We have been working on formaldehyde-
Removing formaldehyde release biocides from water-
Traditional low cost semi-
To match the low cost and performance of these boron bio-
The common approach has been to use different types of amines to give bio-
DCHA (dicyclohexylamine) has been used as it gives good bio-
Synergex / Advantex ex Taminco is used extensively in USA. It is as effective as DCHA in our lab tests, but it is a secondary amine and so will not have broad acceptability. It does offer a potentially cost effective approach to replacing formaldehyde release biocides in boron based cutting fluids. We have tests ongoing.
Synergex T ex Taminco is a tertiary amine as an alternative to Synergex/Advantex. It does not have as good bio-
Genamin CH 020 is a tertiary amine with potential interest as a bio-
There is a possible approach to replace formaldehyde release biocides combining bio-
MIT (methylisothiazolinone) and BIT (benzylisothiazolinone) in combination can be used at a level below the sensitising labelling requirement of the concentrate. However BIT is known to have stability issues in the presence of amines.
MIT could be used alone with amines, but the spectrum of performance may not be sufficient. Tests are ongoing.