Contact allergy to trimethylolpropane triacrylate (TMPTA) in an aziridine plastic hardener |
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Authors: | Inger Dahlquist Sigfrid Freigert Lena Truison |
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Affiliation: | Department of Occupational Dermatology, University Hospital, S-221 85 Lund, Sweden |
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Abstract: | 4 workers developed hand and face dermatitis when exposed to a floor top coal. This contained a polyurethane arid a polyfunctional aziridine hardener and additives. The aziridine hardener was made by reacting propyleneimine with a polyfunctional acrylate, trimethylolpropane triacrylate (TMPTA). All 4 reacted to the hardener and to TMPTA, which is present in excess, 2 of them also reacted to pentacrythritol triacrylate (PETA), which can be used in the production of aziridine hardeners. TMPTA and PETA cross-react, and are known sensitizers in UV-hardening acrylates. The present finding shows that well-known sensitizers can be found in hidden sources when used in a quite different chemical process. |
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Keywords: | Aziridine hardener pentaerythritol triacrylate (PETA) plastic hardener polyurethane trimethylolpropane triacrylate (TMPTA) |
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