Patent ID: 8575294
Filing Date: 2013-11-05
Classification: C08G

Abstract:
1. A process of coupling a soy oil based polyol with a petro-chemical polyol to produce a hybrid petro-soybean oil polyol having a high bio-content, a hydroxyl number of between about 50 and about 60 containing a structure having the following formula: the process comprising: a) forming a mixture including a petro-chemical polyol and an isocyanate; b) heating the mixture of step a) for a period of time to form a petro-polyol prepolymer; c) cooling the petro-polyol prepolymer; d) forming a mixture including the cooled petro-polyol prepolymer with a soybean oil based polyol having the structure;  and e) heating the mixture of step d) for a period of time to form a hybrid petro-soybean oil polyol having a high bio-content and a hydroxyl number of between about 50 and 60.