Thermoplastic polyurethane compositions comprising nitro-substituted polyester diols
AssigneeBioCellection Inc.
InventorsKatrina Marie Knauer, Jennifer Le Roy, Cody James Higginson, Russell Clayton Pratt, David Samuel Pilsk
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Abstract
This invention relates to the field of polymers. More specifically, the invention comprises thermoplastic polyurethane elastomers comprising polyesters comprising nitro-substituted dicarboxylic acids that are products obtained by decomposition of polyethylene. The thermoplastic polyurethane elastomers described herein exhibit higher glass transition temperatures and higher Shore A hardness compared to thermoplastic polyurethane elastomers synthesized from similar polyester diols made from virgin monomers that do not contain nitro substitution.
Claims28
A thermoplastic polyurethane elastomer composition comprising the reaction product of
- (a) a composition comprising at least one nitro-substituted polyester diol (NO2-PED), and at least one polyester diol that is not substituted by a nitro group, wherein the NO2-PED has the formula:
- wherein n is 0-14, y is 1-100, X═H or NO2, and R is alkylenyl, alkylenyl with one or more CH2 groups substituted by —O—, cycloalkylenyl, or arylenenyl, wherein at least one X is NO2,
- (b) at least one polyisocyanate, and
- (c) at least one chain extender.
Dependencies are inferred from the claim text.