NASA NTRS · 19660000644
Process produces chlorinated aromatic isocyanate in high yield
Abstract
Tetrachloreterephthaloyl chloride reacts with sodium azide in an atmosphere of nitrogen to form a high yield of tetrachloro-p-phenylene diisocyanate. The chlorinated diisocyanate should have application as an intermediate in the preparation of polyurethane foams. The high halogen content would impart added flame resistance to these foams.
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Trischler, F.. 1966-12-01. Process produces chlorinated aromatic isocyanate in high yield. https://ntrs.nasa.gov/citations/19660000644
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