Process for producing microcapsules containing hydrophobic core

Details Process for producing microcapsules containing hydrophobic core Process for producing microcapsules containing hydrophobic core

1982-12-22

1984-09-11

Lovering, Richard D.

Plastic and nonmetallic article shaping or treating: processes

Encapsulating normally liquid material

Liquid encapsulation utilizing an emulsion or dispersion to...

42840221, 264 43, 346215, B01J 1302

Patent

active

044709358

ABSTRACT:
In preparing microcapsules for carbonless duplicating sheets using aminoaldehyde polycondensate as a capsule wall in a system in which the capsule wall is formed around the hydrophobic material in hydrophilic medium, wherein said hydrophilic medium comprises a combination of an anion-modified polyvinyl alcohol derivative containing sulfo group or sulfonyldioxyd group and an anion-modified water-soluble polymer containing a carboxyl group. The present invention provides a process for producing a high-concentration, low-viscosity microcapsule slurry having advantages such as easy workability, good stability for emulsion, etc.

REFERENCES:
patent: 4001140 (1977-01-01), Foris et al.
patent: 4219604 (1980-08-01), Kakimi et al.
patent: 4221710 (1980-09-01), Hoshi et al.
patent: 4328119 (1982-05-01), Iwasaki et al.
patent: 4353809 (1982-10-01), Hoshi et al.

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