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1. (WO2018080388) METHODS FOR PREVENTING MICROBIAL GROWTH AND MICROBIOLOGICALLY INFLUENCED CORROSION IN A BIODEGRADABLE AND/OR RENEWABLE FUEL, HYDRAULIC FLUID AND/OR LUBRICANT

Pub. No.:    WO/2018/080388    International Application No.:    PCT/SE2017/051055
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Sat Oct 28 01:59:59 CEST 2017
IPC: C10L 10/04
C10L 1/12
C10M 125/26
Applicants: TRIBORON INTERNATIONAL AB
Inventors: UNDÉN, Magnus
FIELD, Ian
NILSSON, Kristina
Title: METHODS FOR PREVENTING MICROBIAL GROWTH AND MICROBIOLOGICALLY INFLUENCED CORROSION IN A BIODEGRADABLE AND/OR RENEWABLE FUEL, HYDRAULIC FLUID AND/OR LUBRICANT
Abstract:
Fuels, hydraulic fluids and lubricants made of or comprising a portion of renewable hydrocarbon raw materials, as well as biodegradable fuels, hydraulic fluids and lubricants are known to support microbial growth. Highly toxicorganic biocides have been added to reduce microbial growth. The use of such biocides can now be avoided, by instead using a stable solution of boric acid in a solvent, the boric acid being completely dissolved or at least free from any particles larger than 100 nm in size, and adding this solution to the fuel, hydraulic fluid or lubricant to give a final concentration of boron in the range of 1–100 ppm, preferably 1 –50 ppm in the product. While preventing microbial growth, the addition of boron also reduces corrosion, in particular microbiologically induced corrosion (MIC).