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PHOSPHONIC ACID CATALYST IN DEHYDRATIVE CYCLIZATION OF 5 AND 6 CARBON POLYOLS WITH IMPROVED COLOR AND PRODUCT ACCOUNTABILITY.
PHOSPHONIC ACID CATALYST IN DEHYDRATIVE CYCLIZATION OF 5 AND 6 CARBON POLYOLS WITH IMPROVED COLOR AND PRODUCT ACCOUNTABILITY.
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机译:磷酸在5和6碳纤维的加氢循环中的作用,提高了颜色和产品的可靠性。
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摘要
A process for preparing materials derived from sugar alcohols such that the dehydration products exhibit better accountability and improved color to water-clear or near water-white appearance is described. In particular, the process involves employing a reducing Brnsted acid (e.g., phosphonic acid) for the catalysis of sugar alcohols to their corresponding dehydrated-cyclized products.
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