| 摘要 |
1325607 Anhydrite compositions E HOELLFRITSCH 27 Aug 1970 [28 Aug 1969] 41375/70 Heading C1H A cast floor covering with a horizontal surface on a load bearing substrate is obtained by forming on the substrate a flowable mixture of anhydrite, a hardener, water in a weight ratio of 0À17-0À5 to 1 of solisd, a sedimentation delayer, a substance to increase the flowability. Specified as hardeners are CaO and K 2 SO 4 , as sedimentation delayers-a water soluble cellulose ether; as flow increasers-sulphite -or sulphonic acid-modified resins based on an amino-5-triazine having at least two NH 2 groups. If metal oxides or hydroxides, e.g. of A.E.M. or Al are added to the resins the strength of the composition increases. A naphthalenic sulphonic acid-formaldehyde condensate is optional as a wetting agent. |
