Nitric acid removal from oxidation products
    8.
    发明授权
    Nitric acid removal from oxidation products 有权
    从氧化产物中除去硝酸

    公开(公告)号:US6049004A

    公开(公告)日:2000-04-11

    申请号:US209285

    申请日:1998-12-11

    摘要: A method for synthesizing and isolating an oxidation product is disclosed wherein nitric acid is reacted with an oxidizable reactant and the desired oxidized product is extracted using an organic solvent such as a dialkyl ether. The method permits the direct crystallization of aldaric acids such as glucaric acid and mannaric acid and eliminates the necessity of employing complicated, time consuming and wasteful neutralization/acidification steps.

    摘要翻译: 公开了一种用于合成和分离氧化产物的方法,其中将硝酸与可氧化的反应物反应,并使用有机溶剂如二烷基醚萃取所需的氧化产物。 该方法允许醛糖酸如葡糖二酸和甘露糖酸的直接结晶,并且消除了使用复杂,耗时和浪费的中和/酸化步骤的必要性。

    Process for preparing poly (glucaramides)
    10.
    发明授权
    Process for preparing poly (glucaramides) 失效
    制备聚(葡糖酰胺)的方法

    公开(公告)号:US5473035A

    公开(公告)日:1995-12-05

    申请号:US225696

    申请日:1994-04-11

    CPC分类号: C07C235/10 C08G69/10

    摘要: Novel monomers are described which contain a glucaric acid unit linked through an amide bond formed between a carbonyl carbon of a D-glucaric acid and one of the amino nitrogens of a primary diamine as well as their alkali metal salts. These N-aminohydrocarbylene (or N-aminoheterohydrocarbylene)-D-glucaramidates may then be polymerized to form polyhydroxypolyamides and in particular stereoregular polyhydroxypolyamides.

    摘要翻译: 描述了含有通过D-葡糖二酸的羰基碳与一级胺的一种氨基氮之间形成的酰胺键连接的葡糖二酸单元及其碱金属盐的新型单体。 然后可以将这些N-氨基亚烃基(或N-氨基杂烃基)-D-葡糖酰氨基聚合物聚合形成多羟基聚酰胺,特别是立体规则的聚羟基聚酰胺。