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Aminimides. XI. Modified polystyrenes containing pendent aminimide or isocyanate residues
Author(s) -
Culbertson B. M.,
Randen N. A.
Publication year - 1971
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.1971.070151101
Subject(s) - isocyanate , polymer chemistry , styrene , polymer , amine gas treating , chemistry , reactivity (psychology) , hydrochloride , salt (chemistry) , ammonium , copolymer , organic chemistry , polyurethane , medicine , alternative medicine , pathology
The hydrochloride salt of 1,1‐dimethyl‐1‐(2‐hydroxypropyl)amine methacrylimide (DHA) was synthesized and shown to readily homo‐ and copolymerize with styrene to produce soluble polymers containing pendent quaternary ammonium groups. These polymers may be treated with base to provide modified polystyrenes containing pendent aminimide residues. The latter polymers may be thermolyzed in solution or in the solid phase to produce modified polystyrenes containing pendent isocyanate groups. If the thermolysis is carried out in the presence of “isocyanate reactive” moieties, high molecular weight, crosslinked polymers may be synthesized. The reactivity ratios of DHA · HCl with styrene were determined: r 1 = 0.33 and r 2 = 0.35. The Alfrey‐Price Q and e values were also calculated: Q = 0.88 and e = 0.67.