Calcium and magnesium salts of 4-(2-hydroxy-1-naphthylazo)-1-nap

Details Calcium and magnesium salts of 4-(2-hydroxy-1-naphthylazo)-1-nap Calcium and magnesium salts of 4-(2-hydroxy-1-naphthylazo)-1-nap

1974-08-28

1977-01-11

Wyman, Daniel E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

8 8, 106 50, C09B 2916, D06P 380, C03C 1300

Patent

active

040026051

ABSTRACT:
Dyes of the formula: ##STR1## wherein M is a metal selected from calcium and magnesium and provided that where M is calcium the dye is in the beta crystalline form are superior dyes for the dyeing of fiberglass in that they are resistant to crystal growth in dye pastes and recycle process water in the dyeing of fiberglass. Thus, in the spray dyeing of the fiberglass the dyes do not tend to clog the nozzle of the spraying device as do the corresponding salts of monovalent metals, such as the sodium salt.

REFERENCES:
patent: R9144 (1878-06-01), Caro
patent: 356672 (1887-01-01), Vollbrecht et al.
patent: 1016307 (1912-02-01), Wagner et al.
Colour Index, Third Edition, vol. 4, pp. 4078-4081, C.I. Number 15510, 15510:1, 15510:2, 15510:3 and 15620.

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