| 摘要 |
1406741 Coated products BASF FARBEN & FASERN AG 7 Feb 1973 [11 March 1972 1 April 1972 22 April 1972] 6043/73 Heading B2E [Also in Divisions B5 and C3] A coating which is opaque to visible light is prepared by outing a coating composition which is transparent to visible light and includes an unsaturated polyester resin and a copolymer-isable monomer, the proportion by weight of unsaturated polyester resin in the total composition being less than 42%, and 0 to 30% by weight of the copolymerisable monomer being replaced by a non-reactive solvent or diluent for polyester resins. In the examples compositions comprising unsaturated polyester resins prepared from 1, 2-propylene glycol, maleic anhydride, phthalic anhydride and fumaric acid, hydroquinone, styrene, cobalt naphthenate solution in toluene or styrene, benzoyl peroxide/dibutylphthalate paste, paraffin solution in toluene or styrene, fast yellow vinyl toluene, polyadipate, silicic acid aerogel, benzoin-isopropyl ether, silicic acid, barium sulphate, 2, 4, 6-tribromophenyl ether, toluene, cyclohexamone peroxide, benzoin methyl ether, methylbenzoin methyl ether, butyl methacrylate, calcium carbonate, methylol-benzoinmethyl thio, nitrocellulose solution in ethyl acetate and naphthaline-2-sulphochloride are placed in moulds, coated on glass plates, impregnated into glass fibre mats and coated onto chipboard sheets or fibre board belts and cured using heat, high pressure mercury vapour lamps, low pressure mercury vapour lamps, a jet drier blowing hot air, an infra-red dark radiator and an inductive high frequency field. |
