Castor Oil Based Prepolymers and Thermoplastic Urethane Polymers
Title:
Castor Oil Based Prepolymers and Thermoplastic Urethane Polymers
Author:
Jadhav, J. Y.
Appeared in:
International journal of polymeric materials
Paging:
Volume 11 (1986) nr. 3 pages 151-158
Year:
1986-11-01
Contents:
Castor oil has been treated with 0.7 mole equivalent of phenyl isocyanate to obtain approximately bifunctional hydroxy adduct. This adduct was further reacted with commercial diisocyanates such as 2,4-toluene diisocyanate (TDI), 4,4'-diphenyl methane diisocyanate (MDI), 1,6-hexamethylene diisocyanate (HDI), and isophorone diisocyanate (IPDI) to prepare isocyanate capped prepolymers. These prepolymers were characterized by Brookfield viscosity and isocyanate content and were extended through aliphatic glycols like 1,2-ethylene glycol, 1,2-propylene glycol, and 1,4-butylene glycol in dimethyl formamide to offer thermoplastic polyurethanes. These polymers were characterized by softening point, solubility and by inherent viscosity.
Journal description