PROCESS FOR PRODUCTION OF 2,2'-BIS(TRIFLUOROMETHYL)-4,4'-DIAMINOBIPHENYL
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United States of America Patent
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Issued Date -
Feb 11, 2010
app pub date -
Nov 5, 2007
filing date -
Nov 13, 2006
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Abandoned
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Abstract
A method produces 2,2′-bis(trifluoromethyl)-4,4′-diaminobiphenyl, wherein 2,2′-bis(trifluoromethyl)biphenyl is produced from o-chlorobenzotrifluoride, further, 2,2′-bis(trifluoromethyl)biphenyl is dinitrated in 1,2-dichloropropane solution, and 2,2′-bis(trifluoromethyl)-4,4′-dinitrobiphenyl is isolated and reduced. The method for producing of 2,2′-bis(trifluoromethyl)-4,4′-diaminobiphenyl is an industrially excellent method for producing with high safety and high production efficiency.
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