Aliphatic polyamides

Details Aliphatic polyamides Aliphatic polyamides

C - Chemistry, Metallurgy

08

G

402/234

C08G 69/26 (2006.01)

Patent

CA 1120192

Case 3-11407/ZFO/+ Canada ALIPHATIC POLYAMIDES Abstract of the Disclosure The polyamides according to the invention are mainly transparent (amorphous), but in some cases also partially crystalline. They have a reduced specific viscosity (0.5 % in m-cresol at 25°C) of at least 0.3 dl/g, and consist of recurring structural elements of the formula I Image (I) in which R1 and R2 are monovalent aliphatic or cyclo- aliphatic radicals, and Z is a bivalent aliphatic radical. The dicarboxylic acid structural radicals are derived in particular from adipic acid. The polyamides have high glass transition temperatures, and have a low water absorption and also good stability to hydrolysis. They can be processed into moulded articles (for example by the injection moulding process and extrusion process).

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