Gypsum plaster
    2.
    发明授权
    Gypsum plaster 失效
    石膏石膏

    公开(公告)号:US4225361A

    公开(公告)日:1980-09-30

    申请号:US969569

    申请日:1978-12-14

    IPC分类号: C04B24/00 C04B28/14 C04B11/14

    CPC分类号: C04B24/003

    摘要: Gypsum and anhydrite plaster is improved by adding at least one alkylene diphosphonic acid or water soluble salt thereof, represented by the following formula: ##STR1## wherein X is hydrogen or lower alkyl of 1-4 carbons, Y is hydrogen, hydroxy or lower alkyl of 1-4 carbons, and n is 1-10. The plaster is found to have an increased finishing time, while the quantity of water necessary is reduced and the mechanical strength of the finished plaster is improved.

    摘要翻译: 通过加入由下式表示的至少一种亚烷基二膦酸或其水溶性盐来改善石膏和无水石膏:其中X是氢或1-4个碳的低级烷基,Y是氢,羟基或低级烷基 1-4个碳原子,n为1-10。 发现石膏具有增加的精加工时间,同时减少所需的水量,并提高成品石膏的机械强度。

    Foaming agents for gypsum board manufacture
    3.
    发明授权
    Foaming agents for gypsum board manufacture 失效
    石膏板制造用发泡剂

    公开(公告)号:US4156615A

    公开(公告)日:1979-05-29

    申请号:US866660

    申请日:1978-01-03

    申请人: Samuel Cukier

    发明人: Samuel Cukier

    IPC分类号: C04B28/14 C04B11/14

    CPC分类号: C04B28/14 C04B2111/0062

    摘要: This invention relates to a novel means of manufacture of gypsum board. The improvement herein comprises the use of sodium and/or ammonium salts of ethoxylated, sulfated alcohols as foaming agents, said alcohols being a mixture of primary, linear alcohols having an average chain length of 9 carbon atoms.

    摘要翻译: 本发明涉及石膏板的新型制造方法。 本文的改进包括使用乙氧基化硫酸化醇的钠盐和/或铵盐作为发泡剂,所述醇是平均链长为9个碳原子的伯,直链醇的混合物。

    Method for sheet forming a gypsum hardened body
    9.
    发明授权
    Method for sheet forming a gypsum hardened body 失效
    用于片材形成石膏硬化体的方法

    公开(公告)号:US4411702A

    公开(公告)日:1983-10-25

    申请号:US357636

    申请日:1982-03-12

    CPC分类号: C04B28/08 C04B20/1051

    摘要: A method for sheet forming a remarkably waterproof gypsum hardened body, in which a main component consisting of gypsum dihydrate, slag and calcium hydroxide and additives are added with a part of the main component coated with a hydrophobic diorganopolysiloxane fluid having a kinetic viscosity of 10-10,000 CS at 25.degree. to be sheet formed and cured. The hydrophobic diorganopolysiloxane fluid is uniformly dispersed through the sheet formed gypsum hardened body and its strong water repelling property makes the gypsum hardened body remarkably waterproof to be used suitably as both interior and outdoor construction materials.

    摘要翻译: 一种形成非常防水的石膏硬化体的方法,其中添加由二水合石膏,炉渣和氢氧化钙和添加剂组成的主要组分,其中主要组分的一部分涂覆有动态粘度为10的疏水性二有机聚硅氧烷流体, 25℃的10,000 CS成片并固化。 疏水性二有机聚硅氧烷流体通过片状石膏硬化体均匀分散,其强斥水性使石膏硬化体显着防水,适用于室内外建筑材料。