Acidic gases permeated carboxyalkyl starch and alkaline starch extrudates and process for making the same
    1.
    发明授权
    Acidic gases permeated carboxyalkyl starch and alkaline starch extrudates and process for making the same 有权
    酸性气体透过羧基烷基淀粉和碱性淀粉挤出物,并制成相同的过程

    公开(公告)号:US09107975B2

    公开(公告)日:2015-08-18

    申请号:US13202456

    申请日:2010-02-22

    摘要: The present disclosure relates to particles comprising carboxyalkyl starch that are permeated with an acidic gas and their uses as absorbent materials. It was discovered that superabsorbent materials could be obtained from carboxyalkyl starch particles permeated with the acidic gas and heated to a temperature of at least 100° C. until they reach an AUL at 0.7 psi. of at least 14 g/g and a CRC of at least 18 g/g. Moreover, it was discovered that the pH of alkaline starch extrudates can be adjusted by permeating particles of the extrudate with the acidic gas even with treating the particles to temperatures less than 100° C. The carboxyalkyl starch particles obtained by the methods described herein are characterized as having intramolecular ester bonds, which are greater in number at the surface of the particle than in the core, and the particles have a greater concentration of cation of the acidic gas at the surface than a the core.

    摘要翻译: 本公开涉及包含羧酸烷基淀粉的颗粒,其被酸性气体渗透并且其用作吸收材料。 已经发现超吸收材料可以从用酸性气体渗透的羧基烷基淀粉颗粒获得并加热到至少100℃的温度,直到它们在0.7psi下达到AUL。 至少为14g / g,CRC为至少18g / g。 此外,已经发现,即使将颗粒处理到低于100℃的温度,也可以通过用酸性气体渗透挤出物的颗粒来调节碱性淀粉挤出物的pH。通过本文所述的方法获得的羧基烷基淀粉颗粒被表征 具有分子内酯键,其在颗粒表面上的数量大于芯中的分子内酯键,并且颗粒在表面处具有比芯更高浓度的酸性气体的阳离子。

    Acidic Gases Permeated Carboxyalkyl Starch and Alkaline Starch Extrudates and Process for Making the Same
    3.
    发明申请
    Acidic Gases Permeated Carboxyalkyl Starch and Alkaline Starch Extrudates and Process for Making the Same 审中-公开
    酸性气体渗透载体烷基淀粉和碱性淀粉挤出物及其制备方法

    公开(公告)号:US20110297185A1

    公开(公告)日:2011-12-08

    申请号:US13202456

    申请日:2010-02-22

    摘要: The present disclosure relates to particles comprising carboxyalkyl starch that are permeated with an acidic gas and their uses as absorbent materials. It was discovered that superabsorbent materials could be obtained from carboxyalkyl starch particles permeated with the acidic gas and heated to a temperature of at least 100° C. until they reach an AUL at 0.7 psi. of at least 14 g/g and a CRC of at least 18 g/g. Moreover, it was discovered that the pH of alkaline starch extrudates can be adjusted by permeating particles of the extrudate with the acidic gas even with treating the particles to temperatures less than 100° C. The carboxyalkyl starch particles obtained by the methods described herein are characterized as having intramolecular ester bonds, which are greater in number at the surface of the particle than in the core, and the particles have a greater concentration of cation of the acidic gas at the surface than a the core.

    摘要翻译: 本公开涉及包含羧酸烷基淀粉的颗粒,其被酸性气体渗透并且其用作吸收材料。 已经发现超吸收材料可以从用酸性气体渗透的羧基烷基淀粉颗粒获得并加热到至少100℃的温度,直到它们在0.7psi下达到AUL。 至少为14g / g,CRC为至少18g / g。 此外,已经发现,即使将颗粒处理到低于100℃的温度,也可以通过用酸性气体渗透挤出物的颗粒来调节碱性淀粉挤出物的pH。通过本文所述的方法获得的羧基烷基淀粉颗粒被表征 具有分子内酯键,其在颗粒表面上的数量大于芯中的分子内酯键,并且颗粒在表面处具有比芯更高浓度的酸性气体的阳离子。