soybean oil derived polyol is defined as
soyol. It is mainly composed of triglyceride molecules derived
from unsaturated fatty acids such as linoleic acid (50%), oleic
acid (25%), and linolenic acid (7%) and its number of unsaturations
is higher than other vegetable oils (Ionescu, 2005). Soyol
is used as a natural renewable feedstock for PU industry due to
its characteristics of reducing greenhouse gas emissions, easy disposal
and handling with a virtually inexhaustible raw material
(Allen, 2009). Therefore it is very important to develop biorenewable
feedstock for industry now from an economic (Omni
Tech International, 2010) and environmental point of view