Glycol antifreeze mixtures

Details Glycol antifreeze mixtures Glycol antifreeze mixtures

1977-01-03

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, B01D 1904, C09K 500

Patent

active

040778959

ABSTRACT:
A glycol-based antifreeze formulation containing as a defoaming agent, from 0.001% to about 1.0% by weight of the reaction product of a polyglycerol having from 5 to 30 glycerol units, and a glycidyl ether having the formula ##STR1## wherein n is an integer from 1 to 20, R is hydrogen, methyl or ethyl, and Z is an alkyl group having from 1 to 8 carbon atoms or the group having the formula ##STR2##

REFERENCES:
patent: 2630439 (1953-03-01), Gunderson
patent: 2875156 (1959-02-01), Johnson
patent: 2948757 (1960-08-01), Pruitt
patent: 3078236 (1963-02-01), Hwa
patent: 3931029 (1976-01-01), Dutton et al.

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