1989
DOI: 10.1002/prac.19893310327
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1,1‐Dichloro‐2,2‐bis(4‐isocyanatophenyl)ethylene – a new intermediate for the manufacture of thermo‐resistant and self‐extinguishing polyurethane resins

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Cited by 3 publications
(1 citation statement)
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“…Polymers derived from the bisphenol of chloral, or 1,1-dichloro-2,2-(4-hydroxyphenyl)ethane (BPC), show exceptionally good fire resistance. Investigations into decomposition pathways of BPC-containing polymers suggest that char formation may proceed through diphenylacetylene derivatives, arising either from base-induced elimination of chlorine on BPC to give a carbene, which undergoes phenyl migration to diphenylacetylene (Scheme ), or through multiple proposed steps at elevated temperatures. Thus, while chlorine in BPC sets up the rearrangement chemistry, the role of diphenylacetylene must be of considerable importance. Efforts toward nonhalogenated precursors with such char-forming properties provide the impetus for this work.…”
Section: Introductionmentioning
confidence: 99%
“…Polymers derived from the bisphenol of chloral, or 1,1-dichloro-2,2-(4-hydroxyphenyl)ethane (BPC), show exceptionally good fire resistance. Investigations into decomposition pathways of BPC-containing polymers suggest that char formation may proceed through diphenylacetylene derivatives, arising either from base-induced elimination of chlorine on BPC to give a carbene, which undergoes phenyl migration to diphenylacetylene (Scheme ), or through multiple proposed steps at elevated temperatures. Thus, while chlorine in BPC sets up the rearrangement chemistry, the role of diphenylacetylene must be of considerable importance. Efforts toward nonhalogenated precursors with such char-forming properties provide the impetus for this work.…”
Section: Introductionmentioning
confidence: 99%