Tetracarboxylic acid ester substituted disazo pigments

Details Tetracarboxylic acid ester substituted disazo pigments Tetracarboxylic acid ester substituted disazo pigments

1976-05-13

1977-01-18

Warren, Charles F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260208, 260174, 106288Q, C09B 4300

Patent

active

040038866

ABSTRACT:
A compound of the formula ##STR1## in which A represents phenylene which may be substituted by chlorine, bromine, methyl, methoxy, ethoxy or cyano, X represents hydrogen or chlorine, and R represents methyl or ethyl, was prepared. The compounds are useful for pigmenting high molecular organic materials such as polyamides, polyurethanes and polyesters. The compounds have excellent fastness to light, migration, weather and to alkali.

REFERENCES:
patent: 1999438 (1935-04-01), Bonhote et al.
patent: 3169955 (1965-02-01), Siebert et al.
patent: 3413279 (1968-11-01), Mueller
patent: 3609135 (1971-11-01), Ribka
patent: 3711461 (1973-01-01), Pretzer et al.

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