Process for producing a moulding composition or a moulding...

Details Process for producing a moulding composition or a moulding... Process for producing a moulding composition or a moulding...

C - Chemistry, Metallurgy

08

J

C08J 5/10 (2006.01) B29C 47/00 (2006.01) C08G 69/04 (2006.01) C08K 5/098 (2006.01) C08L 77/00 (2006.01) F16L 55/162 (2006.01)

Patent

CA 2735104

A polyamide moulding composition is condensed up in the melt by means of a masterbatch containing a compound having at least two carbonate units and also a polyetheramide in which at least 50% of the end groups are present as amino end groups, whereupon the melt mixture is discharged and solidified to give a moulding composition or a moulding. The product obtained has an increased amino end group content and consequently an improved hydrolysis resistance.

L'invention concerne un procédé selon lequel une matière à mouler à base de polyamide est condensée à l'état fondu au moyen d'un mélange maître contenant un composé pourvu d'au moins deux motifs carbonates et un polyétheramide dont au moins 50 % des groupes terminaux sont des groupes terminaux amino, le mélange fondu étant ensuite extrudé et solidifié pour former une matière à mouler ou une pièce moulée. Le produit obtenu présente une teneur accrue en groupes terminaux amino, ce qui améliore sa résistance à l'hydrolyse.

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