| 摘要 |
<p>Improved magnesite cements comprises a cement selected from magnesium oxychloride and/or magnesium oxysulphate cements together with one or more organic carboxylic acid(s) having a "120h Weight Loss Coefficient" of less than 5 %, and/or their anhydrides and/or their carboxylate salts. Illustrative cements are those that comprise carboxylic acids of the formula: R-(COOH)p, wherein: p = 1 to 5; R = Alkyl (linear or branched; saturated or unsaturated; cyclic or acyclic); or Aryl (substituted or unsubstituted), wherein R contains up to 10 carbon atoms, and one or more of its carbon or hydrogen atoms may be replaced by oxygen, nitrogen, phosphor or sulfur atoms.</p> |
