Water-swellable hot-melt-type adhesive

This invention relates to a water-swellable hot-melt adhesive and to the use of such hot-melt adhesive to manufacture cables, for sealing purposes, for general assembly applications and for bonding non-woven articles. Water-swellable hot-melt adhesives based on a tackifying resin, a water-dispersibl...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Butterbach, Ruediger, Maassen, Ulricke, Kopannia, Siegfried
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:This invention relates to a water-swellable hot-melt adhesive and to the use of such hot-melt adhesive to manufacture cables, for sealing purposes, for general assembly applications and for bonding non-woven articles. Water-swellable hot-melt adhesives based on a tackifying resin, a water-dispersible EVA wax, an ethylene/acrylic ester copolymer, a water-soluble homo- or co-polymer and a super absorber polymer powder having an average particle size of less than 80 m display a clearly improved swelling behavior in comparison with the prior art. Furthermore, the swelling agent is significantly more homogeneously distributed in the matrix. Such hot-melt adhesives are suitable for ensuring longitudinal water impermeability in modern cable structures, as water-swellable jointing compounds in the building industry in the area of building conservation and restoration. Such hot-melt adhesives are further suitable for the manufacture of absorbent textile fabrics in the personal hygiene sector.