发明名称 |
NOVEL CRYSTAL TRANSFORMATION OF PIGMENT RED 53:1 |
摘要 |
A novel crystallographic modification ( beta -modification) of the pigment C. I. Pigment Red 53:1 is described and claimed which has characteristic reflection values in its X-ray diffraction pattern obtained by means of Cu-K alpha radiation. This novel pigment form is obtained by reacting an aqueous solution of an alkali metal or ammonium salt of the formula 1 <IMAGE> (1) with the equivalent amount of a water-soluble barium salt in the presence of a compound of the formula 2 <IMAGE> (2) The modification is distinguished by a more yellowish-red shade as compared to the known alpha -modification. |
申请公布号 |
JPS598759(A) |
申请公布日期 |
1984.01.18 |
申请号 |
JP19830113016 |
申请日期 |
1983.06.24 |
申请人 |
HOECHST AG |
发明人 |
FURANTSU SHIYUUI;RAINHORUTO DOIBERU;NORUBERUTO UESUTERU |
分类号 |
C09B29/15;C09B63/00;C09B67/00;C09B67/20;C09B67/26;C09B67/48;C09D7/12;C09D11/02 |
主分类号 |
C09B29/15 |
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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