The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 16, 2016
Filed:
Oct. 27, 2011
Marc Husemann, Hamburg, DE;
Kai Ellringmann, Hamburg, DE;
Marco Kupsky, Quickborn, DE;
Claus Meyer, Hamburg, DE;
Marc Husemann, Hamburg, DE;
Kai Ellringmann, Hamburg, DE;
Marco Kupsky, Quickborn, DE;
Claus Meyer, Hamburg, DE;
TESA SE, Norderstedt, DE;
Abstract
The invention relates to a double-sided adhesive tape, comprising a carrier layer and two exterior pressure-sensitive adhesive compound layers, wherein at least one of the pressure-sensitive adhesive compounds is the crosslinking product composed of a polymer compound which comprises at least the following components: A) a polymer component (component A) comprising 88 to 100 wt % of one or more polyacrylates (component A1) composed of at least: a) 1 to 15 wt %, relative to component A1, of one or more monomers having at least one ethylenically unsaturated bond, each being selected such that the glass transition temperatures Tof the corresponding homopolymers composed of the respective monomers are at least 0° C. (monomers a), wherein at least some of the monomers (a) still comprise at least one carboxylic acid (monomers a1), b) 85 to 99 wt %, relative to component A1, of one or more monomers from the group of acrylic acid esters and methacrylic acid esters, each being selected such that the glass transition temperatures Tof the corresponding homopolymers composed of the respective monomers are not higher than −30° C. (monomers b), B) at least one covalently cross-linking bifunctional or polyfunctional crosslinking agent (component B), wherein components A and B in total amount to at least 95 wt % of the polymer compound, and wherein the at least one crosslinking agent is added in a quantity such that the quantity ratio V=n/nof the substance quantity nof the crosslinking-active centers of the crosslinking agent to the theoretical substance quantity nof the macromolecule of polymer component A1 has a value between 0.15 and 0.60, wherein the substance quantity nof the crosslinking-active centers of the crosslinking agent is obtained from the mass mof the crosslinking agent, multiplied by the number f of crosslinking-active centers per crosslinking agent molecule, divided by the molecular weight Mof the crosslinking agent, that is, n=f·m/M, and the theoretical substance quantity nof the macromolecule of polymer component A1 is obtained from the mass mof the polymer component in the pressure-sensitive adhesive compound, divided by the average molecular weight Mof said component, that is n=m/M.