Method for preparing microcapsules having improved pre-walls, and microcapsules and photosensitive materials produced thereby
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United States of America Patent
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Jun 9, 1992
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N/A
app pub date -
Apr 19, 1990
filing date -
Dec 14, 1989
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Abstract
A method for preparing microcapsules which comprises: dispersing a hydrophobic oily liquid containing a pre-wall former in a continuous aqueous phase, the aqueous phase containing a chain extender which comprises a water soluble polyfunctional compound capable of reacting with the pre-wall former upon dispersion of the hydrophobic oily liquid in the continuous aqueous phase; and forming capsule walls around the droplets of the hydrophobic oily liquid in the continuous aqueous phase.
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