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Abstract

Hot-melt adhesive compositions are described that have at least one thermoplastic poly-α-olefin that is solid at 25° C. and silane groups, at least one thermoplastic poly-α-olefin that is solid at 25° C. and that does not contain silane groups, and at least one resin that is tackifying at 25° C. The product of the content of the thermoplastic poly-α-olefin with respect to the weight and the degree of grafting of the thermoplastic poly-α-olefin is ≦0.06. In comparison to conventional hot-melt adhesive compositions based on poly-α-olefins, the described hot-melt adhesive compositions are characterized in that the hot-melt adhesive compositions can be reactivated after the processing and cross-linking. That is, the compositions can be put into a liquid or soft state by means of heat and pressure and can be processed well again. At the same time, the described hot-melt adhesives have the physical processing properties characteristic of reactive polyolefin hot-melt adhesives, such as high initial heat resistance, high final strength and heat stability, and good resistance to environmental influences.

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