Polyamide compositions containing (hypo)phosphorous acid

Details Polyamide compositions containing (hypo)phosphorous acid Polyamide compositions containing (hypo)phosphorous acid

C - Chemistry, Metallurgy

08

K

C08K 3/32 (2006.01) C08G 69/00 (2006.01) C08K 3/00 (2006.01) C08K 3/22 (2006.01) C08K 5/13 (2006.01) C08K 5/3435 (2006.01) C08K 13/02 (2006.01) C08L 77/00 (2006.01) D01F 1/10 (2006.01) D01F 6/60 (2006.01) D01F 6/90 (2006.01)

Patent

CA 2432957

The invention concerns a method for making stabilised polyamide compositions. The stabilizer is a phosphorous stabilizer selected among phosphorous acid and hyperphosphorous acid. It is introduced before or during polymerisation of the polyamide. The use of said stabilizers enables to avoid foaming phenomena.

L'invention concerne un procédé de fabrication de compositions stabilisées à base de polyamide. Le stabilisant est un stabilisant phosphoré choisi parmi l'acide phosphoreux et l'acide hypophosphoreux. Il est introduit avant ou pendant la polymérisation du polyamide. L'utilisation de ces stabilisants permet d'éviter des phénomènes de moussage.

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