Analytical Investigations on a Releasing Agent Application in Aluminium Diecasting (6 pp)

Abstract

Investigations on further differently composed releasing agents, e.g. powders, would be desirable. A substitution of nonylphenol ethoxylates by less harmful components would surely be an improvement of a releasing agent with regard to work safety and health care, because of avoiding the emission of toxic and endocrine active nonylphenols. The surprisingly wide range of biodegradability of the investigated releasing agents points to an optimization potential, that has obviously not yet been considered.

Technological evaluation of a novel glycerol based biocide-free metalworking fluid

“…Several sorbents were used to sample different substance classes that might likely occur (Wichmann et al, 2005;Heitmann et al, 2009).…”

Occurrence and temporal variations of the xenoestrogens bisphenol A, 4-tert-octylphenol, and tech. 4-nonylphenol in two German wastewater treatment plants

“…4-tert-Octylphenol andtech. 4-nonylphenol (until 2005) are used mainly for the production of alkylphenol ethoxylates, and in minor amounts for the production of phenol resins, as antioxidants in synthetic polymers and as agents applied in the aluminium die casting process (Wichmann et al 2005). Alkylphenol ethoxylates are used, among others, as nonionic surfactants in household and industrial detergents and reach the hydrosphere by household and industrial wastewater (Leisewitz et al 2003).…”