| 摘要 |
<p>1,180,227. Armouring composition. CHEMICAL & INSULATING CO. Ltd. 22 Aug., 1967 [16 Aug., 1966], No. 36597/66. Heading C1H. A heat-insulating armouring composition comprises at least 75% of Portland cement and up to 5% of wood pulp fibres, by weight. Optional additives are additional fibres, e.g. viscose rayon fibres, cellulose acetate fibres and fibrous cellulose triacetate; silica flour; polyvinyl acetate emulsion and hydroxypropylmethyl cellulose.</p> |
