Method of water dispersing pregelatinized starch in making gypsum products
    3.
    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

    Abstract: 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.

    Abstract translation: 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。

    Composite light weight gypsum wallboard
    7.
    发明授权
    Composite light weight gypsum wallboard 有权
    复合轻质石膏墙板

    公开(公告)号:US07736720B2

    公开(公告)日:2010-06-15

    申请号:US11537395

    申请日:2006-09-29

    Abstract: The invention provides a light weight composite gypsum board including a foamed low density set gypsum core, a top non-foamed (or reduced-foamed) bonding high density layer and a bottom non-foamed (or reduced-foamed) bonding high density layer, a top cover sheet bonded to the foamed low density set gypsum core by the top non-foamed (or reduced-foamed) bonding high density layer, and a bottom cover sheet bonded to the foamed low density set gypsum core by the bottom non-foamed (or reduced-foamed) bonding high density layer. The foamed low density set gypsum core is prepared having a density of less than about 30 pcf using soap foam in the gypsum-containing slurry. The combination of components provide a composite gypsum board having light weight and high strength.

    Abstract translation: 本发明提供了一种重量轻的复合石膏板,其包括发泡低密度石膏芯,顶部非发泡(或还原发泡)键合高密度层和底部非发泡(或还原发泡)键合高密度层, 通过顶部非发泡(或还原发泡)键合高密度层与发泡的低密度凝固石膏芯结合的顶盖片,以及通过底部未发泡的,与发泡的低密度凝固石膏芯接合的底盖片 (或还原发泡)键合高密度层。 使用含石膏浆料中的肥皂泡沫,制备密度低于约30PCF的泡沫低密度凝固石膏芯。 组分的组合提供了重量轻且强度高的复合石膏板。

    LIGHT WEIGHT GYPSUM BOARD
    10.
    发明申请
    LIGHT WEIGHT GYPSUM BOARD 有权
    轻重量塑胶板

    公开(公告)号:US20120251813A1

    公开(公告)日:2012-10-04

    申请号:US13493941

    申请日:2012-06-11

    Abstract: 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.

    Abstract translation: 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%〜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。

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