Discrete polyurea microcapsules

Details Discrete polyurea microcapsules Discrete polyurea microcapsules

B - Operations, Transporting

01

J

117/46.5

B01J 13/02 (2006.01) A61K 9/50 (2006.01) B01J 13/16 (2006.01)

Patent

CA 1094402

IMPROVED DISCRETE POLYUREA MICROCAPSULES Abstract of the Disclosure Improved discrete polyurea microcapsules and their preparation effected by the addition of microcapsule polymer wall solvents or non- solvents in the organic phase prior to microencapsulation, wherein said improvement is the result of the formation of distinct polymer walls by excluding water from the organic phase or by selectively controlling wall porosity or both effects.

263716

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