FIELD: chemistry.
SUBSTANCE: acrylic copolymer, consisting of a plurality of copolymerisable monomers comprising at least one ethylenically unsaturated carboxylic acid with ethylene bonds is obtained via free-radical emulsion copolymerisation. The pressure sensitive adhesive acrylic polymer is neutralised with at least one hydroxy-functional amine to pH higher than 4.5. The pressure sensitive adhesive composition can be removed under the action of an aqueous caustic solution at temperature of at least 50°C. The pressure sensitive adhesive composition is suitable for high-speed deposition on a polymer film in form of a coating. A label with an adhesive layer from the pressure sensitive adhesive composition is capable of sticking to the cylindrical curved surface of an article. The removable polymer label is used on reusable containers.
EFFECT: as a result of using the pressure sensitive adhesive composition, polymer film-type labels can be quickly and completely removed from a surface by washing, while preserving their excellent aesthetic and mechanical properties.
26 cl, 5 tbl, 19 ex, 8 dwg
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Authors
Dates
2012-09-20—Published
2007-11-01—Filed