Patent number: 6723846
Abstract: The present invention relates to compounds having formula (1): wherein each R1 represents, independently, a linear C1-C4-alkylene residue which is unsubstituted or substituted by hydroxy, C1-C4-alkyl, C1-C4-alkoxy, C1-C4-hydroxy- or alkoxy-alkoxy, —OCOM, —OCOC1-C4-alkyl, or an amino acid residue from which a hydrogen atom on the amino group has been removed; each R2 represents, independently, a linear C1-C4-alkylene residue which is unsubstituted or substituted by hydroxy, C1-C4-alkyl, C1-C4-alkoxy, C1-C4-hydroxy- or alkoxy-alkoxy, —OCOM, —OCOC1-C4-alkyl, —CO2M, CO2C1-C4-alkyl SO3M or phenoxy which is unsubstituted or substituted by halogen, C1-C4-alkyl or C1-C4-alkoxy, —CO2M or CO2C1-C4-alkyl, NH3 or mono- or disubstituted amino; or phenyl which is unsubstituted or substituted by 1 to 3 SO3M, SO2NHC1-C4-alkyl, —SO2NH2, —CO2M, —CO2M, —CO2C1-C4-alkyl, —CONH2, —CONHC1-C4-alkyl, —NHCOC1-C4-alkyl or mono- or disubstituted amino groups;
Type:
Grant
Filed:
March 6, 2002
Date of Patent:
April 20, 2004
Assignee:
Ciba Specialty Chemicals Corporation
Inventors:
Georges Metzger, Serge Hauger, Fabienne Cuesta, Christophe Bulliard, Peter Rohringer, Marc Roger Grienenberger
Patent number: 6645257
Abstract: A process for pigmenting wood, which comprises treating wood in succession:
a) with a solution comprising
from 0.01 to 80% by weight, based on the solution, of a compound of the formula
A(B)x (I),
in which x is an integer from 1 to 8,
A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, indanthrone, isoindolinone, isoindoline, dioxazine, azo, phthalocyanine or diketopyrrolopyrrole series which is attached to x groups B via one or more heteroatoms, these heteroatoms being selected from the group consisting of N, O and S and forming part of the radical A,
B is hydrogen or a group of the formula
at least one group B not being hydrogen and, if x is a number from 2 to 8, the groups B being identical or different, and
L is any desired group suitable for solubilization; and
from 0.05 to 5% by weight, based on the solution, of a salt of the formula
Kat+.An− (II),
Kat+.
Type:
Grant
Filed:
September 15, 2000
Date of Patent:
November 11, 2003
Assignee:
Ciba Specialty Chemicals Corporation
Inventors:
Hans-Thomas Schacht, Gilbert Moegle, Reiner Jahn, Christiane Griessen, Peter Scheibli