Bonding and coating agents for metals - contg. ethylene copolymers with free carboxyl groups

    公开(公告)号:DE2245558A1

    公开(公告)日:1974-04-04

    申请号:DE2245558

    申请日:1972-09-16

    Applicant: BASF AG

    Abstract: Coatings and adhesives for brass, copper, zinc, iron and steel consist of an ethylene copolymer contg. 0.5-30 wt.% bound ethylenically unsatd. carboxylic acid in bound form and 0.01-5 wt.% (on ethylene copolymer) of phthalocyanine, copper phthalocyanine, iron phthalocyanine, dihydroxybenzanthrone or a dihydroxybenzanthrone deriv. A pref. copolymer contains 60-90 wt.% ethylene, 0.5-20 wt.% acrylic acid and 0.5-20 wt.% tert. butyl acrylate. The copolymer can be compounded with the phthalocyanine or the dihydroxybenzathrone in a kneader, in an extruder, etc. The compsns. can be used for coating the metals (e.g. by melt extrusion, powder sintering etc.), for bonding the metals to aluminium, plastics, textiles, rubber, glass, etc. and for the construction of sandwich panels useful in building, vehicles, aircraft, containers, etc. The compsns. give good bond strengths which do not deteriorate on immersion in water.

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