发明名称 |
Azo colorants for ball point pen and ribbon inks |
摘要 |
Reddish-brown to yellow shade colorants suitable for ribbon and ball point inks are produced from the glassy waste by-product of pararosaniline manufacture by slurrying the residue in mineral acid, diazotizing, and coupling. the resulting colorants are useful in preparing inks.
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申请公布号 |
US4952677(A) |
申请公布日期 |
1990.08.28 |
申请号 |
US19880244979 |
申请日期 |
1988.09.15 |
申请人 |
BASF CORPORATION |
发明人 |
SPENCE, FLOYD G.;DE ALVARE, LOUIS R.;ALLEN, ROBERT J. |
分类号 |
C09D11/18 |
主分类号 |
C09D11/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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