Polyurea and polyurea-epoxy microcapsules

Details Polyurea and polyurea-epoxy microcapsules Polyurea and polyurea-epoxy microcapsules

B - Operations, Transporting

01

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42/15, 117/46.6

B01J 13/08 (2006.01) B01J 13/16 (2006.01) B41M 5/165 (2006.01) C08G 18/08 (2006.01) C08G 18/32 (2006.01) C08K 9/10 (2006.01)

Patent

CA 1300987

ABSTRACT An improved process for the production of microcapsules by the use of hydrogen transfer polymerization in the presence of a mixture of emulsifiers including either an aqueous solution of a sodium salt of naphthalene-sulfonic acid- formaldehyde condensate or diphenyloxide disulfonate with a polyvinyl alcohol. The process is particu- larly useful for the production of microcapsules containing a colorless dye intermediate used in carbonless copy paper (CCP) applications.

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