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US 9,751,991 B1Granted
Renewable resins and thermoplastics from eugenol
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorBenjamin G. Harvey
Life of this patent
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Abstract
An eugenol, an abundant natural phenol and the primary component of clove oil, which is converted to a thermoset resin via a high yield, two-step reaction. Modest heating yields a thermoset material with thermal stability above 350° C., a glass transition temperature of 187° C. and water uptake of only 1.8%.
Claims23
A method for manufacturing thermoplastics or resins from a bisphenol, comprising:
- isolating eugenol synthetically or from at least one renewable resource;
- reacting said eugenol with at least one metathesis catalyst to form an unsaturated
- bisphenol;
- converting said unsaturated bisphenol to a thermosetting resin or a thermoplastic polymer;
- or first hydrogenating said unsaturated bisphenol to produce a saturated bisphenol and then converting said saturated bisphenol to a resin or thermoplastic polymer;
- purifying said resins or thermoplastic polymers;
- and
- combining and curing said resins or thermoplastic polymers or resins and thermoplastic polymers with support material to produce composite materials of thermoplastic polymers, resins, or blends of thermoplastic polymers and resins.
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A method for manufacturing thermoplastics or resins from phenol, comprising:
- isolating eugenol synthetically or from at least one renewable resource;
- reacting said eugenol with at least one metathesis catalyst to form an unsaturated bisphenol;
- converting said unsaturated bisphenol to a thermosetting resin or a thermoplastic polymer;
- or first hydrogenating said unsaturated bisphenol to produce a saturated bisphenol and then converting said saturated bisphenol to a thermosetting resin or thermoplastic polymer;
- purifying said resins or thermoplastic polymers;
- and
- combining and curing said resins or thermoplastic polymers or resins and thermoplastic polymers with support material to produce composite materials of thermoplastic polymers, resins, or blends of thermoplastic polymers and resins;
- and
- wherein said composite materials are recycled back to eugenol phenols and bisphenols via a controlled pyrolysis process.
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Dependencies are inferred from the claim text.