Process for the purification of triphenylmethane compounds

Details Process for the purification of triphenylmethane compounds Process for the purification of triphenylmethane compounds

1982-12-23

1987-07-07

Raymond, Richard L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C09B 1110

Patent

active

046786139

ABSTRACT:
Triphenylmethane dyes are obtained in a purified or more concentrated condition which eliminates the excess aromatic amines and by-products obtained during the synthesis of the triphenylmethane dyes. These purified triphenylmethane dyes show special utility when used in combination with an electron acceptor (Lewis acid) to produce carbonless copy paper or when used as reactants in the manufacture of other dyes.

REFERENCES:
patent: 2422445 (1947-06-01), Stryker et al.
patent: 2429081 (1947-10-01), Steuber
patent: 3121115 (1964-02-01), Meuly
patent: 3652602 (1972-03-01), Schafer et al.
patent: 3671553 (1972-06-01), Papenfuss et al.
patent: 3679713 (1972-07-01), Feidman et al.
patent: 3925094 (1975-12-01), Papenfuss et al.
patent: 4226442 (1980-10-01), Carlson et al.
patent: 4238130 (1980-12-01), Burri
patent: 4247470 (1981-01-01), Hermann et al.
patent: 4272292 (1981-06-01), Mizuno et al.
The Chemistry of Synthetic Dyes and Pigments, edited by H. A. Lubs 1955, 274-289.

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