Water-soluble and biodegradable copolymers on a polyamide basis and use thereof
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United States of America Patent
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Feb 28, 2012
Grant Date -
Sep 23, 2010
app pub date -
Aug 9, 2007
filing date -
Aug 18, 2006
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Abstract
Copolymers based on a polyamide containing at least one graft lateral chain consisting of ethylenic unsaturated compounds, in construction chemistry, as well as with the prospecting, exploiting and completion of oil-and gas deposits and with deep bore holes.
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