Henkel Kommanditgesellschaft Auf Aktien

Henkel Kommanditgesellschaft Auf Aktien (henkel Kgaa)

Henkel Ag & Company, Kgaa

Gerd Bolte

Guenter Henke

Thomas Huver

Andreas Ferencz

Markus Kruedenscheidt

Wolfgang Klauck

Ulrike Brueninghaus

Herbert Fischer

Hermann Kluth

Michael Krebs

Manfred Schumann

Thomas Offergeld

Dagmar Jahns

Astrid Omoruyi

Guenther Henke

Ulrike Bruninghaus

Gunter Henke

Christa Dernst-Mentges

Dagmar Plogmaker

Günter Henke

The invention relates to an adhesive containing two components A and B, whereby component A comprises both a functional group which can be polymerized by means of irradiation with UV beams as well as at least one functional group which is able to react with a compound having at least one acidic hydrogen atom and component B comprises at least two functional groups which can be polymerized by means of irradiation with UV beams or with electron beams. The adhesive is suitable for the production of composite materials and exhibits a high flexibility with a good initial bonding.

Adhesive with multistage curing and the utilization thereof during the production of composite materials

A hotmelt adhesive having a melting point of at least 40&#xb0; C. is provided which may be hardened in multiple stages and which is useful in the production of laminates. The hotmelt adhesive may contain a polymer with at least one functional group that is reactive towards a compound with an acidic hydrogen atom and with one functional group that can be polymerized by UV or electron beams, or a polymer with at least one functional group that is reactive towards a compound with an acidic hydrogen atom and with no functional group that can be polymerized by UV or electron beams. These polymers may be used in combination with a relatively low molecular compound with a functional group that can be polymerized by UV or electron beams.

Adhesive which hardens in several stages

Polyurethane prepolymers containing NCO (isocyanate) groups and having a low content of monomeric polyisocyanate, processes for their production and uses employing these prepolymers. The polyurethane prepolymers of the invention are produced from by a reaction employing monomeric polyisocyanates and polyols.

Polyurethane prepolymers comprising NCO groups and a low content of monomeric polyisocyanate

An isocyanate bonding agent which has a low content of highly volitile residual monomers which forms little migrate and has improved lubricant adhesion is provided. The bonding agent comprises prepolymers having isocyanate groups of different reactivities or the reaction products thereof.

Monomer-poor polyurethane bonding agent having an improved lubricant adhesion

A low-monomer PU prepolymer containing free NCO groups which is obtained from polyhydric alcohols and diisocyanates differing in their reactivity and which is distinguished by the ratio of the NCO groups of the partly slower-reacting diisocyanate to the NCO groups of the faster-reacting diisocyanate. It is greater than 6:1. Nevertheless the prepolymer according to the invention cures more quickly than a known prepolymer predominantly containing fast-reacting NCO groups. In a preferred embodiment, TDI is used as the partly slower-reacting diisocyanate while MDI is used as the faster-reacting diisocyanate. The prepolymer is produced in two stages. The prepolymer according to the invention is suitable for bonding plastic articles, metals and paper, especially films. The accelerated absence of migration is particularly noticeable in this regard.

Low monomer polyurethane prepolymer and process therefore

An adhesive useful in making composites includes two components A and B. Component A includes at least one polymer having a molecular weight (M ) of at least 800 that has at least one functional group polymerizable by irradiation with UV light or with electron beams and has at least one functional group capable of reacting with a compound having at least one acidic hydrogen atom. Component B includes at least one compound having a molecular weight (M ) of from about 100 to about 8000 which has at least two functional groups polymerizable by irradiation with UV light or with electron beams.

Polyurethane compositions with a low content of monomeric diisocyanates

Thermally crosslinkable heat-sealing adhesive

One-component reactive adhesive

Dispersion-based heat-sealable coating

Growing community of inventors

Monheim, Germany

Gerd Bolte