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Catalytic effects of 1,1,3,3‐tetramethylguanidine for isocyanate reactions
Author(s) -
Geoghegan J. T.,
Roth R. W.
Publication year - 1965
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1965.070090325
Subject(s) - isocyanate , triethylamine , catalysis , phenyl isocyanate , chemistry , urea , reaction conditions , methylene , organic chemistry , polymer chemistry , polyurethane
1,1,3,3‐Tetramethylguanidine was found to be a more effective catalyst than triethylamine or 1,1,3,3‐tetramethyl‐1,4‐butanediamine and poorer than diazobicyclooctane for the reaction of phenyl isocyanate with 2‐ethylhexanol. Similar catalysis was found for the phenyl isocyanate‐water reaction. It is postulated that the actual catalyst is the reaction product between 1,1,3,3‐tetramethylguanidine and phenyl isocyanate, 1‐phenyl‐3‐[bis( N , N ‐dimethylamino)methylene]urea.