Antifreeze containing amino silanes, amino siloxanes and a hydro

Details Antifreeze containing amino silanes, amino siloxanes and a hydro Antifreeze containing amino silanes, amino siloxanes and a hydro

1979-01-02

1980-06-24

Weinblatt, Mayer

Compositions

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

Organic components

252 73, 252 75, 252 77, 252 781, 252 783, 252389R, 422 7, 422 14, 422 17, C09K 5000

Patent

active

042094160

ABSTRACT:
This invention relates to single-phase antifreeze or coolant concentrates comprising (1) an alcohol, (2) at least one of an amino siloxane, an amino silane or both an amino siloxane and an amino silane and a siloxane of the formula: ##EQU1## wherein R.sup.6 is a monovalent hydrocarbon group and e has a value of from 1 to 3, and (3) a hydroxybenzoic acid basic pH buffer preferably comprising para or ortho hydroxybenzoic acid or mixtures thereof. The concentrates are preferably used, upon dilution with about 30 to about 90 percent by weight of water based upon the weight of said concentrate, as antifreeze compositions for internal combustion engines. The alcohol is preferably ethylene glycol. The coolant compositions are effective in providing protection against corrosion of all metals and alloys used in industrial heat exchangers and are especially effective in inhibiting the corrosion of aluminum internal combustion engine and radiator components.

REFERENCES:
patent: 2094564 (1937-09-01), Schenck et al.
patent: 3248329 (1966-04-01), Pines et al.

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