Synthesis of new polyureas derived from 4‐cyclohexylurazole | Zendy

Mallakpour Shadpour E. | Zendy; Rostamizadeh Hossein | Zendy

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Synthesis of new polyureas derived from 4‐cyclohexylurazole

Author(s) -

Mallakpour Shadpour E.,

Rostamizadeh Hossein

Publication year - 2001

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.1221

Subject(s) - isophorone diisocyanate , hexamethylene diisocyanate , isocyanate , condensation polymer , polymer chemistry , polyurethane , pyridine , polymer , chemistry , materials science , chloroform , toluene diisocyanate , organic chemistry

4‐Cyclohexylurazole (1) R = cyclohexyl (CHU) was prepared from cyclohexyl isocyanate in two steps. Polycondensation reactions of compound CHU with hexamethylene diisocyanate (HMDI), isophorone diisocyanate (IPDI), and toluene‐2,4‐diisocyanate (TDI) were performed in DMAc/chloroform and DMAC in the presence of pyridine as a catalyst. The resulting novel polyureas have an inherent viscosity in the range of 0.044–0.206 g/dL in DMF at 25°C. These polyureas were characterized by IR, 1 H–NMR, elemental analysis, and TGA. The resulting polymers are soluble in most organic solvents. Some physical properties and structural characterization of these novel polyureas are reported. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 1335–1341, 2001

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