Akzo Nobel N.v.

Akzo Nobel Coatings International B.v.

Ingvar Lindh

Salme Pirhonen

Benyahia Nasli-Bakir

Robin Ljungar

Hans Ekblom

Sara Fäldt

The invention relates to a hardener composition for use in an amino resin based adhesive system, comprising an aliphatic alpha hydroxy- mono-, or di-, carboxylic acid, and polyvinyl alcohol. It also relates to an adhesive system and a method of gluing wooden materials.

Hardener composition, adhesive system and method of gluing

The present invention relates to a method of gluing wood based materials by providing an adhesive system onto wood based materials followed by curing, the adhesive system comprises a melaminic amino resin and a phenolic resin composition, wherein the phenolic resin composition comprises an acid and a phenolic resin. The invention also relates to an adhesive system and a stable phenolic resin composition as well as wood based products obtained by the method or through the use of the adhesive system.

Gluing wood based materials with melaminic amino resin and resorcinol or tannin resin

Method of gluing wood based materials

A method of producing formaldehyde laden layered products, the products having reduced emission of formaldehyde, of at least 2 layers, at least one of the layers being a veneer, comprising a step of treating at least one of the surfaces of said veneer, prior to bonding the layers together, with a solution comprising an ammonium salt. The invention also relates to a flooring material obtained by the method.

Method of producing formaldehyde laden layered products having reduced emission of formaldehyde

A method of producing formaldehyde laden layered products, the products having reduced emission of formaldehyde, of at least 2 layers, at least one of the layers being a board or veneer, comprising a step of treating at least one of the surfaces of said board or veneer, prior to bonding the layers together, with a solution comprising an inorganic sulphur containing salt. The invention also relates to a flooring material obtained by the method.

The present invention relates to a method of gluing wood based materials by providing an adhesive system onto wood based materials followed by curing, the adhesive system comprises a urea based amino resin and a hardener composition, wherein the hardener composition comprises an acid and a phenolic resin. The invention also relates to an adhesive system and a hardener composition as well as wood based products obtained by the method or through the use of the adhesive system.

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Bromma, Sweden

Ingvar Lindh