Nitric acid hydrolysis of polyamides

Details Nitric acid hydrolysis of polyamides Nitric acid hydrolysis of polyamides

1996-08-20

1998-05-12

Burn, Brian M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

562512, C07C20962

Patent

active

057507910

ABSTRACT:
Dicarboxylic acid and diamine are recovered from polyamides by hydrolysis with nitric acid, followed by separation of the dicarboxylic acid, and hydrogenation of the nitric acid, and then recovery of the diamine.

REFERENCES:
patent: 3069465 (1962-09-01), Monet
patent: 3592854 (1971-07-01), Potts et al.
patent: 5410082 (1995-04-01), Pfirmann
patent: 5457197 (1995-10-01), Sifniades et al.

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