Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2006-04-20
2010-12-21
Le, Hoa V (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C106S031770, C106S496000, C252S582000
Reexamination Certificate
active
07855041
ABSTRACT:
The invention relates to a pigment preparation which contains the monoazo pigment of the formula (I)and 0.1% to 40%, preferably 0.5% to 25%, in particular 1.0% to 17.5% of a pigment dispersant, in relation to the weight of the monoazo pigment of the formula (I), which is composed of disazo compounds at least 30% of the diazo compounds forming an asymmetric disazo compound of the formula (II)in-line-formulae description="In-line Formulae" end="lead"?Y-X-A-X-Z (II),in-line-formulae description="In-line Formulae" end="tail"?in whichA is biphenylene, 3,3′-dichlorobiphenylene, 3,3′-dimethoxybiphenylene, 3,3′-dimethylbiphenylene or 2,2′-dichloro-3,3′-dimethoxybiphenylene;X is a group —NH—CO—CH(COCH3)—N═N—, —N═N—CH(COCH3)—CO—NH—or —N═N—;Y is substituted or unsubstituted phenyl, pyrazolin-5-on-4-yl, 1-phenyl-Pyrazolin -5-on-4-Lyl, 2-hydroxynaphth-1-yl or 2-hydroxy-3-(phenylamino-carbonyl) naphth-1-yl, the substituents being C1-C4alkyl, C1-C4alkoxy, nitro, halogen or C1-C4alkoxycarbonyl, and have the meaning of Y, and the compounds being further substituted with a sulfonic acid group present as an ammonium salt. Y stands for substituted or unsubstituted phenyl, pyrazolin-5-on-4-yl, 1-phenyl-pyrazolin-5-on-4-yl, 2-hydroxynaphth-1-yl or 2-hydroxy-3-(phenylaminocarbonyl)naphth-1-yl, the substituents being C1-C4-alkyl, C1-C4-alkoxy, nitro, halogen or C1-C4-alkoxycarbonyl and having the meaning of Y, and the compounds being further substituted with a sulphonic acid group present as an ammonium salt.
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Co-pending U.S. Appl. No. 11/919,661, filed Oct. 30, 2007 by Weber et al.
PCT International Search Report for PCT/EP2006/003626, mailed Nov. 14, 2006.
English Transaction of PCT IPER for PCT/EP2006/003626, mailed Dec. 13, 2007.
Alfter Frank
Hoetzel Patrick
Schweikart Karl-Heinz
Weber Joachim
Bisulca Anthony A.
Clariant Produkte ( Deutschland) GmbH
Le Hoa V
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