG 20 Aug 1975 [21 Aug 1974] 34658/75 Heading B8C In a process for encapsulating a waterimmiscible substance, wherein the substance to be encapsulated is coated by coacervation with a water-soluble, hydrophilic polymeric compound and the resultant ooacervate cured with a cross-linking agent, the cross-linking agent is a hydrate or bisulphite adduct of a polyaerolein or an acrolein copolymer. Suitably at least two hydrophilic colloids with opposite charges are used as the hydrophilic polymeric compounds. The preferred hydrophilie polymeric compounds are gum arabic and gelatine. Liquid and solid active substances and also solutions of active substances in organic solvents may be encapsulated by the above process.
GB3465875A 1974-08-21 1975-08-20 Process for encapsulating water-immiscible substances Expired GB1475229A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1143574A CH591281A5 (en) 1974-08-21 1974-08-21

Publications (1)

Publication Number Publication Date
GB1475229A true GB1475229A (en) 1977-06-01

Family

ID=4373469

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3465875A Expired GB1475229A (en) 1974-08-21 1975-08-20 Process for encapsulating water-immiscible substances

Country Status (5)

Country Link
JP (1) JPS5142085A (en)
CH (1) CH591281A5 (en)
DE (1) DE2536629A1 (en)
FR (1) FR2282291A1 (en)
GB (1) GB1475229A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992016290A1 (en) * 1991-03-20 1992-10-01 Cartomar S.P.A. Process for the microencapsulation of a water-insoluble adhesive in envelopes of polymeric material
US5194263A (en) * 1989-01-20 1993-03-16 Allied Colloids Limited Particulate materials, their production and use
US5460817A (en) * 1988-01-19 1995-10-24 Allied Colloids Ltd. Particulate composition comprising a core of matrix polymer with active ingredient distributed therein
US6080710A (en) * 1993-11-16 2000-06-27 Warwick International Group Limited Bleach activator compositions
WO2010139564A2 (en) 2009-06-01 2010-12-09 Basf Se Wall form units and systems
WO2011000686A2 (en) 2009-07-03 2011-01-06 Basf Se Foam composition
EP2926659A1 (en) 2014-04-04 2015-10-07 LANXESS Deutschland GmbH Biocidal agent

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5460817A (en) * 1988-01-19 1995-10-24 Allied Colloids Ltd. Particulate composition comprising a core of matrix polymer with active ingredient distributed therein
US5194263A (en) * 1989-01-20 1993-03-16 Allied Colloids Limited Particulate materials, their production and use
WO1992016290A1 (en) * 1991-03-20 1992-10-01 Cartomar S.P.A. Process for the microencapsulation of a water-insoluble adhesive in envelopes of polymeric material
US6080710A (en) * 1993-11-16 2000-06-27 Warwick International Group Limited Bleach activator compositions
WO2010139564A2 (en) 2009-06-01 2010-12-09 Basf Se Wall form units and systems
WO2011000686A2 (en) 2009-07-03 2011-01-06 Basf Se Foam composition
US9249269B2 (en) 2009-07-03 2016-02-02 Basf Se Foam composition
EP2926659A1 (en) 2014-04-04 2015-10-07 LANXESS Deutschland GmbH Biocidal agent

Also Published As

Publication number Publication date
FR2282291B1 (en) 1977-12-16
FR2282291A1 (en) 1976-03-19
CH591281A5 (en) 1977-09-15
DE2536629A1 (en) 1976-03-04
JPS5142085A (en) 1976-04-09

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee