Heat-resistant plastic tube
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United States of America Patent
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May 6, 2008
Grant Date -
Aug 5, 2004
app pub date -
Jan 20, 2004
filing date -
Jul 19, 2001
priority date (Note) -
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Abstract
A heat-resistant plastic tube is mainly made of a polyester-based elastomer and exhibits a change amount in angle of .+-.10.degree. or less in a shape retainability performance test, a change rate in inner diameter of .+-.2% or less in a dimensional stability performance test, a change rate in yield strength of .+-.30% or less in a flexibility retainability performance test. The heat-resistant plastic tube can be subjected to a thermal bending at a temperature in a use environment or higher and exhibits excellent retention of the bent shape through the thermal bending after being left in the use environment.
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