| 摘要 |
<p>Calcium cpds. which are water repellent are formed by reacting a Ca cpd. which decomposes to Ca(OH)2 simultaneously with H2O and >=1 water soluble salt of a carboxylic acid and/or >=1 carboxylic ester. If an organo-silicon cpd. is used it is =94 wt.% of the total wt. of organo-silicon cpd., carboxylic salt and carboxylic ester. Emulsifiers, protective colloids and/or stabilisers for plastics may also be added to the mixt. Cpds. produced according to this method can be used as additives to plastics e.g. PVC or as additives for inorganic binders such as lime mortars, Portland ement decorative coatings and water glass colours. The binders can also contain the usual additives such as sand, vermiculite, perlite, wood meal, wood wool, gravel, asbestos, agents to inhibit binding, gluconic acid, Ca gluconate, organic resins, e.g. vinyl polymers and pigments.</p> |
