| 摘要 |
<p>1,271,632. Metal-plated polyolefin articles. AVISUN CORP. 5 Jan., 1970 [6 Jan., 1969], No. 432/70. Heading C3P. [Also in Divisions C6-C7] Compositions suitable for making metallizable articles comprise (1) a crystalline polymer of a C 2-8 olefin and (2) 1 to 55 weight per cent of a compatible modifier selected from polyterpene resins, rosins, disproportionated rosins, polymerized rosins, hydrogenated rosins, dirosin amines, rosin amides, ester gums and defined petroleum resins having a molecular weight less than 3000. The polyolefin may be a polymer of ethylene, propylene, butene-1, 3-methylbutene-1 and/or 4-methylpentene-1, 1, or a copolymer thereof with methyl methacrylate, ethyl acrylate, acrylonitrile or vinyl acetate. The compositions may also contain non-ionic surface-active agents, stabilizers, plasticizers and fillers, e.g. talc, titanium dioxide, calcium carbonate, bentonite, clay, wood flour and asbestos; and may be made into shaped articles and metallized by plating or vacuum metallizing. Many suitable modifiers are listed and examples describe compositions comprising dialkyl thiodipropionate, 2,6 - di - t - butyl - 4 - methylphenol, calcium stearate and titanium dioxide or (2) t-octylphenol/ethylene oxide condensate, together with polypropylene and (1 and 2) polyterpene resin, (5 and 13) polymerized wood rosin, (6) disproportionated wood rosin, (7) tall oil rosin, (8) heat-treated tall oil rosin, (9) gum rosin, (10 and 11) wood rosin, (12) heat treated wood rosin, (16) hydrogenated rosin, (17 and 18) glycerol ester of hydrogenated rosin, (19) dirosin amine, (20) hydrogenated rosin diamide of ethylene diamine, (21) hydrogenated rosin monoamide of ethylene diamine, (22, 23 and 26) petroleum resins, (24) vinyl toluene/α-methylstyrene copolymer, and (27) styrene/acrylonitrile/indene copolymer; and together with propylene/ethylene terminal block copolymers and (3, 4 and 15) polyterpene resins, (14) pine wood rosin, (25) vinyltoluene/α-methyl styrene copolymer and (28 and 29) petroleum resins.</p> |
