Additive for improving hydraulic cement compositions专利检索-水泥添加剂建筑材料专利检索查询-专利查询网

Additive for improving hydraulic cement compositions

阅读：191发布：2023-04-17

专利汇可以提供Additive for improving hydraulic cement compositions专利检索，专利查询，专利分析的服务。并且An additive for imparting water repellancy to, and retarding the set of hydraulic cement compositions (e.g., Portland cement compositions such as masonry cements) is described which is an aqueous oil-in-water emulsion containing water, a waterinsoluble, water-repelling acid component (e.g. tall oil), an emulsifier (e.g. a salt of such acid), and a setting timeretarding agent (e.g. sucrose). The additive is ideally dispersible in water and preferably contains an air-entraining agent as an additional optional component. Intergrinding the emulsified additive with the cement component is the preferred manner of incorporating the additive in the cement composition.，下面是Additive for improving hydraulic cement compositions专利的具体信息内容。

权利要求

1. AN ADDITIVE FOR HYDRAULIC CEMENT COMPOSITIONS WHICH ADDITIVE IS READILY DISPERSIBLE IN WATER AND COMPRISES AN OIL-INWATER EMULSION IN WHICH THE SOLIDS PORTION IS COMPRISED OF A MAJOR PROPORTION OF A WATER-INSOLUBLE, WATER-REPELLING ACID COMPONENT SELECTED FROM THE GROUP CONSISTING OF FATTY ACIDS, ROSIN ACIDS AND MIXTURES THEREOF, FROM ABOUT 3 TO ABOUT 30 PERCENT BY WEIGHT OF A SET-RETARDING COMPONENT FOR SAID HYDRAULIC CEMENT, AND AT LEAST ABOUT 0.5 PERCENT BY WEIGHT OF AN EMULSIFIER FORMED BY REACTING SAID ACID COMPONENT WITH A BASE CAPABLE OF FORMING A SALT THEREOF, WHICH SALT WILL MAINTAIN A STABLE EMULSION.

2. The additive of claim 1 wherein said retarding component is a retarder of the setting time of Portland cement.

3. The additive of claim 1 wherein said acid component is derived from tall oil.

4. The additive of claim 1 containing as an additional component other than the components recited, an air-entraining agent for said cement composition.

5. An additive for Portland cement compositions, which additive is readily dispersible in water and comprises an oil-in-water emulsion containing at least about 25 percent by weight of water and a solids portion comprised of a major proportion of a water-insoluble, water-repelling acid component selected from the group consisting of fatty acids, rosin acids and mixtures thereof, from about 3 to about 30 percent by weight of solids of a water-soluble, set-retarding component for said cement, and at least about 0.5 percent by weight of an emulsifier formed by reacting said acid component with a base capable of forming a salt thereof, which salt will maintain a stable emulsion.

6. The additive of claim 5 wherein said salt is an alkali metal salt.

7. The additive of claim 5 wherein said set-retarding agent is a carbohydrate.

8. An additive for Portland cement compositions, which additive is readily dispersible in water and comprises an oil-in-water emulsion containing at least about 25 percent by weight of water and a solids portion containing from about 60 to about 95 percent by weight of tall oil acid, from about 3 to about 35 percent by weight of a retarder of the setting time of said cement, at least about 0.5 percent by weight of a salt of said acid as an emulsifier, and from about 1 to about 5 percent by weight of an air-entraining agent for said cement composition.

9. The additive of claim 8 wherein said air-entraining agent is a condensation product of ethylene oxide.

10. The additive of claim 8 wherein said retarder is a carbohydrate and said emulsifier is formed by reacting said acid with sodium hydroxide.

说明书全文

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