Autoadhesive
AssigneeBASF SE
InventorsDirk Wulff, Axel Weiss, Jose Maria Torres Llosa, Christofer Arisandy
Life of this patent
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Abstract
The use of a composition of low or no tack at 20° C. as an adhesive that can be adhered to itself (referred to below for short as an autoadhesive).
Claims20
The method of using a composition of low or no tack at 20° C. as an adhesive that can be adhered to itself (referred to below for short as an autoadhesive).
The method of the composition as an adhesive for the hot or cold sealing of packaging.
A polymer of low or no tack at 20° C. which is obtainable by multistage emulsion polymerization, with a glass transition temperature of all monomers of which the polymer is composed, calculated by the method of Fox, of −50 to +10° C., wherein the polymerization takes place in at least two temporally successive stages, the individual stages differing in the glass transition temperature (Tg) of the monomers, as calculated by the method of Fox, and the Tg of the last stage being at least 0° C.
Dependencies are inferred from the claim text.