Patent ID: 11905362
Assignee: ORIGIN MATERIALS OPERATING, INC.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A polymer composition having reduced color content, comprising:
a polymer with a polymer backbone, wherein the polymer backbone comprises one of a substituted or unsubstituted f urandicarboxylate moiety and a substituted or unsubstituted tetrahydrof urandicarboxylate moiety, and
an organocatalyst comprising carbene, or a fragment of the organocatalyst thereof,
wherein the composition is free from metal catalysts or metal catalyst fragments, wherein the metal catalysts are at least one of a transesterification catalyst, a polycondensation catalyst, or polymerization catalysts used to produce the polymer or precursors thereof, and
wherein the polymer composition having a reduced color content has a number average molecular weight of at least 10,000 Da, and
wherein a solution of 5 mg/mL of the composition in (i) hexafluoroisopropanol or (ii) hexafluoroisopropanol/dichloromethane has an absorbance of less than 0.5 at 400 nm.