| 摘要 |
1,171,774. Laminates. DUNLOP CO. Ltd. 26 Jan., 1967 [10 Feb., 1966], No. 5866/66. Heading B5N. [Also in Divisions C3 and D1] A method of bonding a surface of a polymeric material having -CO-NH- linkages to another surface of a polymeric material having - CONH- linkages comprises treating at least one of the surfaces to be bonded with a halide, oxyhalide or organohalide of phosphorus, arsenic or antimony, contacting the surfaces to be bonded and isolating a bonded product. Specified polymers which may be in the form of fibres, filaments, powders, granules, felts, woven fabrics, non-woven fabrics, sheets and films are nylon-6, nylon-66, nylon-610 and polyurethanes. Many halogen-containing compounds are specified, examples being PCl 3 , POCl 3 , PCl 5 , C 6 H 5 - POCl 2 , C 6 H 5 PCl 2 , AsCl 3 , SbCl 3 and SbCl 3 . The compounds may be liquids or in the form of solutions or dispersions; alternatively vapours may be used. The treated surfaces are preferably exposed to air at ambient or elevated temperature prior to bonding. Bonding is preferably effected in a press at elevated temperature. |
