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:
May. 13, 2014
Filed:
Dec. 15, 2010
Karl-heinz Schumacher, Neustadt, DE;
Florian Büsch, Speyer, DE;
Dieter Urban, Speyer, DE;
Cornelis Petrus Beyers, Altrip, DE;
Karl-Heinz Schumacher, Neustadt, DE;
Florian Büsch, Speyer, DE;
Dieter Urban, Speyer, DE;
Cornelis Petrus Beyers, Altrip, DE;
BASF SE, Ludwigshafen, DE;
Abstract
Described is a recloseable pack having a cold-sealed layer of adhesive which is recloseable after the pack has been opened, the layer of adhesive comprising an emulsion polymer composed to an extent of at least 60% by weight of principal monomers selected from the group consisting of C1 to C20 alkyl (meth)acrylates, vinyl esters of carboxylic acids comprising up to 20 C atoms, vinylaromatics having up to 20 C atoms, ethylenically unsaturated nitriles, vinyl halides, vinyl ethers of alcohols comprising 1 to 10 C atoms, aliphatic hydrocarbons having 2 to 8 C atoms and one or two double bonds, and mixtures of these monomers, the emulsion polymer being preparable by emulsion polymerization of free-radically polymerizable monomers in the presence of at least one protective colloid. Also described are aqueous polymer dispersions suitable for producing the pack of the invention, and polymer films coated with the polymer dispersions.