Granular p-phenylenediamine color developing agent

Details Granular p-phenylenediamine color developing agent Granular p-phenylenediamine color developing agent

1974-04-09

1976-09-21

Klein, David

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

96 55, G03C 530, G03C 700

Patent

active

039817326

ABSTRACT:
A process for preparing a granular color developing agent, which comprises kneading a mixture of at least one excipient selected from the group consisting of water and lower alcohols and a p-phenylenediamine color developing agent, and granulating the mixture is disclosed.

REFERENCES:
patent: 2596978 (1952-05-01), Bortner et al.
patent: 2850764 (1958-09-01), Evans et al.
patent: 3297760 (1967-01-01), VON Hessert et al.
patent: 3645911 (1972-02-01), van Besauw et al.
patent: 3833377 (1974-09-01), Emoto et al.

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