Process of making press molded materials using heat...

Details Process of making press molded materials using heat... Process of making press molded materials using heat...

C - Chemistry, Metallurgy

08

G

C08G 18/18 (2006.01) B05D 3/02 (2006.01) B05D 3/12 (2006.01)

Patent

CA 2524260

This invention concerns a process for the manufacture of a press molded material, comprising applying diisocyanate, polyol, and catalyst to a wood material, wherein the catalyst is a tertiary amine-carboxylic acid salt that is blocked at room temperature and becomes unblocked at an elevated temperature, and heating the resulting mixture to a temperature effective to unblock the salt to produce unblocked tertiary amine. The press molded material can be an orientated strand board (OSB).

L'invention se rapporte à un procédé de fabrication d'un matériau moulé par pressage, consistant à appliquer du diisocyanate, du polyol et un catalyseur sur un matériau en bois, le catalyseur étant un sel d'acide carboxylique aminé tertiaire qui est bloqué à température ambiante et se débloque à une température élevée, et à chauffer le mélange obtenu à une température suffisante pour débloquer le sel afin de produire une amine tertiaire. Le matériau moulé par pressage peut être un panneau OSB.

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