发明授权
US5162517A Process for the preparation of epimer-free sugar alcohols from the group
consisting of xylitol, sorbitol (D-glucitol),
4-O-.beta.-D-galactopyranosyl-D-glucitol and
4-O-.alpha.-D-glucopyranosyl-D-sorbitol
失效
由XYLITOL，SORBITOL（D-GLUCITOL），4-O-（BETA）-D-葡萄糖醛酸-D-GLUCITOL和4-O-（ALPHA）-D-葡萄糖苷组合的组中制备无无糖酒精的方法， 葡萄糖醛酸-D-SORBITOL
- 专利标题： Process for the preparation of epimer-free sugar alcohols from the group consisting of xylitol, sorbitol (D-glucitol), 4-O-.beta.-D-galactopyranosyl-D-glucitol and 4-O-.alpha.-D-glucopyranosyl-D-sorbitol
- 专利标题（中）： 由XYLITOL，SORBITOL（D-GLUCITOL），4-O-（BETA）-D-葡萄糖醛酸-D-GLUCITOL和4-O-（ALPHA）-D-葡萄糖苷组合的组中制备无无糖酒精的方法， 葡萄糖醛酸-D-SORBITOL
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申请号： US585747申请日： 1990-09-20
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公开(公告)号： US5162517A公开(公告)日： 1992-11-10
- 发明人: Gerhard Darsow
- 申请人： Gerhard Darsow
- 申请人地址： DEX Leverkusen
- 专利权人： Bayer Aktiengesellschaft
- 当前专利权人： Bayer Aktiengesellschaft
- 当前专利权人地址： DEX Leverkusen
- 优先权： DEX3934457 19891014; DEX3934458 19891014; DEX3939058 19891125; DEX4000839 19900113
- 主分类号： C07H15/04
- IPC分类号： C07H15/04 ; B01J23/74 ; C07B61/00 ; C07C29/132 ; C07C29/145 ; C07C31/18 ; C07C31/26
摘要：
The sugar alcohols given in the title can be prepared in epimer-free form from the corresponding sugars by catalytic hydrogenation in aqueous solution using hydrogen, the hydrogenation being carried out continuously at 100-500 bar of H.sub.2 and 60.degree.-125.degree. C. on a fixed bed of carrier-free mouldings composed of pressed powders of the elements of the iron group of the periodic table. The mouldings have a compressive strength of above 50 N and an internal surface of 10-90 m.sup.2 /g.
公开/授权文献
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