Yellow pyrazolone ester dyes for heat transfer printing

Details Yellow pyrazolone ester dyes for heat transfer printing Yellow pyrazolone ester dyes for heat transfer printing

1977-11-30

1980-11-18

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

8467, 8668, 106 20, 106 22, 428195, C09B 2922, C09B 2936, C09B 2950

Patent

active

042344816

ABSTRACT:
The application is concerned with new pyrazolone compounds having the structure: ##STR1## wherein R is hydrogen or halogen (especially fluorine, bromine and chlorine) and R.sub.1 and R.sub.2 independently of one another are hydrogen or halogen (especially bromine and chlorine) and R.sub.3 is lower alkyl (especially methyl, ethyl, propyl and butyl). The compounds are useful in heat transfer printing of polyester fabrics and impart yellow shades thereto. The application discloses a method of making the new compounds and discusses the utilization of the compounds in the heat transfer printing of polyester fabrics, in the preparation of ink formulations, and in making transfer sheets for heat transfer printing.

REFERENCES:
patent: 1809030 (1931-06-01), Geller
patent: 2439798 (1948-04-01), Dickey et al.
patent: 3019217 (1962-01-01), Joyce

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