Invention Grant
- Patent Title: Process for dyeing leather with mixtures of dyes
- Patent Title (中): 用染料混合染色皮革的方法
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Application No.: US360025Application Date: 1982-03-19
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Publication No.: US4452602APublication Date: 1984-06-05
- Inventor: Alois Puntener , Josef Koller , Fabio Beffa
- Applicant: Alois Puntener , Josef Koller , Fabio Beffa
- Assignee: CIBA-GEIGY Corp 444 SAW MILL RIVER ROAD ARDSLEY NY 10502 A NY CORP,Ciba-Geigy Corp
- Current Assignee: CIBA-GEIGY Corp 444 SAW MILL RIVER ROAD ARDSLEY NY 10502 A NY CORP,Ciba-Geigy Corp
- Priority: CHX1953/81 19810323; CHX8158/81 19811221
- Main IPC: C09B45/00
- IPC: C09B45/00 ; C09B55/00 ; D06P3/30 ; D06P3/32 ; D06P1/10
Abstract:
A mixture of at least three selected 1:2 chromium or 1:2 cobalt complex dyes of different colors and belonging to the azo or azomethine series is used for dyeing leather and furs. The mixtures of dyes make it possible for the first time to dye leather by the trichromatic process.
Public/Granted literature
- US5003341A Optical instrument operable in a light room, for reproducing an original with a variable magnification Public/Granted day:1991-03-26
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