Polyurethane Foam Containing Vegetable Oil Polyols
US Patent #0270747 A1
Publication Date November 30, 2006
The polyurethane foam described below is made from a formulation comprised of a polyol blend of petrochemical polyols from BASF, diisocyanatodiphenyl
methane (MDI), surfactant and a polyol blend comprising a vegetable oil polyol (castor oil, soybean oil, etc.) and catalyst.
Formulation #1
61 g Lupranate 816 polyol was charged into a disposable vessel along with 20 g Castor Oil, 10 g Diethylene Glycol and 9 g Agrol A-56 (soybean oil).
The mixture was agitated using a mechanical stirrer for 15 seconds to ensure temperature stayed below 75F. 1.5 g Surfactant 5614 silicone, 160 g
CaCO3, 1 g water and Niax amine catalyst A-518 were then added to the disposable reaction vessel and mixed.
The hydroxyl value was calculated as 161.88 OH #, with 1% water. Per patent calculation OH# (.155) + WATER%(9.67) X 1.7709 the amount of isocyanate
needed for the reaction came to be 63.47 g MDI (223).
The reaction mixture was flooded with 63.47 g of 223 isocyanate and mixed for 30 seconds and poured into a Teflon paper and put into an oven for 4
minutes at 275F. The resulting foam below has great resiliency, and memory like characteristic.
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