Covestro Deutschland Ag

Bayer Aktiengesellschaft

Bayer Materialscience Ag

Covestro Intellectual Property Gmbh & Co. Kg

Bayer Intellectual Property Gmbh

H.c. Starck Gmbh

Karlsruher Institut Fur Technologie

Harald Kraus

Dirk Achten

Hans-Josef Laas

Wolfgang Arndt

Matthias Wintermantel

Martin Melchiors

Jörg Büchner

Michael Mager

Dirk Dijkstra

Joerg Buechner

Peter Kueker

Robert Liberati

Wolfgang Henning

Markus Mechtel

Thomas Buesgen

Nicolas Degiorgio

Evgeny Avtomonov

Jonas Kuenzel

Pantea Nazaran

Joerg Tillack

Heinz-Werner Lucas

Moritz Urban

Heinz Pudleiner

Jan Weikard

Lothar Puppe

Stephan Kirchmeyer

Klaus Meyer

Sebastian Dörr

Udo Merker

Burkhard Köhler

Joachim Simon

Thomas Büsgen

Fabian Schuster

Lothar Stempniewski

Christoph Thiebes

Nusret Yuva

Thorsten Rische

Henricus Peerlings

Gerald Kurek

Mehmet-Cengiz Yesildag

Sebastian Doerr

Jörg Tillack

Alfred Zastrow

Ralf Werner

Reiner Witkowski

Thomas Fait

Detlef Gaiser

Ralf Rott

Jörg Buchner

Jonas Künzel

The invention relates to the use of an aqueous dispersion containing at least one polyurethane-polyurea polymer formed from (a) at least one difunctional polyester polyol having a number-average molecular weight of 400 to 5000 g/mol, (b) at least one difunctional polyol component having a number-average molecular weight of 762 to 399 g/mol, c) at least one diisocyanate and (d) at least one chain extender optionally having at least one ionic group, for the bonding of at least two substrates by application of the aqueous dispersion to at least one of the substrates to be bonded, subsequent drying of the dispersion present on the at least one substrate in order to obtain at least one adhesive layer, and contacting of the at least one adhesive layer with a further substrate or with an adhesive layer present on a further substrate at a pressure of from 0.1 to 5 bar(a) and a temperature of less than 40° C., wherein the polyurethane-polyurea polymer after the drying has a glass transition temperature Tg of from −65 to 10° C. and a melting point of from 40 to 80° C., to a corresponding process for joining at least two substrates, and to an adhesive composite obtained in this way and comprising at least two substrates and an adhesive layer present between every two substrates.

Use of dispersion adhesives for foam bonding

The present disclosure relates to an aqueous dispersion containing at least one semicrystalline polyurethane-polyurea polymer and at least one surface-deactivated polyisocyanate. The melting temperature of the semicrystalline polyurethane-polyurea polymer is at least 55° C. The disclosure also relates to a process for preparing the aqueous dispersion, the use of the aqueous dispersion for producing coated substrates or adhesive films, flat or three-dimensional substrates coated with the aqueous dispersion, a substrate coated with at least one semicrystalline polyurethane-polyurea polymer and at least one surface-deactivated polyisocyanate, an adhesive film including at least one semicrystalline polyurethane-polyurea polymer and at least one surface-deactivated polyisocyanate, and a dried adhesive film obtained from such an aqueous dispersion.

Adhesives

The invention relates to formulations of aqueous dispersion adhesives on the basis of aqueous polyurethane or polyurethane-urea dispersions and the use of the adhesive formulations for bonding foam substrates according to the spray coagulation method.

Dispersion adhesives

A method of applying a material comprising a fusible polymer comprises the step of: The fusible polymer has the following properties: wherein the filament, during the application process, has an application temperature of &#x2265;100&#xb0; C. above the melting point of the fusible polymer for &#x2264;20 minutes. There are still free NCO groups in the material including the fusible polymer.

Method for applying a material containing a meltable polymer with free NCO groups

A method of applying a material comprising a fusible polymer comprises the step of: The fusible polymer has the following properties: There are furthermore blocked NCO groups present in the material comprising the fusible polymer.

Method for applying a material containing a meltable polymer with blocked NCO groups

The invention relates to the use of aqueous dispersion adhesives on the basis of a mixture of aqueous polyurethane or polyurethane-urea dispersions for bonding foam substrates according to the spray coagulation method.

