Precision polyurethane manufacture
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 22, 2014
Grant Date -
Mar 11, 2004
app pub date -
Jul 30, 2001
filing date -
Aug 3, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A process for making a polyurethane, comprising reacting a multifunctional isocyanate, a polyol and, optionally, a chain extender, wherein at least two reagents selected from the isocyanate, the polyol, the chain extender, any mixture thereof and any pre-polymer formed therefrom, are intensively mixed prior to being reactively extruded, to form a polyurethane having a predetermined stoichiometry and thermal history. The polyurethanes obtained by such a process are of highly consistent composition and are, thus, especially suitable for use in the medical device industry.
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