Castor Oil Based Prepolymers and Thermoplastic Urethane Polymers
Titel:
Castor Oil Based Prepolymers and Thermoplastic Urethane Polymers
Auteur:
Jadhav, J. Y.
Verschenen in:
International journal of polymeric materials
Paginering:
Jaargang 11 (1986) nr. 3 pagina's 151-158
Jaar:
1986-11-01
Inhoud:
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.
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