Anthraquinone dyes
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jan 9, 2007
Grant Date -
Aug 18, 2005
app pub date -
Mar 13, 2003
filing date -
Mar 22, 2002
priority date (Note) -
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Abstract
The present invention relates to a compound of formula I ##STR00001## wherein R.sub.1 and R.sub.3 are each independently of the other --NHR.sub.5, NHSO.sub.2R.sub.5, --NHCOR.sub.5, --OR.sub.6 or --SR.sub.7, R.sub.2 and R.sub.4 are each independently of the other --OR.sub.6 or --SR.sub.7, with the proviso that not all of the substituents R.sub.1 to R.sub.4 are --SR.sub.7, R.sub.5 is hydrogen, alkyl, aryl, aralkyl or a group of formula --(C.sub.nH.sub.2nX).sub.m--H wherein X is --O--, --S--, --SO.sub.2--, --NH--, --NR.sub.8--, --CONH-- or --CONR.sub.8-- and R.sub.8 is alkyl or aryl, n is a number from 2 to 6 and m is a number from 1 to 10, R.sub.6 is aryl or heteroaryl and R.sub.7 is alkyl, aryl, heteroaryl or a group of formula --(C.sub.nH.sub.2nX).sub.m--H wherein X is --O--, --S--, --SO.sub.2--, --NH--, --NR.sub.8--, CONH-- or --CONR.sub.8-- and R.sub.8 is alkyl or aryl, to a process for the preparation thereof and to the use thereof in a method of producing mass-coloured plastics or polymeric colour particles.
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