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Document ID (ISN)41968
CIS number 84-1049
ISSN - Serial title 0465-546X - Medicina y seguridad del trabajo
Year 1982
Convention or series no.
Author(s) Conde-Salazar L., Romero Fuentes V., Guimaraens Juanena D., Martín Moreno L.
Title Allergic contact eczema in the graphic arts - Sensitivity to photopolymers (Letterflex)
Original title Eczema alérgico de contacto en artes gráficas. Sensibilidad a fotopolímeros (Letterflex [in Spanish]
Bibliographic information Oct.-Dec. 1982, Vol.30, No.120, p.253-258. Illus. 10 ref.
Abstract The Letterflex process is analysed with regard to the chemical exposures and the risks involved. Reactants used are 2,4-toluene diisocyanate and trimethylpropane diethyl ether, with the antioxidant 2,6-di-tert-butyl-p-methylphenol and the catalyst dibutyltin dilaurate. The resulting prepolymer is acted on by a polymerising agent, pentaerythritol tetrakis-3-mercaptopropionate (politiol). 3-Mercaptopropionic acid is used as hardener. In the clinical case described, the subject showed a positive patch test reaction to the prepolymer in concentrations of 0.1 and 1% and a negative reaction to politiol, which has been reported as being responsible for contact dermatitis elsewhere.
Descriptors (primary) printing industry; eczema; skin allergies; photopolymers
Descriptors (secondary) 2,6-di-tert-butyl-p-cresol; polyurethanes; case study; pentaerythritol tetrakis(3-mercaptopropionate); 2,4-tolylene diisocyanate; dibutyltin dilaurate; 3-mercaptopropionic acid
Document type D - Periodical articles
Subject(s) Occupational pathology
Broad subject area(s)
Browse category(ies) Printing, photography and photocopying industry
Skin diseases