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    • 67. 发明申请
    • COMPOUNDED SURFACE TREATED CARBOXYALKYLATED STARCH POLYCRYLATE COMPOSITES
    • 化合物表面处理的羧甲基纤维素聚酰胺复合材料
    • WO2013158945A1
    • 2013-10-24
    • PCT/US2013/037274
    • 2013-04-19
    • ARCHER DANIELS MIDLAND COMPANY
    • SUAREZ-HERNANDEZ, Oscar
    • C08J3/24
    • B01J20/267B01J20/223B01J20/3014B01J20/3078B01J20/3208C08J3/24C08J3/245C08J7/04C08J2333/02C08J2333/26C08J2403/06
    • A dual-surface treated composite superabsorbent particle comprising a polycarboxylate polymer (e.g., saponified polyacrylamide) and a carboxylated starch polymer is disclosed. The surface of the particle is cross linked through esterification with a C 2 -C 4 polyol exemplified with glycerol. In addition, the surface region is crosslinked through ionic bonds with a trivalent metal ion exemplified with aluminum. In a critical method of making, the acidification of the surface with the polyol occurs prior to treatment with the trivalent metal ion, which results is a hybrid particle that can include up to about 40% of carboxymethyl starch yet exhibit a FSC of at least 47 g/g, a CRC of at least 27 g/g, an AUL of at least 18 g/g under a load of 0.7 psi, and a SFR of at least 180 ml/min. Also disclosed is a method of making that includes a surface esterification prior to aluminum treatment.
    • 公开了一种包含多羧酸盐聚合物(例如皂化聚丙烯酰胺)和羧化淀粉聚合物的双表面处理复合超吸收颗粒。 颗粒的表面通过酯化与C2-C4多元醇交联,以甘油为例。 此外,表面区域通过离子键与以铝为例列举的三价金属离子交联。 在制备的关键方法中,用三元金属离子处理之前,用多元醇进行表面酸化发生,这是一种杂化颗粒,其可以包括高达约40%的羧甲基淀粉,但表现出至少47的FSC g / g,至少27g / g的CRC,在0.7psi负载下至少18g / g的AUL和至少180ml / min的SFR。 还公开了一种制备方法,其包括在铝处理之前的表面酯化。