Antifreeze composition

Details Antifreeze composition Antifreeze composition

1997-03-13

1998-03-03

Green, Anthony

Compositions

Heat-exchange, low-freezing or pour point, or high boiling...

Organic components

252 75, 252 77, 252 781, 8647, C09K 500

Patent

active

057230609

ABSTRACT:
An antifreeze composition is provided having a polyhydric alcohol, a corrosion inhibitor and a colorant of the formula: ##STR1## wherein m and n are independently selected from 0, 1, 2 or 3; M is cation; A is SO.sub.3 M or SO.sub.2 R.sup.3, where R.sup.3 is alkylene-SO.sub.3 M; R.sup.1 is selected from the group consisting of hydroxy, C.sub.1-8 alkoxy, C.sub.1-8 alkyl, amino, sulfoxy, carboxy and R.sup.2 ; and R.sup.2 is NHR.sup.4, where R.sup.4 is triazine or triazine substituted with aminophenylsulfonate, chloro, dichloro, fluoro, or R.sup.2 is CO.sub.2 M.

REFERENCES:
patent: 3960740 (1976-06-01), Truett
patent: 4169203 (1979-09-01), Wingard et al.
patent: 5039439 (1991-08-01), Hansman, Jr. et al.
patent: 5098475 (1992-03-01), Winnik et al.
patent: 5102459 (1992-04-01), Ritter et al.
patent: 5532111 (1996-07-01), Holmes et al.
patent: 5643493 (1997-07-01), Connor et al.

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