Method of gluing wood based materials
AssigneeAkzo Nobel N.V.
InventorsSalme Pirhonen, Benyahia Nasli-Bakir, Ingvar Lindh
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Abstract
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.
Claims39
A method of gluing wood based materials by providing an adhesive system onto wood based materials followed by curing, the adhesive system comprising a urea based amino resin and a hardener composition, wherein the hardener composition comprises an acid, and a phenolic resin which is a resorcinol resin or a tannin resin, or a mixture thereof.
A method of gluing wood based materials by providing an adhesive system onto wood based materials followed by curing, the adhesive system comprising a urea based amino resin and a hardener composition, wherein the hardener composition comprises an acid, and a phenolic resin, the molar ratio aldehyde to amino compound used when making the urea based amino resin is less than 2.4.
A method of gluing wood based materials by providing an adhesive system onto wood based materials followed by curing, the adhesive system comprising a urea based amino resin and a hardener composition, wherein the hardener composition comprises an acid, and a phenolic resin, the adhesive system is provided by separately applying the amino resin and the hardener composition onto the wood based materials.
An adhesive system comprising a urea based amino resin and a hardener composition, wherein the hardener composition comprises an acid, and a phenolic resin, the molar ratio aldehyde to amino compound used when making the urea based amino resin is less than 2.4.
A stable hardener composition for an amino resin based adhesive system, the hardener composition comprises an acid, and a phenolic resin, which is a resorcinol resin or a tannin resin, or a mixture thereof.
A wood based product obtained by gluing wood based materials by providing an adhesive system onto wood based materials followed by curing, the adhesive system comprising a urea based amino resin and a hardener composition, wherein the hardener composition comprises an acid, and a phenolic resin which is a resorcinol resin or a tannin resin, or a mixture thereof.
Dependencies are inferred from the claim text.