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1. (WO1983000449) MICROENCAPSULATION PROCESS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/1983/000449 International Application No.: PCT/GB1982/000249
Publication Date: 17.02.1983 International Filing Date: 09.08.1982
IPC:
A23K 1/00 (2006.01) ,A61K 9/50 (2006.01) ,B01J 13/16 (2006.01)
A HUMAN NECESSITIES
23
FOODS OR FOODSTUFFS; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
K
FEEDING-STUFFS SPECIALLY ADAPTED FOR ANIMALS; METHODS SPECIALLY ADAPTED FOR PRODUCTION THEREOF
1
Animal feeding-stuffs
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
K
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
9
Medicinal preparations characterised by special physical form
48
Preparations in capsules, e.g. of gelatin, of chocolate
50
Microcapsules
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
13
Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
02
Making microcapsules or microballoons
06
by phase separation
14
Polymerisation, crosslinking
16
Interfacial polymerisation
Applicants:
HAYWORTH, Lawrence, Thomas [GB/GB]; GB (UsOnly)
MARS, INCORPORATED [US/US]; Westgate Park 1651 Old Meadow Road McLean, VA 22102, US (AllExceptUS)
Inventors:
HAYWORTH, Lawrence, Thomas; GB
Agent:
REDDIE & GROSE; 16 Theobalds Road London, WC1X 8PL, GB
Priority Data:
812456311.08.1981GB
Title (EN) MICROENCAPSULATION PROCESS
(FR) PROCEDE DE MICRO-ENCAPSULATION
Abstract:
(EN) In a microencapsulation process involving an interfacial polymerization reaction between a compound containing amine groups and a polybasic acid chloride or anhydride, the polymerization being carried out in an emulsion of an aqueous solution in a hydrophobic organic liquid, the reaction is terminated by introducing water into the hydrophobic phase of the emulsion where it reacts with and destroys the residual acid chloride or anhydride.
(FR) Dans un procédé de micro-encapsulation entraînant une réaction de polymérisation des surfaces de séparation entre un composé contenant des groupes d'amines et un chlorure ou anhydride d'acide polybasique, cette polymérisation étant exécutée dans une émulsion d'une solution aqueuse dans un liquide organique hydrophobe, la réaction est arrêtée en introduisant de l'eau dans la phase hydrophobe de l'émulsion où elle réagit avec le chlorure ou anhydride de l'acide résiduel en le détruisant.
Designated States: AU, DK, FI, HU, JP, LK, MC, MG, MW, NO, RO, SU, US
European Patent Office (EPO) (AT, BE, CH, DE, FR, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)