A method for reinforcing a part of a building comprises the step of adhesively bonding a textile to the surface of the part of a building by means of an adhesive. The invention relates further to such a reinforced part of a building and to the use of a textile in combination with an adhesive for reinforcing a part of a building, wherein the textile is adhesively bonded to the surface of the part of a building by means of an adhesive.

Method for reinforcing a building component

The present invention relates to novel waterborne adhesives which are polymerizable by UV light and are capable of being activated by heat, and which particularly display good adhesion to difficult substrates, such as ethylene vinyl acetate copolymers (EVA) with a low vinyl acetate content, or rubber. The invention further provides a novel method in which, after the application of the waterborne adhesive to an article and drying, irradiation with UV light and at the same time or thereafter activation by heat are performed. The adhesive film which is irradiated and activated in this way is then bonded to a further article. The invention also provides the use of the adhesives to make items such as shoes.

Waterborne polyurethane adhesive composition and method for bonding articles

An aqueous dispersion comprising at least one polyurethane polymer with a melting temperature in the range of 30&#xb0; C. to 50&#xb0; C. and (cold contact) adhesives comprising such a polyurethane dispersion, a method for creating an adhesive bonding and the use of such (cold contact) adhesives for creating an adhesive bonding.

Cold contact adhesives

The present invention relates to aqueous dispersions containing hydrophilized polycarbodiimides, methods for producing the aqueous dispersions according to the invention, their use as a constituent of binders in adhesives, lacquers, paints, paper coating compounds or in fiber nonwovens and articles made of wood, metal, textile, leather or plastic, which are treated with the aqueous dispersion according to the invention.

Carbodiimidation method

Method for the production of adhesive-coated articles, articles obtainable thereby and their use A method for the production of adhesive-coated articles comprises the steps of: (I) providing a substrate; (II) applying a first polyurethane and/or polyurethane-polyurea polymer onto the substrate, the first polyurethane and/or polyurethane-polyurea polymer being capable of attaining an at least partially crystalline state with a final degree of crystallinity and wherein during and/or after the application the first polyurethane and/or polyurethane-polyurea polymer is present in a non-crystalline state. The method further comprises the steps: (III) applying onto the first polyurethane and/or polyurethane-polyurea polymer of step (II) a composition comprising a mixture of a second polyurethane and/or polyurethane-polyurea polymer and furthermore an acrylate polymer, wherein the application is performed while the degree of crystallinity of the first polyurethane-polyurea polymer is lower than its final degree of crystallinity; and (IV) cooling the article obtained to a temperature below the glass transition temperature of the acrylate polymer.

Method for the production of adhesive-coated articles, articles obtainable thereby and their use

The invention relates to a method for producing aqueous polyurethane-polyurea dispersions, aqueous polyurethane-polyurea dispersions produced by this method and their use to produce coating agents and adhesives.

Aqueous polyurethane-polyurea dispersions

Hot-sealable coating systems and method for joining surfaces The present invention relates to a hot-sealable coating system, comprising a polyurethane and/or polyurethane-polyurea polymer (I) and an olefin vinyl acetate copolymer (II). The polyurethane and/or polyurethane-polyurea polymer (I) is obtainable by the reaction of (A) at least one diol and/or polyol component, (B) at least one di- and/or polyisocyanate component, (C) at least one component having sulphonate and/or carboxylate groups, (D) mono-, di- and/or tri-amino-functional and/or hydroxyamino-functional compounds (as appropriate), (E) other isocyanate-reactive compounds (as appropriate). The polyurethane and/or polyurethane-polyurea polymer (I) has a glass transition temperature of &#x2266;10&#xb0; C. and the olefin vinyl acetate copolymer (II) has a minimum film forming temperature (white point temperature) of &#x3e;+40&#xb0; C. The invention also relates to the use of the coating system and a method for joining surfaces in which the coating system according to the invention is used.

Hot-sealable coating systems and method for joining surfaces

The invention relates to an aqueous adhesive composition containing at least one acrylate polymer with a glass transition temperature Tg&#x3e;50&#xb0; C. and at least one amorphous polyurethane or polyurethane-polyurea polymer with a glass transition temperature Tg&#x3c;+10&#xb0; C., the use of the adhesive compositions for the manufacture of heat-activated adhesive layers, and planar formations containing adhesive layers based on the adhesive composition.

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Leverkusen, Germany

Harald Kraus