Method for imparting water repellency to inorganic surfaces
    3.
    发明授权
    Method for imparting water repellency to inorganic surfaces 失效
    赋予无机表面斥水性的方法

    公开(公告)号:US3914476A

    公开(公告)日:1975-10-21

    申请号:US36271473

    申请日:1973-05-22

    摘要: The invention relates to a method for rendering inorganic surfaces water repellent by treating the surfaces with aqueous soluble carbonates, or bicarbonates simultaneously with, or subsequent to coating the surfaces with an aqueous solution of alkali metal organosiliconates. The inorganic surfaces contain free lime. Surfaces to be treated include shaped building materials such as walls of concrete, clay bricks, natural stone, roofing tile, clay bricks, calcium silicate bricks, and asbestos cement. Wall coatings containing sand and hydraulic or nonhydraulic binding materials such as lime, cement and gypsum may also be treated.

    摘要翻译: 本发明涉及一种通过用水溶性碳酸酯或碳酸氢盐同时或之后用碱金属有机硅酸盐水溶液处理表面而使无机表面具有疏水性的方法。

    Method of preventing the deterioration of a hardened cement-based mass
    6.
    发明授权
    Method of preventing the deterioration of a hardened cement-based mass 失效
    防止硬化水泥基质量变质的方法

    公开(公告)号:US5021260A

    公开(公告)日:1991-06-04

    申请号:US523416

    申请日:1990-05-15

    摘要: A hardened cement-based mass having a corrosive metallic material embedded therein, or containing an aggregate reactive with an alkaline substance, is impregnated with an aqueous solution containing 1 to 50% by weight of a dissolved nitrite of an alkali metal or alkaline earth metal and 0.01 to 20% by weight of a dissolved organic silicon compound such as sodium methylsiliconate or potassium methylsiconate, or a dissolved or emulsified polymer thereof, or with a solution prepared by using an aliphatic alcohol having 1 to 3 carbon atoms, and containing 1 to 50% by weight of a dissolved nitrite of an alkali metal or alkaline earth metal and 0.01 to 20% by weight of an dissolved organic silicon compound such as methyltrimethoxysilane or ethyltrimethoxysilane, or a dissolved polymer thereof, and is allowed to dry in the air. Alternatively, the mass is coated with an unsolidified cement paste, mortar or concrete containing 1 to 25% by weight of a nitrite of an alkali metal or alkaline earth metal and 0.01 to 20% by weight of an organic silicon compound such as sodium or potassium methylsiliconate, or a polymer thereof, based on the weight of the cement which, e.g., the cement paste contains, and, e.g., the cement paste is allowed to harden in the air.

    Rendering building materials hydrophobic
    7.
    发明授权
    Rendering building materials hydrophobic 失效
    渲染建筑材料疏水

    公开(公告)号:US4076868A

    公开(公告)日:1978-02-28

    申请号:US681354

    申请日:1976-04-29

    摘要: A process for simultaneously cleaning and rendering building materials hydrophobic which comprises applying to the surface of the building material a solution of a hydrophobic agent having admixed therewith a filler having a surface area of at least 50 mg.sup.2 /g and after evaporation of the solvent, removing the filler residue.

    摘要翻译: 一种同时清洁和使建筑材料疏水的方法,其包括向建筑材料的表面施加具有与表面积至少为50mg2 / g的填料一起混合的疏水剂的溶液,并且在蒸发溶剂之后,除去 填料残渣。