Oxidation process for producing polycarboxylates from polysaccharides
    1.
    发明授权
    Oxidation process for producing polycarboxylates from polysaccharides 失效
    用于从多糖制备多羧酸盐的氧化方法

    公开(公告)号:US5856470A

    公开(公告)日:1999-01-05

    申请号:US913797

    申请日:1997-12-29

    摘要: A process for producing polycarboxylic acids or salts thereof by contacting a polysaccharide with nitrogen dioxide and dinitrogen tetroxide at a charging temperature in the range from the boiling point of nitrogen dioxide under a particular pressure to a temperature which is 50.degree. C. higher than said boiling point, oxidizing the primary alcohol groups of the polysaccharide at a temperature which is at least about 10.degree. C. above said charging temperature to convert the primary alcohol groups into carboxyl groups, and optionally, at least partially neutralizing the carboxylic acid groups formed.

    摘要翻译: PCT No.PCT / EP96 / 01065 Sec。 371 1997年12月29日第 102(e)1997年12月29日PCT PCT 1996年3月13日PCT公布。 第WO96 / 29351号公报 日本1996年9月26日一种多元羧酸或其盐的制备方法,其特征在于,在特定压力下的二氧化氮的沸点至50℃​​的温度下,使多糖与二氧化氮和四氧化二氮接触, 高于所述沸点,在高于所述带电温度的至少约10℃的温度下氧化多糖的伯醇基团以将伯醇基团转化为羧基,并且任选地至少部分中和羧酸 酸性基团形成。

    Polyurethane adhesive
    3.
    发明授权
    Polyurethane adhesive 失效
    聚氨酯胶粘剂

    公开(公告)号:US06630050B1

    公开(公告)日:2003-10-07

    申请号:US09509363

    申请日:2000-05-24

    IPC分类号: C08G1872

    摘要: The invention relates to a contact adhesive based on a polyurethane of at least one diisocyanate and at least one low molecular weight polyethylene glycol, the polyethylene glycol having a molecular weight of up to 2,000 and the polyurethane having a degrees of crystallization of less than 20%. The contact adhesive can be applied from the melt or from an aqueous solution or dispersion. Surprisingly, it is suitable not only for polar plastic surface, but above all for PE and PP surfaces and of course for paper. Accordingly, the contact adhesive is preferably useful for applying paper labels to PE bottles.

    摘要翻译: 本发明涉及一种基于至少一种二异氰酸酯和至少一种低分子量聚乙二醇的聚氨酯的接触粘合剂,聚乙二醇具有高达2,000的分子量,聚氨酯具有小于20%的结晶度, 。 接触粘合剂可以从熔体或水溶液或分散体施加。 令人惊讶的是,它不仅适用于极性塑料表面,还适用于PE和PP表面,当然也适用于纸张。 因此,接触粘合剂优选用于将纸标签应用于PE瓶。

    Process for the production of neutralized polysaccharide-based
polycarboxylates
    4.
    发明授权
    Process for the production of neutralized polysaccharide-based polycarboxylates 失效
    用于生产中和多糖类聚羧酸盐的方法

    公开(公告)号:US5892027A

    公开(公告)日:1999-04-06

    申请号:US913071

    申请日:1997-10-07

    摘要: A process for producing solid polycarboxylic acid salts from polysaccharides with gaseous nitrogen dioxide and dinitrogen tetroxide to at least partially convert the primary alcohol groups of the polysaccharides into carboxyl groups and form a solid polycarboxylic acid and then mixing the polycarboxylic acid with a solid neutralizing agent to at least partially neutralized the carboxylic acid groups of the polycarboxylic acid.

    摘要翻译: PCT No.PCT / EP96 / 00791 Sec。 371日期1997年10月7日第 102(e)日期1997年10月7日PCT 1996年2月27日PCT PCT。 WO96 / 27618 PCT出版物 日期1996年9月12日一种用气态二氧化氮和四氧化二氮从多糖制备固体多羧酸盐的方法,至少部分将多糖的伯醇基团转化为羧基并形成固体多羧酸,然后将多元羧酸与 固体中和剂以至少部分中和多元羧酸的羧酸基团。