Thermoplastic polyurethane and use thereof
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United States of America Patent
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N/A
Issued Date -
Nov 24, 2005
app pub date -
Mar 7, 2005
filing date -
Jan 27, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Thermoplastic polyurethanes comprise segments A formed of a high molecular weight diol, segments B formed of at least one low molecular weight diol selected from 1,4-bis(hydroxyethoxy)benzene and 1,3-propanediol, and segments C formed of a polyisocyanate. These segments A, B and C are bonded together in a linear form by urethane bonds. The segments B account for 1 to 30 wt. % in the thermoplastic polyurethane. These thermoplastic polyurethanes are characterized in that they have high impact resilience and also in that their impact resilience does not drop much in a low temperature range, in other words, their impact resilience does not vary much depending on changes in outdoor temperature.
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