Bio-based non-isocyanate poly(urethane-amide) thermoplastic polymers
AssigneeClemson University Research Foundation
InventorsSRIKANTH PILLA, JAMES SCOTT STERNBERG
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Abstract
Disclosed are bio-based poly(urethane amide) polymers and methods for forming the polymers. The bio-based polymers can be synthesized through a ring opening reaction between bio-based cyclocarbonated polymers that include aromatic and/or cyclic functionality within the polymer and oligomeric polyamides. The cyclocarbonated polymers can be based on bio-based polyols, e.g., lignin or lignin-based polyols, and/or other aromatic or cyclic bio-based polyols. The oligomeric polyamides can be formed by reaction of one or more diamines, which can include bio-based diamines, and one or more dicarboxylic acids, which can include bio-based dicarboxylic acids.
Claims20
A bio-based non-isocyanate poly(urethane amide) comprising the reaction product of a cyclocarbonated polymer and an amine-terminated oligomeric polyamide, wherein a segment of the poly(urethane amide) derived from the cyclocarbonated polymer includes aromatic and/or cyclic functionality, the poly(urethane amide) polymer having a bio-based carbon content of about 90% or greater as determined by radiocarbon dating according to ASTM D6866-20, the poly(urethane amide) polymer being free of isocyanate reaction products.
A method for forming a bio-based non-isocyanate poly(urethane amide) comprising reacting an amine-terminated oligomeric polyamide with a bio-based cyclocarbonated polymer that includes aromatic or cyclic functionality within the polymer.
Dependencies are inferred from the claim text.