Biobased Polyols for Industrial Polymers
The replacement of polyols synthesized from petrochemical by polyols originating from natural products, notably from vegetable oils and animal fats, has been the subject of research projects for a number of decades.
Very recently, however, the polymers industry has intensified its efforts to include the “green products”, such as biobased polyols, in applications already available in the market. Examples of such applications include polyurethane foams, elastomers and epoxides.
This book describes the extraction of the natural constituents of several fruits and plants as well as their chemical conversion to polyols. In addition to the chemistry involved in the process, particular emphasis is attributed to their applications.
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added addition agent alkyd applications assigned bean biobased Canola carbon castor oil catalyst cells chemical coatings components composition compounds consists containing continuous corn crosslinked diol double bonds epoxidized epoxidized soybean oil ester ethanol ethylene example extraction fats fatty acids fermentation flask flexible foams formulation fruit functionality glucose glycerol glycol groups heated hydrogen hydrolysis hydrolyzed hydroxyl industrial initiator isocyanate linoleic manufacture material method mg KOH/g mixed mixture molecular weight obtained oil-based polyols oligomerized organic oxide palm oil plant polyester polyol polyether polymer polyurethane prepared presence pressure procedure properties propylene oxide rapeseed reaction reactor removed resins resulting rigid seed separated shown in Figure shown in Table solution solvent sources soybean oil starch step stirred structure sucrose sugar sunflower synthesis temperature triglycerides United States Patent unsaturated vegetable oil viscosity yield