Process of isolating cyclohexane-free ethylcellulose microcapsul

Details Process of isolating cyclohexane-free ethylcellulose microcapsul Process of isolating cyclohexane-free ethylcellulose microcapsul

Filed on

1973-05-25

Date issued

1978-08-15

Examiner

Lovering, Richard D.

Patent Class

Compositions

SubClass

Preservative agents

SubSubClass

Anti-corrosion

Other Related Categories

424 35, 427220, 427352, B01J 1302

Type

Patent

Status

active

Patent number

041070720

Description

ABSTRACT:
Ethylcellulose walled microcapsules, obtained from cyclohexane medium are heavily solvated with cyclohexane and tend to form lumps even after drying. Displacements of cyclohexane by pentane, hexane, heptane or octane or mixtures thereof during the isolation of the microcapsules gives a dry product which is essentially all discrete dry microcapsules.

REFERENCES:
patent: 3155590 (1964-11-01), Miller et al.
patent: 3173878 (1965-03-01), Reyes
patent: 3341416 (1967-09-01), Anderson et al.

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