发明名称 |
WERKWIJZE TER BEREIDING VAN ZUIVER SYNTHETISCH KRISTALLIJN BETA-WOLLASTONIET, ALSMEDE WERKWIJZE VOOR HET VULLEN RESPECTIEVELIJK PIGMENTEREN VAN KUNSTSTOFFEN EN VERFSAMENSTELLINGEN. |
摘要 |
<p>Substantially pure, synthetic crystalline alpha -wollastonite having a specified BET surface of 1-30 m2/g made by first producing calcium silicate hydrates having a molar ratio of SiO2:CaO = about 0.7 to about 1.3 by hydrothermal treatment of an aqueous mixture of a source of CaO and SiO2 and then annealing the calcium silicate hydrates at about 800 DEG C to about 1150 DEG C to convert them to the alpha -wollastonite. The invention also encompasses the use of the calcium silicate hydrates and the alpha -wollastonite in the manufacture of ceramic materials and glazings.</p> |
申请公布号 |
NL172642(C) |
申请公布日期 |
1983.10.03 |
申请号 |
NL19700003346 |
申请日期 |
1970.03.09 |
申请人 |
INTONG AKTIEBOLAG TE KUMLA, ZWEDEN. |
发明人 |
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分类号 |
C04B35/22;C08K3/34;C09C1/28;D21H17/68;(IPC1-7):01B33/24;09C1/28 |
主分类号 |
C04B35/22 |
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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