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US4643362A Grinding aids for hydraulic cement 失效
水硬水泥研磨助剂

Grinding aids for hydraulic cement
摘要:
Hydraulic cements such as Portland cement are interground with diesters formed by reacting a polyol (e.g. alkylene glycol) with a monobasic carboxylic acid (e.g. acetic acid) to enhance the efficiency of the grinding operation.
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