• Date 2020-08-31

Water-based varnishes, paints and adhesives require conservation with in-can preservatives, both, for their raw materials – polymer dispersions – and the end products in order to warrant the necessary shelf life. Isothiazolinones and formaldehyde donors are currently the most relevant active substances for this purpose. The former can induce allergical skin reactions while the latter are being classified as carcinogen of category 1B and therefore under obligation to be phased out in the future.

In this study it was examined if there are feasible alternative substances or procedures with comparable effectiveness for in-can preservation, but which have lower risks. Current literature was investigated and expert interviews were conducted with representatives from concerned industry branches and from workers’ compensation boards.

The report is available for free.