Glycol antifreeze mixtures

Details Glycol antifreeze mixtures Glycol antifreeze mixtures

1976-12-27

1978-03-07

Pitlick, Harris A.

Compositions

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

Organic components

252 73, 252 77, 252 79, 252321, 252358, 536 4, 536120, B01D 1904, C09K 500

Patent

active

040778940

ABSTRACT:
A glycol-based antifreeze formulation containing as a defoaming agent, from 0.001% to about 1.0% by weight of a mixture containing a compound of the formula ##STR1## WHEREIN R is an alkyl, alkoxyalkyl, hydroxyalkyl, or dihydroxyalkyl group having from 1 to 6 carbon atoms, R.sup.1 is hydrogen, methyl or ethyl, R.sup.2 is an alkyl group having 1 to 8 carbon atoms, p is an integer from 1 to 20, and n is an integer from 1 to 14; and a compound of the formula

REFERENCES:
patent: 3023170 (1962-02-01), Linn
patent: 3215636 (1965-11-01), Hagge et al.
patent: 3655645 (1972-04-01), Jacques
patent: 3931029 (1976-01-01), Dutton et al.
patent: 4011389 (1977-03-01), Langdon

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