A scavenger for aldehyde(s) and a manufacturing method of a...

Details A scavenger for aldehyde(s) and a manufacturing method of a... A scavenger for aldehyde(s) and a manufacturing method of a...

C - Chemistry, Metallurgy

09

K

C09K 3/00 (2006.01) B27K 5/00 (2006.01) C09J 161/00 (2006.01) C09J 191/06 (2006.01) A62D 3/00 (2007.01)

Patent

CA 2610163

[PROBLEMS] To provide an aldehyde capture material to be used in producing plywood by using veneers and a formaldehyde adhesive, which is not lowered in the capturing power even when the resulting plywood is subjected to surface grinding and which exerts a high capturing power for formaldehyde; a process for the production of plywood with the material; and plywood obtained by the process. [MEANS FOR SOLVING PROBLEMS] A powdery aldehyde capture material containing at least one aldehyde-capturing compound which is solid at ordinary temperatures and has the property of generating an acid gas such as sulfurous acid gas on being heated; and a process for production of plywood which comprises incorporating the above aldehyde capture material into an adhesive or veneers and producing plywood through hot pressing by the use of the adhesive and the veneers.

L'invention a pour objet une matière absorbant les aldéhydes destinée à être utilisée lorsqu'on produit un contreplaqué en utilisant des placages et un adhésif à base de formaldéhyde, laquelle ne présente pas un pouvoir d'absorption des aldéhydes réduit même lorsque le contreplaqué résultant est soumis à un meulage de finition et laquelle présente un pouvoir d'absorption élevé vis-à-vis du formaldéhyde ; un procédé pour la production de contreplaqué avec la matière ; et un contreplaqué obtenu par le procédé. L'invention concerne une matière absorbant les aldéhydes en poudre contenant au moins un composé absorbant les aldéhydes qui est solide aux températures ordinaires et a la propriété de générer un gaz acide tel que l'acide sulfureux gazeux lorsqu'il est chauffé ; et un procédé pour la production de contreplaqué lequel comprend d'incorporer la matière absorbant les aldéhydes ci-dessus dans un adhésif ou des placages et de produire le contreplaqué via un pressage à chaud en utilisant l'adhésif et les placages.

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