Compositions – Preservative agents – Anti-corrosion
Patent
1973-04-24
1976-07-20
Lovering, Richard D.
Compositions
Preservative agents
Anti-corrosion
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.
Katayama Shizuo
Kiritani Masataka
Matsukawa Hiroharu
Fuji Photo Film Co. , Ltd.
Lovering Richard D.
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