发明授权
US4198268A Process for producing colored paper using granulated dye compositions
失效
使用造粒染料组合物生产彩色纸的方法
- 专利标题： Process for producing colored paper using granulated dye compositions
- 专利标题（中）： 使用造粒染料组合物生产彩色纸的方法
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申请号： US605971申请日： 1975-08-20
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公开(公告)号： US4198268A公开(公告)日： 1980-04-15
- 发明人: Alfred Frei , Helmut Moser , Georg Schoefberger , August Schweizer
- 申请人： Alfred Frei , Helmut Moser , Georg Schoefberger , August Schweizer
- 申请人地址： CHX Basel
- 专利权人： Sandoz Ltd.
- 当前专利权人： Sandoz Ltd.
- 当前专利权人地址： CHX Basel
- 优先权： CHX13321/67 19670922
- 主分类号： C09B31/02
- IPC分类号： C09B31/02 ; C09B35/02 ; C09B43/14 ; C09B67/00 ; C09B67/24 ; C09B69/00 ; D21H21/28 ; D21H3/80
摘要：
A process for the dyeing of paper with granulated dyeing preparations, preferably dissolved in water. For the process granulated dyeing preparations are used which consist of(a) a dye soluble to at least 2% in water at 25.degree. C. and(b) in an amount not greater than 50%, a salt which dissociates in water, the average size of the granules being at least 20 microns.This application is a continuation of application Ser. No. 239,360, filed Mar. 29, 1972 and now abandoned, which in turn is a continuation-in-part of application Ser. No. 60,115, filed July 31, 1970 and now abandoned, which in turn is a continuation-in-part of application Ser. No. 761,333, filed Sept. 20, 1968 and now abandoned.
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