Biodegradable polyurethane and method for preparing the same
AssigneesHyundai Motor Company, Kia Corporation, Inha University Research and Business Foundation
InventorsKwon Yong Choi, Hee Joong Kim, Seon Min Jin, Hye In Kim
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Abstract
Provided is a method for preparing biodegradable polyurethane, which includes preparing a first polyol having a linear structure by polymerizing a first cyclic monomer containing a heteroatom, in presence of a bifunctional initiator, preparing a second polyol containing a cyclic structure by polymerizing a second cyclic monomer containing a heteroatom, in presence of a chain transfer agent, and allowing the first polyol having the linear structure, the second polyol containing the cyclic structure, and an isocyanate-based compound to react with each other.
Claims20
A method for preparing biodegradable polyurethane, the method comprising:
- preparing a first polyol having a linear structure by polymerizing a first cyclic monomer containing a heteroatom, in presence of a bifunctional initiator;
- preparing a second polyol containing a cyclic structure by polymerizing a second cyclic monomer containing a heteroatom, in presence of a chain transfer agent;
- and
- allowing the first polyol having the linear structure, the second polyol containing the cyclic structure, and an isocyanate-based compound to react with each other.
A biodegradable polyurethane comprising:
- a repeating unit represented by the following Chemical formula 3,
- wherein:
- R1 is a linear alkylene group,
- each of R2 and R4 is an independently substituted or unsubstituted alkylene or alkenylene group,
- R3 is an alkylene group containing a heterocyclic group,
- n is a real number greater than 10 and less than 200, and
- m is a real number greater than 10 and less than 200.
A biodegradable polyurethane comprising:
- at least 75 wt % biomass-derived carbon, based on a total weight of the polyurethane, and
- a repeating unit represented by the following Chemical formula 3,
- wherein:
- R1 is a linear alkylene group,
- each of R2 and R4 is an independently substituted or unsubstituted alkylene or alkenylene group,
- R3 is an alkylene group containing a heterocyclic group,
- n is a real number greater than 10 and less than 200, and
- m is a real number greater than 10 and less than 200.
Dependencies are inferred from the claim text.