ANTIMICROBIAL PROPERTIES OF BUTANOLAMINES AND PROPANOLAMINES IN METAL WORKING FLUIDS

Abstract
Seventeen propanolamines, 6 diisopropanolamines and 2 butanolamines were studied for their antimicrobial properties against a mixed flora of fungi and bacteria in cutting fluids. All of the propanolamines showed inhibitory properties in the lubricants. Isopropanolamines had very weak antimicrobial properties, and both butanolamine compounds were inhibitory. The most active compound found was L-2-methylamino-1-phenolpropanol, but other chemicals including DL-2-benzylamino-1-propanol, 3-diethylamino-1-propanol, 2-amino-2-methyl-1-propanol, 2-dimethylamino-2-methyl-1-propanol, 1-dimethyl-amino-3-propanol and 3-amino-1-propanol all showed good antimicrobial properties in the products.

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