Preparation of polyamides from unstable diamines

Details Preparation of polyamides from unstable diamines Preparation of polyamides from unstable diamines

C - Chemistry, Metallurgy

08

G

402/238

C08G 69/32 (2006.01) C08G 69/26 (2006.01) C08G 69/28 (2006.01)

Patent

CA 2037802

-6- A method is described for preparing high molecular weight polyamides comprising forming a slurry of the dihydrochloride of (see formula) where X is C1, Br or lower alkyl (1-6 C atoms), and y is C1, Br, lower alkyl (1-6 C atoms) or hydrogen in a solvent for the diamine, reacting the dihydrochloride with a tertiary amine in an amount at least equivalent to the HC1 of the dihydrochloride to form free diamine in solution and treating the solution with an aromatic diacid chloride to form the polaymide.

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