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  • Title: Occupational sensitization to epoxy resin and reactive diluents in marble workers.
    Author: Angelini G, Rigano L, Foti C, Grandolfo M, Veña GA, Bonamonte D, Soleo L, Scorpiniti AA.
    Journal: Contact Dermatitis; 1996 Jul; 35(1):11-6. PubMed ID: 8896948.
    Abstract:
    10 out of 22 marble workers handling a bicomponent resin, based on epoxy resin and ortho-cresyl glycidyl ether (CGE), developed contact dermatitis and airborne contact dermatitis within 20 days to 2 months of exposure. All 22 subjects were patch tested with epoxy resin, bisphenol A, epichlorohydrin and a series of reactive diluents. The 10 symptomatic subjects were all positive to the reactive diluent CGE, and 4 of them also to epoxy resin. The other reactive diluents that gave positive reactions were phenyl glycidyl ether (7 cases), cyclohexanedimethanol glycidyl ether (2 cases), 1,6-hexanediol diglycidyl ether (2 cases) and allyl glycidyl ether (1 case). The findings of our study suggest that allergic potential is directly proportional to the electronic charge available, for all electron-rich molecules (solvents, high and low polymers, reagents) that interact with the glycidyl ether group. Lesser, but still noticeable, effects are detected when activation of the glycidyl group is related to the possible formation of intramolecular hydrogen bonds. In practice, the occupational problem was partly solved by changing the type of glycidyl ether.
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