Biodegradable bio-based polyurethanes
AssigneesThe Regents of the University of California, Algenesis Corporation
InventorsAaron M. Bruckbauer, Gordon Bailey Scofield, Marco Nicholas Allemann, Ryan Matthew Simkovsky, Stephen Patrick Mayfield, Michael Burkart
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Abstract
Disclosed herein are biodegradable polyurethanes comprising subunits from an aliphatic diisocyanate, an aliphatic chain extender, and a polyester-polyol, wherein the polyester-polyol comprises subunits from 2,5-furandicarboxylic acid and/or linear aliphatic diacid(s).
Claims20
A polyurethane comprising subunits from a linear aliphatic diisocyanate, a linear aliphatic chain extender, and a polyester-polyol.
A method to prepare a polyurethane, the method comprising:
- contacting one or more dicarboxylic acids with at least 3 carbons, and one or more C2-C10 diols in a first polymerization reaction to obtain a polyester-polyol;
- and
- contacting the polyester-polyol with a linear aliphatic chain extender and a linear aliphatic diisocyanate in a second polymerization reaction to obtain the polyurethane.
A composition comprising:
- a polyurethane, wherein the polyurethane comprises subunits from:
- a linear aliphatic diisocyanate, a linear aliphatic chain extender, and a polyester-polyol,
- wherein when subjected to physical or chemical processes, the polyurethane produces fewer persistent microplastics as compared to a comparator polyurethane having:
- (a) a diisocyanate subunit;
- and
- (b) at least one property that is about the same as a property of the polyurethane, wherein the property comprises a strain-based, thermal, or physical property.
Dependencies are inferred from the claim text.