Method for producing microcapsules

Details Method for producing microcapsules Method for producing microcapsules

1988-05-13

1990-06-19

Thexton, Matthew A.

Plastic and nonmetallic article shaping or treating: processes

Encapsulating normally liquid material

Liquid encapsulation utilizing an emulsion or dispersion to...

42721334, 42840221, B01J 1302

Patent

active

049351729

ABSTRACT:
A method for producing microcapsules with an aminoaldehyde polycondensate as a wall material in an aqueous medium containing a water-soluble polymer is disclosed. As the water-soluble polymer, there is used a terpolymer comprising (A) .alpha.-methylstyrene, (B) styrene and (C) maleic anhydride or a quadripolymer comprising (A) .alpha.-methylstyrene, (B) styrene, (C) maleic anhydride and (D) an esterification product of maleic anhydride. This method is especially useful for making pressure-sensitive copy paper.

REFERENCES:
patent: 4089802 (1978-05-01), Foris et al.
patent: 4100103 (1978-07-01), Foris et al.
patent: 4233178 (1980-11-01), Fuchigami
patent: 4525520 (1985-07-01), Shioi et al.
patent: 4533599 (1985-08-01), Okumura et al.
patent: 4601863 (1986-07-01), Shioi et al.
patent: 4711749 (1987-12-01), Kosaka et al.

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