Refrigeration liquid with blue leak indicator and process of usi

Details Refrigeration liquid with blue leak indicator and process of usi Refrigeration liquid with blue leak indicator and process of usi

1982-11-29

1984-03-13

Kittle, John E.

Compositions

Vaporization, or expansion, refrigeration or heat or energy...

With lubricants, or warning, stabilizing or anti-corrosion...

62114, 260378, C09K 504

Patent

active

044366418

ABSTRACT:
1,4-Bis(2,4,6-trialkylanilino)anthraquinone wherein the alkyls on each anilino group are selected from the group consisting of methyl and ethyl and one of the three alkyls on each anilino group is different from the other two, e.g. 1,4-bis(2,6-diethyl-4-methylanilino)anthraquinone, is disclosed as an unusually effective blue dye suitable for use as a visual leak indicator in halocarbon refrigerants or in refrigeration liquids comprising a halocarbon refrigerant in admixture with a refrigeration oil.

REFERENCES:
patent: 3770640 (1973-11-01), Bartlett
patent: 4083683 (1978-04-01), Botros
patent: 4170564 (1979-10-01), Brendle

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