Cross-linked thermoplastic polyurethane/polyurea and method of making same
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United States of America Patent
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Aug 31, 2010
Grant Date -
Sep 17, 2009
app pub date -
May 26, 2009
filing date -
Nov 18, 2004
priority date (Note) -
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Abstract
A process for forming a cross-linked thermoplastic polymer is disclosed herein. The cross-linked thermoplastic polymer is formed by heating a first mixture containing a thermoplastic urethane base material, a monomeric diisocyanate comprising between 1 to 10% of the total weight of the first mixture, and a second mixture of a first diamine and a second diamine comprising between 1 to 10% of the total weight of a total reaction product. The heated first mixture, which is flowable, is injected into at least one injection molding device, with the second mixture injected at predetermined intervals to create a homogeneous reaction product.
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