| 摘要 |
1342063 Cementitious compositions IMPERIAL CHEMICAL INDUSTRIES Ltd 19 April 1971 [18 March 1970] 13040/70 Addition to 1192864 Heading C1H Cement compositions contain water, an organic polyisocyanate and a filler selected from materials having a density up to 2 g./c.c., fibres, and materials sized 1-75 Á. Cements and polyisocyanates are as in Specification 1,331,781 and low density fillers are polystyrene and polyurethane foams, nylon, P.V.C., urea-HCHO polymers, weed, vermiculite and sawdusts; fibrous fillers are asbestos, glass, cotton, wool, polyamide, polyester and polyacrylonitrile fibres; and fine fillers are fly ash, mica, chalk, talc, clay (which can be expanded), foamed slag, asbestine, barytes, silica and slate. |
