| 摘要 |
<p>1,174,308. Printing processes. FARBENFABRIKEN BAYER A.G. 23 March, 1967 [24 March, 1966], No. 13647/67. Heading B6C. [Also in Division C3] Various foundations such as paper, aluminium, regenerated cellulose, polyethylene, polyamide, polycarbonate, polyvinyl chloride or polystyrene may have printed thereon a quickdrying printing material which contains as a binder an addition product of a polyol and a polymer having an isocyanurate structure of 2,4-toluene diisocyanate or diisocyanate mixtures containing mainly 2,4-toluene diisocyanate in a ratio of NCO to OH greater than 1À5, a solvent for the binder and optionally an organic or inorganic colouring matter. In specific examples the printing materials are printed in a conventional screen printing machine, by the gravure or indirect gravure process, or on a flexographic printing machine with infra-red drying apparatus on to foundations which may be art printing paper, pretreated polyethylene, polystyrene, P.V.C. foil or aluminium foil. Reference has been directed by the Comptroller to Specification 1,076,090.</p> |
