Process for producing PVA microcapsules

Details Process for producing PVA microcapsules Process for producing PVA microcapsules

1990-07-10

1993-07-06

Stoll, Robert L.

Plastic and nonmetallic article shaping or treating: processes

Encapsulating normally liquid material

Liquid encapsulation utilizing an emulsion or dispersion to...

264 46, 264 43, 42721333, 42721336, B01J 1314, B01J 1320

Patent

active

052251179

ABSTRACT:
Microcapsules which comprise, (A) a wall comprising a mixture of zirconium chloride and at least one member selected from the group consisting of poly(vinyl alcohol) and its derivatives, and (B) a core material enclosed with the wall; and a process for producing the same. In this invention, any substance can be used as the core material irrespective of its hydrophicity or hydrophobicity, and there can be obtained microcapsules excellent in heat resistance, water resistance, and transparency by simple steps.

REFERENCES:
patent: 3201353 (1965-08-01), Corben
patent: 3565818 (1971-02-01), Bayless et al.
patent: 3574133 (1971-04-01), Bayless et al.
patent: 3576758 (1971-04-01), Emrick
patent: 3582495 (1971-06-01), Emrick
patent: 4244836 (1981-01-01), Frensch et al.
patent: 4269729 (1981-05-01), Maruyama et al.
patent: 4898781 (1990-02-01), Onouchi et al.

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