发明授权
- 专利标题： Process for dyeing leather with mixtures of dyes
- 专利标题（中）： 用染料混合染色皮革的方法
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申请号： US360025申请日： 1982-03-19
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公开(公告)号： US4452602A公开(公告)日： 1984-06-05
- 发明人: Alois Puntener , Josef Koller , Fabio Beffa
- 申请人： Alois Puntener , Josef Koller , Fabio Beffa
- 专利权人： CIBA-GEIGY Corp 444 SAW MILL RIVER ROAD ARDSLEY NY 10502 A NY CORP,Ciba-Geigy Corp
- 当前专利权人： CIBA-GEIGY Corp 444 SAW MILL RIVER ROAD ARDSLEY NY 10502 A NY CORP,Ciba-Geigy Corp
- 优先权： CHX1953/81 19810323; CHX8158/81 19811221
- 主分类号： C09B45/00
- IPC分类号： C09B45/00 ; C09B55/00 ; D06P3/30 ; D06P3/32 ; D06P1/10
摘要：
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.