Granulated hydrophobic additive for gypsum compositions
    1.
    发明授权
    Granulated hydrophobic additive for gypsum compositions 有权
    用于石膏组合物的颗粒状疏水添加剂

    公开(公告)号:US07311770B2

    公开(公告)日:2007-12-25

    申请号:US10398327

    申请日:2001-09-20

    IPC分类号: C04B11/00

    摘要: A hydrophobic gypsum composition is provided which contains gypsum, a granulated hydrophobing additive and a pH effecting additive in an amount sufficient to maintain the pH of the composition in the range of 8 and 12.5, in the presence of water. The granule contains an organopolysiloxane having silicon bonded hydrogen, a water soluble or water dispersible binder, and a carrier, preferably gypsum or a stearate salt, in an amount sufficient to hydrophobe the gypsum. The pH effecting additive is preferably lime but may be any appropriate additive.

    摘要翻译: 提供了一种疏水性石膏组合物,其在水存在下含有足以将组合物的pH保持在8和12.5范围内的石膏,颗粒状疏水添加剂和pH影响添加剂。 颗粒含有具有硅键合氢,水溶性或水分散性粘合剂的有机聚硅氧烷,以及足以疏水石膏的量的载体,优选石膏或硬脂酸盐。 pH影响添加剂优选为石灰,但可以是任何合适的添加剂。