Bayer Aktiengesellschaft

Rudolf Hombach

Manfred Dollhausen

Walter Meckel

Hanns P Muller

Helmut Reiff

Wolfgang Henning

Richard Kopp

Artur Reischl

Heinrich Hess

Bernhard Jansen

Roland Richter

Josef Pedain

Dieter Dieterich

Gerhard Grogler

Walter Schafer

Otto Ganster

Josef Sanders

Joachim Wank

Eberhard Konig

Werner Waldenrath

Manfred Beck

Peter R Muller

Wilhelm Weber

Wolfgang Wenzel

Gunter Arend

Horst Stepanski

Wilfried Nolte

Geza Avar

Hans-Albrecht Freitag

Bernd Riberi

Knut Panskus

Dimitrios Kerimis

Horst Muller-Albrecht

Ralf Busch

Heinz Esser

Hans-Jurgen Muller

Wilfried Keller

Hans-Jurgen Pettelkau

Hans-Gerd Metzinger

Joachim Zirner

Gerhard Groglerl

Genter Hilken

Peter J Russell

Nigel G Wall

Aqueous solutions and dispersions of polyisocyanate polyaddition products containing 2 to 200 milliequivalents chemically incorporated carboxylate and/or sulfonate groups per 100 g solids and 0 to 25% by weight, based on solids, of incorporated ethylene oxide units arranged within terminal and/or lateral polyether chains, in the production of which primary and/or secondary monoamino compounds are usd, a process for their production and their use as adhesives.

Aqueous solutions and dispersions of polyisocyanate polyaddition

The invention relates to crosslinking isocyanates for polymeric adhesives containing a mixture of triisocyanatotriphenyl methane and trimerization products of 2,4-tolylene diisocyanate containing at least 50% triisocyanatomonoisocyanurate and less than 1% free tolylene diisocyanate.

Crosslinking agents for polymeric adhesives

The present invention is directed to a polyurethane-based reactive adhesive comprising A) at least one polyisocyanate, B) at least one polyol, and C) at least one polyamine C which is a polyether amine containing at least two amino groups, at least one phenyl group and recurring polyoxyalkylene units.

Polyurethane-based reactive adhesives in which the isocyanate is

Polyisocyanate preparations containing latent tin catalysts are made from an organic polyisocyanate and a reaction product of a sulfonyl isocyanate and an organic tin catalyst in which at least one tin-oxygen bond is present. The organic tin catalyst preferably contains a tin-alkoxy, tin-siloxy, distannoxane and/or tin-carboxylate group. The reaction product of a sulfonyl isocyanate with a tin-carboxylate must generate carbon dioxide during its formation. The sulfonyl isocyanate and organic tin compound are used in quantities such that at least one isocyanato-sulfonyl group is present for each tin-oxygen bond. These polyisocyanate preparation are storage stable and may be used to produce adhesives, coatings and foams.

Polyisocyanate preparations containing latent tin catalysts and a

A moisture cured adhesive comprising a reaction product of an organic polyisocyanate and an organic polyhydroxyl component which comprises at least one polyether polyol which has been modified by radical polymerization or copolymerization with an olefinically unsaturated monomer is disclosed. The reaction product is characterized in that it contains about 2.5 to about 25% by weight of free isocyanate groups and in that the proportion of polymers or copolymers present in the organic polyhydroxyl component is about 1 to about 50 weight % based on the weight of the components. The adhesive in accordance with the invention is characterized by its superior shear strength.

Adhesive and its use for producing adhesive bonds

An adhesive consisting substantially of an aqueous solution or dispersion of a polyurethane containing chemically incorporated carboxylate and/or sulphonate groups is prepared from a mixture of at least two (cyclo)-aliphatic diisocyanate and selected polyester diols based on (i) adipic acid and (ii) tetramethylenediol, hexamethylenediol or mixtures of these diols. The use of such aqueous solutions for the formation of bonds on any substrates, in particular on leather, plastics, rubber materials and/or polyvinyl chloride containing plasticizer, with the same material or with other materials is disclosed.

Adhesive and use of the adhesive for the formation of bonds

New compounds containing isocyanatophenoxy groups, corresponding to ##STR1## wherein R.sup.1 denotes a residue of a n-valent polyhydroxyl compound having a molecular weight of about 92-6000, R.sup.2 denotes hydrogen or methyl group and n denotes an integer of from 3 to 8 were found to be suitable as hardeners in the preparation of adhesives.

Aromatic polyisocyanates, their preparation and use as components for

The present invention relates to a heat curable adhesive system comprising a prepolymer (P) based on isocyanate groups and polyether segments, and at least one polyhydroxyl compound (C), and a catalyst (D) characterized in that

Heat curable adhesive system

The present invention relates to polyisocyanate compositions containing reversibly blocked catalysts for the isocyanate addition reaction, characterized in that they contain

Polyisocyanate compositions containing reversibly blocked catalysts and

The invention relates to laminates of five or six components and to their use for the production of skis, surfboards and furniture components.

Laminates

A process for the manufacture of polyester polyalcohols with amino and amide groups by the reaction of polyester polyalcohols with polyamines is characterized in that unsaturated polyester polyalcohols if necessary in admixture with saturated polyester polyalcohols are used as polyester polyalcohols, and low molecular weight, aliphatic polyamines with two primary amino groups are used as polyamines.

Polyester polyalcohols containing amino and amide groups and poly (urea)

The present invention is directed to polyisocyanate compositions containing

Polyisocyanate preparations and their use for the production of

The present invention is directed to a polyisocyanate preparation dispersible in water and having an average NCO functionality of about 2.0 to 3.5 which contains

Polyisocyanate preparation dispersible in water and their use as an

The present invention relates to aqueous solutions or dispersions of polyisocyanate polyaddition products containing from about 2 to 200 milliequivalents per 100 g of solids of chemically incorporated, ternary or quaternary ammonium groups and up to about 25%, based on solids, of incorporated ethylene oxide units present within terminally and/or laterally arranged polyether chains, characterized in that the polyisocyanate polyaddition products contain from about 20 to 95% by weight of polyester segments Q incorporated through urethane groups, wherein

Aqueous solutions or dispersions of polyisocyanate polyaddition

The present invention relates to the use of thermosetting polyurethane urea reactive adhesive compositions which are stable at ambient temperature but rapidly set at higher temperatures, wherein the adhesive comprises stabilized finely-divided polyisocyanates of retarded reactivity of which 0.1 to 25% of the NCO-groups are surface-modified and higher and/or lower molecular polyamines (optionally with polyols as additional reactive components). An important feature of these thermosetting reactive adhesive compositions is their capacity for storage at ambient temperature and their spontaneous increase in viscosity at relatively low heating temperatures which prevents the adhesive from running off during the heating period when applied to vertical surfaces.

Adhesive joining of surfaces using thermosetting polyurethane urea

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Leverkusen, Germany

Rudolf Hombach