Catalytic production of aromatic polyamides from high purity mon

Details Catalytic production of aromatic polyamides from high purity mon Catalytic production of aromatic polyamides from high purity mon

1990-01-31

1990-12-25

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

524414, 524606, 528126, 528179, 528183, 528337, 528348, C08G 6928

Patent

active

049804510

ABSTRACT:
Aromatic polyamides having an improved resistance against thermal oxidation, are produced by utilizing monomers having a very high degree of purity, at least 99.90% by weight, preferably, at least 99.94%.

REFERENCES:
patent: 3932364 (1976-01-01), Yamazaki et al.
patent: 4720538 (1988-01-01), Bartmann
patent: 4749768 (1988-06-01), Finke et al.

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