| Autor: |
Meguro, Kenjiro, Ochi, Miyoko, Matsushita, Noritaka |
| Zdroj: |
Bulletin of the Chemical Society of Japan; November 1967, Vol. 40 Issue: 11 p2675-2681, 7p |
| Abstrakt: |
Surface-active polyethenoxy silicic esters were prepared by the reaction of tetraethyl silicate with various polyethenoxy higher alkyl ethers by the use of tetrabutyl titanate as a catalyst. Their properties as surfactant were compared with those of conventional nonionic surfactants. These compounds are soluble in many kinds of organic solvents, and have good dispersing power on such inorganic pigments as titanium oxide in organic media. The dispersing characteristics of these compounds in the inorganic pigments were tested in benzene, carbon tetrachloride, and monochlorobenzene by measuring the sedimentation volume. It was found that the compounds containing a chain of more than six ethenoxy groups were soluble in water. The surface tension of these water-soluble polyethenoxy silicic esters were determined in various concentration regions. In this paper, the preparation and properties of these compounds will be described. |
| Databáze: |
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| Externí odkaz: |
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