Both HCFC-and pentane-blown rigid polyurethane foams have been prepared from polyols derived from soybean oil. The effect of formulation variables on foam properties was studied by altering the types and amounts of catalyst, surfactant, water, crosslinker, blowing agent, and isocyanate, respectively
Rigid polyurethane foam based on modified vegetable oil
✍ Scribed by Vinícius B. Veronese; Rodrigo K. Menger; Maria Madalena de C. Forte; Cesar L. Petzhold
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 586 KB
- Volume
- 120
- Category
- Article
- ISSN
- 0021-8995
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## Abstract Fifty vegetable oil‐based polyols were characterized in terms of their hydroxyl number and their potential of replacing up to 50% of the petroleum‐based polyol in waterborne rigid polyurethane foam applications was evaluated. Polyurethane foams were prepared by reacting isocyanates with
The reactions between polymeric diphenyl methane diisocyanate (polymeric MDI) and conventional polyols to produce foamed polyurethane products are well documented and published. Current polyurethane foams are predominantly produced from these reactions whereby the polyol components are usually obtai