Invention Grant
- Patent Title: Disazo dyes, and copper complexes thereof, for dyeing paper
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Application No.: US10451835Application Date: 2001-12-19
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Publication No.: US07078497B2Publication Date: 2006-07-18
- Inventor: Adolf Käser , Holger Lautenbach
- Applicant: Adolf Käser , Holger Lautenbach
- Applicant Address: US NY Tarrytown
- Assignee: Ciba Specialty Chemicals Corporation
- Current Assignee: Ciba Specialty Chemicals Corporation
- Current Assignee Address: US NY Tarrytown
- Agent Kevin T. Mansfield
- Priority: EP008112567 20001228
- International Application: PCT/EP01/15009 WO 20011219
- International Announcement: WO02/053649 WO 20020711
- Main IPC: C09B35/29
- IPC: C09B35/29 ; C09B35/35 ; D21H21/28 ; C09B45/28
Abstract:
The dyes of formula (1) according to claim 1 and the copper complexes of dyes of formula (2) according to claim 9 or the mixtures of mono-copper complex with the bis-copper complex are excellently suitable for dyeing paper with good light-fastness properties.
Public/Granted literature
- US20040063920A1 Disazo dyes, and copper complexes thereof, for dyeing paper Public/Granted day:2004-04-01
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