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:
Jan. 12, 2016
Filed:
May. 06, 2013
Tesa SE, Hamburg, DE;
Uwe Schümann, Pinneberg, DE;
Sebastian Dietze, Hamburg, DE;
Kai Ellringmann, Hamburg, DE;
Marco Kupsky, Quickborn, DE;
Thilo Dollase, Hamburg, DE;
TESA SE, Hamburg, DE;
Abstract
The invention relates to a primer, comprising a mixture dissolved or dispersed in one or more solvents, the mixture composed of a copolymer obtained through copolymerization, preferably free-radical copolymerization, of vinylcaprolactam and/or vinylpyrrolidone, and one or more of the following monomers: a) an acrylic acid ester of a linear primary alcohol containing 2 to 10 carbon atoms in the alkyl group of the alcohol, b) an acrylic acid ester of a branched, non-cyclic alcohol having 4 to 12 carbon atoms in the alkyl group of the alcohol, and c) acrylic acid; one or more organofunctional silanes; a dye or a pigment based on a metal complex or a metal oxide, wherein the metal oxide is of a spinel-type. Such primer provide reliable and excellent adhesion between pressure-sensitive adhesive tapes and hydrophilic surfaces, in particular glass, and ensures at the same time a good coloration of the primer, thereby producing an opaque primer layer.