| 摘要 |
An aliphatic thermoplastic polyurethane resin composition is provided to improve transparency, elastic recovery, injection molding property and yellowing resistance. An aliphatic thermoplastic polyurethane resin composition comprises 10-86 wt% of a polyol having a number average molecular weight of 650-6,000; 10-60 wt% of a diisocyanate comprising 1,6-hexamethylene diisocyanate and at least one kind of aliphatic diisocyanate other than 1,6-hexamethylene diisocyanate; and 3-35 wt% of a C1-C20 chain extender, wherein the composition has a flexural deformation of 30% or less and a transparency(ASTM D1033) of 80% or more.
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