Fused ring monomers providing for chemically recyclable polymers
AssigneeThe University of Akron
InventorsJunpeng Wang, Devavrat Sathe
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Abstract
A monomer capable forming a polymer through ring-opening metathesis polymerization and capable of depolymerization thereafter through ring-closing metathesis, wherein the monomer comprises a cycloalkene having a fused ring attached thereto which decreases the ring strain energy to 5.3 kcal/mol or lower as compared to the same cycloalkene without a fused ring having a ring strain energy above 5.3 kcal/mol.
Claims19
A monomer capable of forming a polymer through ring-opening metathesis polymerization and capable of depolymerization thereafter through ring-closing metathesis, the monomer comprising:
- a cycloalkene having a fused ring attached thereto which decreases the ring strain energy to 5.3 kcal/mol or lower as compared to the same cycloalkene without a fused ring having a ring strain energy above 5.3 kcal/mol.
A monomer forming a polymer through ring-opening metathesis polymerization and capable of depolymerization thereafter through ring-closing metathesis, the monomer comprising:
- a cycloalkene having a fused ring attached thereto wherein the attachment of the fused ring results in a change of less than 1° of an average difference in dihedral angles from a corresponding acyclic diene of the cycloalkene having a fused ring attached thereto, as measured at the attachment of the fused ring.
A method of synthesizing a monomer capable of forming a polymer through ring-opening metathesis polymerization and capable of depolymerization thereafter through ring-closing metathesis, the method comprising:
- i. providing a cyclic diene;
- ii. performing a photochemical 2+2 cycloaddition with an olefin to the cyclic diene.
Dependencies are inferred from the claim text.