Use of organic additives for the preparation of cementitious compositions with improved properties of constancy of colour
    90.
    发明公开
    Use of organic additives for the preparation of cementitious compositions with improved properties of constancy of colour 失效
    的用于水泥组合物的制备有机添加剂使用具有改善的颜色稳定性能

    公开(公告)号:EP0885857A1

    公开(公告)日:1998-12-23

    申请号:EP98111125.5

    申请日:1998-06-17

    IPC分类号: C04B28/04 C04B14/30

    摘要: Described herein is the use of a combination of organic additives that is particularly advantageous for the preparation of cementitious compositions having a high conservation of the degree of white, which contain in mass a photocatalyst that is able to oxidize, in the presence of light, air and ambient humidity, pollutant substances present in the environment, the said photocatalyst being, in particular, titanium dioxide prevalently in the form of anatase.
    The above combination of additives comprises the following: a melamine resin; a cellulose ether; a polymer chosen from among an ethylene polymer, an acrylic polymer, and a terpolymer comprising as co-monomers at least one ester of acrylic acid with an alcohol and at least one ester of vinyl alcohol with a carboxylic acid, or alternatively, an acrylic, styrene or butadiene latex; and a chemically modified starch.

    摘要翻译: 描述是使用没有有机添加剂的组合是特别有利的,其具有高保守性白色,在块,其包含度的水泥质组合物的制备的光催化剂没有能够在光的存在下氧化,空气 和环境湿度,环境中存在的污染物质,所述的光催化剂是,特别地,钛以锐钛矿的形式普遍地氧化钛。 上述添加剂的组合包括以下步骤:三聚氰胺树脂; 纤维素醚; 从在乙烯聚合物与丙烯酸类聚合物中选择的聚合物,和三元共聚物,其包含共聚单体与乙烯醇的醇和至少一种酯丙烯酸中的至少一种酯与羧酸,或可选地,以丙烯酸类, 或苯乙烯 - 丁二烯胶乳; 和化学改性淀粉。