Preparation and properties of castor oil-based polyurethanes
✍ Scribed by Zoran S. Petrović; Dragica Fajnik
- Publisher
- John Wiley and Sons
- Year
- 1984
- Tongue
- English
- Weight
- 506 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0021-8995
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## Abstract Polyurethanes based on vegetable oil were synthesized with castor oil and toluene diisocyanate, isophorone diisocyanate or hexamethylene diisocyanate, using dibutyltin dilaurate as a catalyst. The effects of the nature of the diisocyanate on the evolution of the kinetics, as well as the
Cast polyurethanes based on castor oil, Ñuorescein and tolylene diisocyanate have been synthesized. The polyurethanes were characterized by Fourier transform infrared spectroscopy. The thermal stabilities of the polymers were determined using a thermogravimetric analyser. From the di †erential scann
Instrumented impact testing has been used to study castor-oil-based polyurethanes. The energy-absorbed capacity of these materials in impact is dependent on several factors, such as the type of isocyanate, NCO/OH ratio, and testing temperature. An approximate but simple method for the low-temperatur