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Document ID (ISN)60840
CIS number 93-1633
ISSN - Serial title 1120-2971 - Prevenzione oggi
Year 1990
Convention or series no.
Author(s) Benvenuti F., Conte C., Forte U., Marchiori A., Monaco E., Sernia S.
Title Risks of exposure to isocyanates in the production and processing of polyurethane foam (Note II: Hygienic and environmental aspects connected with finishing operations)
Original title Il rischio da esposizione ad isocianati nella produzione e lavorazione di poliuterani espansi (nota II: aspetti igienico-ambientali connessi con le operazioni di finitura) [in Italian]
Bibliographic information Apr.-June 1990, Vol.2, No.2, p.22-33. Illus. 10 ref.
Abstract The aim of this study was to verify the existence of the risk of exposure to free isocyanates during finishing operations involving polyurethane foam, to identify possible technical improvements in cutting operations, and to verify their effectiveness. Environmental sampling of isocyanate fumes was carried out by air suction and scrubbing. Samples of synthetic resin dusts were taken by air suction and filtering through micropore membrane filters. As regards the processing of rigid foams, free isocyanates are released into the atmosphere during cutting operations. Significant quantities of respirable dust are also produced. The result is a two-phase system composed of particles and isocyanate fumes. The toxicological characteristics of such a system are completely different from those of the two separate components. Hence the need to provide polyurethane finishing workshops with emission removal systems, and in particular to install aspirators and other air-cleaning equipment in the cutting zone.
Descriptors (primary) air purification; plastics converting industry; isocyanates; polyurethanes
Descriptors (secondary) exhaust ventilation; respirable dust
Document type D - Periodical articles
Country / State or ProvinceItaly
Subject(s) Chemicals, plastics and rubber
Broad subject area(s) Chemical safety
Browse category(ies) Heating and air conditioning
Isocyanates
Cyano compounds