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:
Jun. 04, 2013
Filed:
Apr. 06, 2012
Hans-georg Kinzelmann, Pulheim, DE;
Ekaterina Ryjkina, Duesseldorf, DE;
Thomas Kostka, Titz, DE;
Christoph Loschen, Erkrath, DE;
Philipp Spuhler, Duesseldorf, DE;
Michael Hoeltgen, Duesseldorf, DE;
Hans-Georg Kinzelmann, Pulheim, DE;
Ekaterina Ryjkina, Duesseldorf, DE;
Thomas Kostka, Titz, DE;
Christoph Loschen, Erkrath, DE;
Philipp Spuhler, Duesseldorf, DE;
Michael Hoeltgen, Duesseldorf, DE;
Henkel AG & Co. KGaA, Duesseldorf, DE;
Abstract
A method for adhesively bonding film-like substrates, in which a two-component polyurethane adhesive is applied to a film and then a second film is applied, a two-component polyurethane adhesive being used that consists of—a component A containing at least one prepolymer having at least two NCO groups,—a component B containing at least one polymeric or oligomeric crosslinker having at least two groups that react with NCO groups, wherein component B contains 0.05 to 5 wt. % of a low-molecular-weight compound C, which—should have a nucleophilic group that reacts with NCO groups and—contains a hydrogen-bridging group, selected from O═C—Oor O═C—C—Oor O═C—C═C—Oor protonated forms.