C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
C09J 161/20 (2006.01) B27N 3/00 (2006.01) C08L 97/02 (2006.01)
Patent
CA 2533666
The invention relates to an adhesive composition comprising a formaldehyde- containing aminoplast resin and a catalysing compound, with the catalysing compound being an acid or is able to release an acid with a pKa lower than 4 and with the formaldehyde-containing aminoplast resin having a F/(NH2)2 ratio lower than or equal to 1. The catalysing compound comprises at most 11 wt.% of an ammonium salt. The invention also relates to a process for the preparation of board material using the adhesive composition according to the invention and to the board material thus obtainable.
La présente invention concerne une composition de colle à base de résine aminoplastique au formaldéhyde et d'un composé catalyseur. Le composé catalyseur et un acide ou est capable de libérer un acide au pKa inférieur à 4. La résine aminoplastique au formaldéhyde présente un rapport F/(NH¿2?)¿2? inférieur ou égal à 1. Le composé catalyseur contient pour au maximum 11 % de sa masse un sel d'ammonium. L'invention concerne également un procédé d'élaboration d'un matériau en plaque utilisant la composition de colle selon l'invention et le matériau en plaque ainsi obtenu.
Bonekamp Karel Franciscus Hubertus
de Haas Jacob Leendert
de Keijzer Augustinus Eugene Henk
Van Benthem Rudolfus Antonius Theodorus Maria
Dsm Ip Assets B.v.
Oci Nitrogen B.v.
Smart & Biggar
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