| 摘要 |
1475942 Polyamide moulding composition BASF AG 13 Sept 1974 [14 Sept 1973] 39977/74 Heading C3R A glass-fibre reinforced polyamide moulding material contains (a) 40 to 90 wt. per cent polyamide and (b) 10 to 60% glass fibres coated with a film-forming polymer containing 4 to 50 wt. per cent of units wherein R<SP>1</SP> is H or C 1-5 alkyl and R<SP>2</SP> is a C 2-10 saturated hydrocarbon radial. The coating may also include a conventional silane coupler, e.g. triethoxy-gamma-aminopropyl silane, and lubricant, e.g. oxyalkylated alcohol. The moulding material may contain conventional additives, e.g. a stabilizer, flame retardant, pigment or filler. Various monomers for forming the polyamide and monomers and mono- or di-olefinic comonomers for forming the film-forming polymer are specified. The glass fibre may be of 0À1 to 1 mm. length and 5 to 20 micron diameter and may be continuous filaments comminated during the mixing. They may be coated with 0À1 to 10, preferably 1 wt. per cent of the polymer from an aqueous dispersion which may result from emulsion polymerisation, e.g. using sulphonated oxyethylated isooctyl phenol as emulsifier. In specific examples the polyamide is nylon 6 and the film forming polymer is a copolymer derived from 55 to 85% butyl acrylate, 5 to 25% acrylonitrile, 2% acrylic acid and 10 to 40% butanediol-monoacrylateacetylacetate. |
