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US 8,575,294 B2Granted
High bio content hybrid natural oil polyols and methods therefor
OwnerThomas M. Garrett, Xian Xian Duinventors
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Abstract
Methods of producing a hybrid petro-plant oil polyol having a high bio-content by coupling a petro-chemical polyol with a plant oil based polyol is provided, including coupling an intermediate petro-polyol prepolymer with a plant oil polyol so as to synthesize a hybrid petro-plant oil polyol having a high bio-content and a hydroxyl number of between about 50 and 60.
Claims24
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.
4 more elements
Dependencies are inferred from the claim text.