Catalyzed synthesis of aramid from carbon monoxide, aromatic dic

Details Catalyzed synthesis of aramid from carbon monoxide, aromatic dic Catalyzed synthesis of aramid from carbon monoxide, aromatic dic

1996-12-20

1998-08-04

Hampton-Hightower, P.

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

Synthetic resins

From carboxylic acid or derivative thereof

528392, 528422, 528491, 528492, 525539, C08G 6908, C08G 7310, C08G 6702

Patent

active

057895309

ABSTRACT:
The synthesis of an aramid by the catalyzed reaction of carbon monoxide, an aromatic dichloride, such as 1,4-dichlorobenzene, and a diamine, such as 1,4-diaminobenzene, is disclosed. The reaction may be catalyzed by palladium (II) and palladium (0)-containing catalysts with chelating trialkyl phosphines, such as bis(diisopropylphosphino)-propane.

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patent: 5214127 (1993-05-01), Perry et al.
patent: 5521281 (1996-05-01), Sen et al.
patent: 5672750 (1997-09-01), Perry
R.J. Perry, "Making Aramids Using CO and Palladium Catalysis", Chemtech, Feb. 1994, pp. 18-23.
Y. Ben-David et al., "Chelate-Assisted, Pd-Catalyzed Efficient Carbonylation of Aryl Chlorides", J. Am. Chem. Soc., vol. 111, No. 23, 1989, pp. 8742-8744.
R.J. Perry et al., "Palladium-Mediated Carbonylation and Coupling Reactions of Iodobenzene and Aniline. Model Reactions for the Preparation of Aromatic Polyamides", Macromolecules 1993, 26, 1503-1508.
S.R. Turner et al., "High Molecular Weight Aromatic Polyamides from Aromatic Diiodides and Diamines", Macromolecules 1992, 25, 4819-4820.
Y. Imai, "A Flexible Route to Carbon-Carbon Polymers", Chemtech, Sep. 1991, pp. 560-564.

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