HIGH HYDROXYETHYLATED STARCH AND HIGH DISPERSANT LEVELS IN GYPSUM WALLBOARD
    2.
    发明申请
    HIGH HYDROXYETHYLATED STARCH AND HIGH DISPERSANT LEVELS IN GYPSUM WALLBOARD 审中-公开
    高水羟基淀粉和高分子水平在黄瓜墙板

    公开(公告)号:US20080070026A1

    公开(公告)日:2008-03-20

    申请号:US11932211

    申请日:2007-10-31

    申请人: Qiang Yu Sharon Tracy

    发明人: Qiang Yu Sharon Tracy

    IPC分类号: B32B3/00 C04B9/00

    摘要: The invention generally provides gypsum-containing slurries including stucco, a hydroxyethylated starch, naphthalenesulfonate dispersant, and sodium trimetaphosphate. The naphthalenesulfonate dispersant is present in an amount of about 0.1%-3.0% by weight based on the weight of dry stucco. The hydroxyethylated starch is present in an amount of from about 0.5% by weight to about 10% by weight based on the weight of dry stucco in the formulation. The sodium trimetaphosphate is present in an amount of about 0.1%-0.4% by weight based on the weight of dry stucco. Other slurry additives can include accelerators, binders, paper fiber, glass fiber, and other known ingredients. The invention also comprises the gypsum-containing products made with such slurries, for example, lightweight gypsum wallboard, and a method of making lightweight gypsum wallboard.

    摘要翻译: 本发明通常提供含石灰的浆料,羟乙基化淀粉,萘磺酸盐分散剂和三偏磷酸钠。 基于干灰泥的重量,萘磺酸盐分散剂的存在量为约0.1重量%至3.0重量%。 羟乙基化淀粉的存在量为制剂中干灰泥重量的约0.5重量%至约10重量%。 基于干灰泥的重量,三偏磷酸钠的存在量为约0.1重量%至0.4重量%。 其它浆料添加剂可以包括促进剂,粘合剂,纸纤维,玻璃纤维和其它已知成分。 本发明还包括用这种浆料制成的含石膏的产品,例如轻质石膏墙板,以及制造轻质石膏墙板的方法。