Bleaching and dyeing; fluid treatment and chemical modification – Dyeing process utilizing electric – magnetic – or wave energy;...
Patent
1995-08-01
1996-09-10
Lieberman, Paul
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing process utilizing electric, magnetic, or wave energy;...
8506, 8552, 8571, 8574, 8593, 8605, 8616, 8649, 8670, 811552, 811553, 8920, D06P 102, D06P 300, D06P 520
Patent
active
055541968
ABSTRACT:
Method of marking a surface of an object by means of a laser light beam.
A description is given of a method of decorating or marking, for example, synthetic resin objects by means of an UV-laser or IR-laser by coating the object with a layer of a dye precursor and a coupler in a binder. For the precursor use is made of a heterocyclic mono- or bis-arylsulphonylhydrazone and for the coupler use is made of, for example, an indole, aniline, pyrazoline or malonitrile, so that after irradiation with UV-laser light or IR-laser light an azo-dye (XXX) is formed.
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patent: 3149990 (1964-09-01), Coles et al.
patent: 4207111 (1980-06-01), Fujiwhara et al.
patent: 4430420 (1984-02-01), Adin
patent: 4433037 (1984-02-01), DoMinh
patent: 4742042 (1988-05-01), Hiraishi et al.
Justus Liebigs Annalen Der Chemie, "Quartare Heterocylische Azosulfone", Hunig et al., 1966, pp. 116-139. No Month Available.
Bartlett Ernestine C.
Dusheck Caroline L.
Lieberman Paul
U.S. Philips Corporation
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