| 配方类型： |
EMULSIONS AND OTHER COLLOIDS |
| 配方说明： |
Resinous Alcohol-8 Emulsion |
| 配制方法： |
To make stable emulsions of resinous alcohol-8 in water, it is necessary to use both an emulsifying agent and an emulsion stabilizer.
Some combinations of these agents are much more effective than others.
The combination of 1% sodium oleate and 1% "Methocel" (100 cp.) is probably the best for making these emulsions. Replacement of the "methocel" with 5% of "Elvacet" 80-900 (polyvinyl acetate emulsion) gives an emulsion of resinous alcohol that is more fluid than that made with "Methocel." All of the emulsions are of the oil-in-water type.
A solution of emulsifying agent and emulsion stabilizer in 65 parts of water is prepared and the resinous alcohol-8 (preheated at 90 to 100'C.) is added, with efficient stirring. Stirring is continued for a few minutes and the emulsion is then allowed to cool to room temperature.
When morpholine oleate and sodium oleate are used as emulsifying agents, the required amount of oleic acid is mixed with the resinous alcohol and the correct amounts of morpholin |
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