| abstract |
Segmented thermoplastic elastomers are disclosed which may be polyurethanes, polyureas or polyurethane-ureas comprising soft segments and hard segments, wherein the soft segments are made from polyolefin diols or polyolefin diamines which may have from 0 to 1000 carbon atoms in the backbone, wherein each carbon atom in the backbone may have from 0 to 2 side chains and each side chain may have from 0 to 30 carbon atoms, the hard segments are made from diisocyanates and chain extenders, the hard segments comprise 10-60% of the elastomer and the soft segments comprise the remainder, the number average molecular weight of the elastomer is 5 x 10 3 ‑1000×10 3 G/mol; the ultimate elongation of the elastomer is 100-1000%; young's modulus is 1-3,000 MPa; and the ultimate tensile strength is 10-100 MPa. Also disclosed are methods for preparing the segmented thermoplastic elastomers and uses of the segmented thermoplastic elastomers. |