Process for preparing oil-containing microcapsules

Compositions – Preservative agents – Anti-corrosion

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264 4, 427338, 428307, B01J 1302

Patent

active

039705854

ABSTRACT:
In a process for preparing oil-containing microcapsules comprising cooling a coacervate dispersion of a gelatin-containing colloid deposited around individual oil droplets to cause gelation of the colloid and subsequently hardening the gelled colloid by adding to the dispersion a hardening agent and adjusting the pH to the alkaline region, the improvement which comprises adding to the dispersion, after gelation but prior to hardening, an aqueous solution of an anionic high molecular weight electrolyte and an aqueous solution of an anionic surface active agent. Specific electrolytes and specific surface active agents are disclosed.

REFERENCES:
patent: 2969331 (1961-01-01), Brynko et al.
patent: 3154494 (1964-10-01), Speak et al.
patent: 3494872 (1970-02-01), Maierson et al.
patent: 3687865 (1972-08-01), Katayama et al.

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