C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 69/26 (2006.01) C08G 69/28 (2006.01)
Patent
CA 2625586
The present invention relates to novel and improved polyamides formed from meta-xylylenediamine and adipic acid with an amino end group content of less than 15 mmol/kg. Also found have been processes for preparing these polyamides from meta-xylylenediamine and adipic acid with an amino end group content of less than 15 mmol/kg, which is characterized in that salt solutions of adipic acid and m-xylylenediamine are reacted at temperatures of 80 to 300~C and a pressure of 1 to 20 bar with removal of water.
La présente invention concerne de nouveaux polyamides améliorés issus de méta-xylylènediamine et d~acide adipique présentant une teneur en groupes à extrémité amino inférieure à 15 mmol/kg. L~invention concerne également un procédé de fabrication de ces polyamides présentant une teneur en groupes à extrémité amino inférieure à 15 mmol/kg à partir de méta-xylylènediamine et d~acide adipique, ledit procédé étant caractérisé en ce qu~on utilise des solutions salines d~acide adipique et de m-xylylènediamine à une température comprise entre 80 et 300 °C et une pression comprise entre 1 et 20 bars avec élimination de l~eau.
Deininger Juergen
Gruetzner Rolf-Egbert
Liese-Sauer Thomas
Rosenau Bernhard
Strauch Joachim
Basf Se
Robic
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