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March 1985

Contact Allergy to Aziridine Paint Hardener

Author Affiliations

From the Department of Dermatology, The Oregon Health Sciences University, Portland.

Arch Dermatol. 1985;121(3):373-376. doi:10.1001/archderm.1985.01660030095027

• A painter experienced an extensive dermatitis when exposed to a paint primer (undercoating) used to protect wood siding. The primer was an acrylic emulsion with a polyfunctional aziridine added as a self-curing cross-linker or hardener. The polyfunctional aziridine cross-linker was made by reacting propyleneimine with a polyfunctional acrylate, trimethylolpropane triacrylate (TMPTA). Our patient reacted to the cross-linker and also reacted to TMPTA, which is present in excess in the cross-linker. He also cross-reacted to pentaerythritol triacrylate (PETA). Both TMPTA and PETA can be used in the production of aziridine hardeners and both are well known as sensitizers in radiation-dried acrylic printing inks and coatings.

(Arch Dermatol 1985;121:373-376)