Method for producing silicone step-growth elastomers from dual functional siloxanes
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United States of America Patent
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Sep 29, 2015
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Sep 18, 2014
app pub date -
Mar 7, 2014
filing date -
Mar 14, 2013
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Abstract
A convenient, practical method for forming elastomers from dual functional siloxanes that cure by a step-growth mechanism is provided. The method involves preparing a first mixture containing a first telechelic siloxane and a hydrosilylation catalyst; preparing a second mixture containing a second telechelic siloxane and a dual functional siloxane having two different polymer termini; and reacting the first mixture with the second mixture to produce the siloxane elastomer. The first and second mixtures may be stored separately until time of use.
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