Method of water dispersing pregelatinized starch in making gypsum products
    4.
    发明授权
    Method of water dispersing pregelatinized starch in making gypsum products 有权
    水分散预胶化淀粉制备石膏产品的方法

    公开(公告)号:US08262820B2

    公开(公告)日:2012-09-11

    申请号:US11413528

    申请日:2006-04-28

    IPC分类号: B32B13/00

    摘要: The invention provides in one embodiment a gypsum-containing slurry including stucco and an aqueous pre-dispersion of a pregelatinized starch. Also provided is a method of making gypsum wallboard by providing a pre-dispersion of the pregelatinized starch in water, and adding the pregelatinized starch pre-dispersion to the gypsum-containing slurry. The pregelatinized starch can have a particle size distribution within the following range: d (0.1)=about 20μ-35μ, d (0.5)=about 60μ-110μ, d (0.9)=about 100μ-220μ.

    摘要翻译: 本发明在一个实施方案中提供了包含灰泥和预胶化淀粉的预分散水的含石膏浆料。 还提供了通过提供预胶化淀粉在水中的预分散并将预胶化淀粉预分散体加入到含石膏浆料中来制备石膏墙板的方法。 预胶化淀粉可以具有以下范围内的粒度分布:d(0.1)=约20μ-35μ,d(0.5)=约60μ-110μ,d(0.9)=约100μ-220μ。

    High Starch Light Weight Gypsum Wallboard
    8.
    发明申请
    High Starch Light Weight Gypsum Wallboard 有权
    高淀粉轻质石膏墙板

    公开(公告)号:US20100239886A1

    公开(公告)日:2010-09-23

    申请号:US12795125

    申请日:2010-06-07

    IPC分类号: B32B13/08 B32B13/00 B32B38/10

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

    摘要翻译: 本发明通常提供含石膏,萘磺酸盐分散剂和预胶化淀粉的含石膏的浆料。 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%。 基于制剂中干灰泥的重量,预胶化淀粉的存在量为预胶化淀粉的至少约0.5重量%至多约10重量%。 其它浆料添加剂可以包括三偏磷酸盐,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,例如石膏墙板,以及制造石膏墙板的方法。

    Projector
    10.
    外观设计

    公开(公告)号:USD907683S1

    公开(公告)日:2021-01-12

    申请号:US29700057

    申请日:2019-07-31

    申请人: Qiang Yu

    设计人: Qiang Yu