Basf Aktiengesellschaft

Basf Se Corporation

Hans-Joachim Fricke

Eckehardt Wistuba

Karl-Heinz Schumacher

Karl Haeberle

Oral Aydin

Gerhard Bauer

Oliver Hartz

Lothar Maempel

Burkhardt Dames

Bernd Meyer-Roscher

Andre Burghardt

Martin Jung

Hans Kast

Karl Häberle

Hans J Neumann

J&uuml;rgen Barwich

Fritz Peikert

A composition comprising an aqueous polymer dispersion, characterised in that a) the composition contains 0.001 to 0.5 mol of a photo-initiator, which causes a cross-linking reaction on irradiation with energy-rich light and b) the polymer dispersed in the dispersion has 0.0001 to 1 mol of keto or aldehyde groups, whereby the mol amounts relate to 100 g of the dispersed polymer.

UV-cross-linked laminating adhesive

Lamination adhesives

Aqueous dispersions containing a polyurethane which contains less than 0.6% by weight, based on the polyurethane, of urea groups ##STR1## are used as adhesives.

Use of aqueous polyurethane dispersions as adhesives for laminated films

An aqueous dispersion containing from 5 to 80% by weight of a copolymer A) having a glass transition temperature of from 50 to 150.degree. C. and from 95 to 20% by weight of a copolymer B) having a glass transition temperature of from -50.degree. to +50.degree. C., the glass transition temperatures of the two copolymers differing by at least 20.degree. C. at least one of the two copolymers containing from 3 to 70% by weight, based on the particular copolymer, of an ethylenically unsaturated C.sub.3 -C.sub.5 -mono- or dicarboxylic acid or of the anhydride thereof and the stated weights of the copolymers A) and B) being based on the sum of A) and B), is used as a sealable coating.

Use of aqueous dispersions as heat-seal adhesives

Layers of adhesives which are applied onto polyolefin surfaces from aqueous dispersion exhibit improved adhesion if a dicarboxylic acid dihydrazide of 2 to 10 carbon atoms and an aqueous dispersion of an adhesive polymer are applied, preferably as a mixture, onto the polyolefin surfaces which have been pretreated by corona discharge.

Adhesion of layers of adhesive which are applied onto polyolefin

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Dirmstein, Germany

Hans-Joachim Fricke