A novel class of organosoluble and light-colored fluorinated polyamides derived from 2,2 '-bis(4-amino-2-trifluoromethylphenoxy)biphenyl or 2,2 '-bis(4-amino-2-trifluoromethylphenoxy)-1,1 '-binaphthyl

[[abstract]]Two series of novel fluorinated aromatic polyamides were prepared from 2,2'-bis(4-amino-2-trifluoromethylphenoxy)biphenyl (2) and 2,2'-bis(4-amino-2-trifluoromethylphenoxy)-1,1'-binaphthyl (4) with various aromatic dicarboxylic acids using the phosphorylation polycondensation technique. The polyamides had inherent viscosities ranging from 0.43 to 0.62 dl/g and 0.36 to 0.74 dl/g, respectively. All the fluorinated polyamides were soluble in many polar organic solvents such as N,N-dimethylacetamide (DMAc), N-methyl-2-pyrrolidinone, and afforded transparent, light-colored, and flexible films upon casting from DMAc solvent. These polyamides showed glass-transition temperatures in the ranges of 190-240degreesC (for the 6 series from diamine 2) and 247-255degreesC (for the 7 series from diamine 4) by differential scanning calorimetry, softening temperatures in the ranges of 196-230degreesC (6 series) and 241-291degreesC (7 series) by thermomechanical analysis, and decomposition temperatures for 10% weight loss above 420degreesC in both nitrogen and air atmospheres. (C) 2004 Elsevier Ltd. All rights reserved.[[note]]SC