Premium
Comments on the reactivity of methoxy pentadecyl phenyl isocyanate isomers
Author(s) -
Carignan Yvon P.
Publication year - 1969
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.1969.070130810
Subject(s) - isocyanate , phenyl isocyanate , reaction rate constant , polymer chemistry , reactivity (psychology) , chemistry , kinetics , first order , medicinal chemistry , organic chemistry , polyurethane , mathematics , medicine , physics , alternative medicine , pathology , quantum mechanics
The reactions of 2‐methoxy‐4‐pentadecyl phenyl isocyanate and 4‐methoxy‐2‐pentadecyl phenyl isocyanate with excess 2‐ethyl hexanol originally reported by Ghatge and co‐workers to follow zero order kinetics have been re‐examined on the basis of their data and shown to follow more realistically the product catalyzed pseudo first order kinetics. The new rate constant, k s (sec −1 ) for the spontaneous reaction and k p (li. mole −1 sec −1 ) for the product catalyzed reaction are found to be: k s = 0.57 × 10 −6 and k p = 34 × 10 −6 for 2‐methoxy‐4‐pentadecyl phenyl isocyanate and k s = 1.2 × 10 −6 and k p = 82 × 10 −6 for 4‐methoxy‐2‐pentadecyl phenyl isocyanate.