Method for brightening the colour of polyol esters
Lightening color of polyol ester, comprises: reacting polyol with linear or branched aliphatic monocarboxylic acid having 3-20 carbon atoms; subsequently reprocessing the reaction mixture without using adsorbent material; treating the reaction product with peroxide compound, after separating the unr...
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| Format: | Patent |
| Sprache: | eng ; fre ; ger |
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| Zusammenfassung: | Lightening color of polyol ester, comprises: reacting polyol with linear or branched aliphatic monocarboxylic acid having 3-20 carbon atoms; subsequently reprocessing the reaction mixture without using adsorbent material; treating the reaction product with peroxide compound, after separating the unreacted starting compound; carrying out steam treatment immediately and subsequently without further intermediate steps; and drying the remaining polyol ester. |
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