Hydroxybenzoic acid as pH buffer and corrosion inhibitor for ant

Details Hydroxybenzoic acid as pH buffer and corrosion inhibitor for ant Hydroxybenzoic acid as pH buffer and corrosion inhibitor for ant

1979-01-02

1980-11-18

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, 252396, 422 14, 422 7, 422 17, C09K 1532

Patent

active

042344409

ABSTRACT:
This invention relates to single-phase antifreeze or coolant concentrates comprising an alcohol, a silicone-silicate copolymer and an organic basic pH buffer and corrosion inhibitor comprising a hydroxybenzoic acid or mixtures thereof. The concentrates are preferably used as coolants either undiluted or upon dilution with about 30 to about 90 percent by weight of water based upon the total weight of the coolant. The alcohol is preferably ethylene glycol. The coolant compositions are especially effective in inhibiting the corrosion of aluminum internal combustion engine and radiator components.

REFERENCES:
patent: 2094564 (1927-09-01), Schenck et al.
patent: 3198820 (1968-08-01), Pines et al.

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