| Document ID (ISN) | 26222 |
| CIS number |
76-1950 |
| ISSN - Serial title |
0340-7047 - Zentralblatt für Arbeitsmedizin, Arbeitsschutz und Prophylaxe |
| Year |
1976 |
| Convention or series no. |
|
| Author(s) |
Seemann J., Wölcke U. |
| Title |
Formation of toxic isocyanate vapours on thermal decomposition of polyurethane paints and their polyfunctional hardeners |
| Original title |
Über die Bildung toxischer Isocyanatdämpfe bei der thermischen Zersetzung von Polyurethanlacken und ihren polyfunktionellen Härtern [in German] |
| Bibliographic information |
Jan. 1976, Vol.26, No.1, p.2-9. 22 ref. |
| Abstract |
A series of accidents prompted investigation of the toxicity of polyurethane (PUR) pyrolysis vapours. The chemistry of PUR paints and avoidance of poisoning by the use of diisocyanates with low vapour pressure (Desmodur), and the known facts on pyrolysis of PUR resins are first dealt with. The conditions (pyrolysis temperature of 400-600°C) and results of studies with commercial hardeners and paints are reported. In all cases diisocyanates were detected, the extent of the reformation varying considerably. The values were however considerably higher for polyisocyanates than for PUR varnishes. In the presence of PUR paints, the possibility of a hazard from thermal decomposition products should therefore always be borne in mind. |
| Descriptors (primary) |
polyurethanes; isocyanates; plastic coating; pyrolysis products; paints |
| Descriptors (secondary) |
acute poisoning; pyrolysis; hexamethylene diisocyanate; experimental determination; hardeners; irritation; 2,4-tolylene diisocyanate |
| Document type |
- |
| Subject(s) |
Toxic and dangerous substances
|
| Broad subject area(s) |
|
| Browse category(ies) |
Surface treatment
Fires
Isocyanates
Cyano compounds
|
