| 发明名称 |
Calcium sulphate di:hydrate paper filler prepn. |
| 摘要 |
The filler is made by hydrating CaSO4 in presence of 0.5 wt.% of Al2(SO4)3 and subsequently heating the reaction prod. to around 42 deg.C with saturated steam to complete the reacti`
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| 申请公布号 |
FR2667585(A1) |
申请公布日期 |
1992.04.10 |
| 申请号 |
FR19900014009 |
申请日期 |
1990.11.12 |
| 申请人 |
CARGAS BLANCAS INORGANICAS SA |
发明人 |
PRUJA AGUSTI SILVIA |
| 分类号 |
C01F11/46;D21H17/66 |
主分类号 |
C01F11/46 |
| 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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