C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 69/00 (2006.01) C08G 69/04 (2006.01) C08G 69/26 (2006.01) C08G 69/28 (2006.01)
Patent
CA 2348057
A process for the hydrolysis of a dinitrile (e.g., adiponitrile) utilizing a dicarboxylic acid (e.g., adipic acid) as the sole catalyst followed by addition of a diamine (e.g., hexamethylenediamine) and heating to produce polymerization. Such a process is particularly useful in the production of nylon 6,6 having a low BHMT content and improved melt stability.
L'invention concerne un procédé d'hydrolyse d'un dinitrile (p. ex., adiponitrile) à l'aide d'un acide dicarboxylique (p. ex., un acide adipique) en tant qu'unique catalyseur et suivi de l'addition d'une diamine (p. ex., hexaméthylènediamine) et d'un procédé de chauffage en vue de la polymérisation. Un tel procédé est particulièrement utile dans la production de nylon 6,6 présentant une faible teneur en BHMT et faisant preuve d'une stabilité améliorée à l'état fondu.
Allen Hayes Richard
Marks David Neil
Van Eijndhoven Maria de Jesus
Bennett Jones Llp
E.i. Du Pont de Nemours And Company
Invista Technologies S.a.r.l.
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