| 摘要 |
The present invention is directed to poly(vinyl butyral) dispersions that incorporate a hydrogenated, ethoxylated castor oil as a non-ionic surfactant. Incorporation of the hydrogenated, ethoxylated castor oils of the present invention result in poly(vinyl butyral) dispersions that can be formed using conventional methods. Non-ionic, hydrogenated, ethoxylated castor oils, according to the present invention, can be post-added after formation of an anionic dispersion as a co-surfactant to extend pH stability of a poly(vinyl butyral) dispersion containing a conventional anionic alkali-metal soap, such as sodium or potassium oleate, from the alkaline to the neutral pH range.
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