POLYESTER SYNTHETIC FIBRE FOR USE AS A RUBBER-REINFORCING MATERIAL AND RUBBER REINFORCED THEREBY

摘要

1417347 Treating polyester fibres YOKOHAMA RUBBER CO LTD 18 May 1973 [29 May 1972] 23877/73 Heading D1P A process for treating a polyester fibre for use as a rubber reinforcement, comprises the steps of applying to the polyester fibre an aqueous treating solution obtained by dissolving in water the reaction product of excess resorcinol, an allyl halide and an alkali metal hydroxide, to which formalin and aqueous ammonia have sequentially been added, and then applying a resorcinol-formaldehyde latex to the thus treated polyester fibre. The reaction product may be obtained by heating a mixture of resorcinol and an alkali metal hydrovide in a molar ratio of 1 mole of resorcinol to 0.1 to 0.7 mole of the alkali metal hydroxide, and adding the allyl halide in a molar ratio of 0.1 to 0.7 mole per mole of resorcinol. The reaction may be conducted in the melt or in the presence of an organic solvent such as methanol, ethanol, n-propanol, isopropanol, acetone, ether and tetrahydrofan. Preferably the allyl halide is allyl bromide or allyl chloride. The treated fibre may be subjected to a heat treatment at 150‹-250‹C, preferably 230‹C for 2 minutes after drying, e.g. at 120‹C for 4 minutes and prior to applying the resorcinolformaldehyde resin latex. The treating solution may contain allyl-(3-hydroxyphenyl) ether, its derivatives and polymers.