Abstract
A new family of elastoplastics based on polyether/polyester polymer backbones is described in this paper. The new family of materials makes possible expanded engineering usage of urethanes. As engineering elastoplastics, these new polymers can be molded, extruded, or handled in any conventional thermoplastic processing mode, yet give the outstanding abrasion resistance, oil and solvent resistance, high and low temperature properties, and dynamic mechanical properties associated with thermosetting elastoplastics.
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