C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 69/08 (2006.01) C08G 69/04 (2006.01)
Patent
CA 2322035
The invention relates to a method for producing polyamides by reacting amino carboxylic acid compounds of general formula (I) H2N-(CH2)m-COR1 in which R1 represents OH, O-C1-12-alkyl or NR2R3 with R2 and R3, independent of one another, representing hydrogen, C1-12-alkyl or C5-8-cycloalkyl, and m represents a whole number between 3 and 12. Said compounds are optionally reacted in the mixture with amino nitriles and the hydrolysis products thereof and are optionally reacted in the presence of water. In addition, the compounds are reacted in liquid phase while being subjected to an increased pressure and an increased temperature, and in the presence of metal oxides as heterogeneous catalysts, whereby the metal oxides are placed inside a mold which permits mechanical separation from the reaction mixture and are removed from the reaction mixture during or after completion of the polymerization.
L'invention concerne un procédé de préparation de polyamides qui s'effectue par réaction de composés d'acide aminocarboxylique de la formule (I) H¿2?N-(CH¿2?)¿m?-COR?1¿, dans laquelle R?1¿ désigne OH, O-alkyle C¿1-12? ou NR?2¿R?3¿, R?2¿ et R¿3? désignant indépendamment l'un de l'autre hydrogène, alkyle C¿1?-C¿12? ou cycloalkyle C¿5-8? et m désigne un nombre entier compris entre 3 et 12, éventuellement mélangés à des aminonitriles et leurs produits d'hydrolyse et éventuellement en présence d'eau, en phase liquide, à une pression et à une température très élevées, en présence d'oxydes métalliques comme catalyseurs hétérogènes, lesdits oxydes métalliques s'utilisant sous une forme permettant la séparation mécanique hors du mélange réactionnel et étant extraits dudit mélange réactionnel pendant ou à la fin de la polymérisation.
Hildebrandt Volker
Mohrschladt Ralf
Basf Aktiengesellschaft
Robic
LandOfFree
Method for producing polyamides from amino carboxylic acid... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for producing polyamides from amino carboxylic acid..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing polyamides from amino carboxylic acid... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-2018751