Glycol based antifreeze concentrates inhibited with monocarboxyl

Details Glycol based antifreeze concentrates inhibited with monocarboxyl Glycol based antifreeze concentrates inhibited with monocarboxyl

1997-06-20

2000-06-27

Skane, Christine

Compositions

Etching or brightening compositions

252 76, C09K 500

Patent

active

060803312

ABSTRACT:
The present invention relates to novel silicate-, borate- and nitrate-free antifreeze concentrates based on alkylene glycols or derivatives thereof which include an inhibitor combination essentially comprising salts of carboxylic acids together with hydrocarbon-triazoles and/or -thiazoles. These antifreeze concentrates are, in particular, entirely free from any salts of inorganic acids as corrosion inhibitors. The invention also relates to ready-to-use aqueous coolant compositions comprising these antifreeze concentrates.

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