Transparent polyamides, processes for producing them, and...

Details Transparent polyamides, processes for producing them, and... Transparent polyamides, processes for producing them, and...

C - Chemistry, Metallurgy

08

G

402/239

C08G 69/26 (2006.01)

Patent

CA 1129588

- 1 - Case 3-12076/ZF0/+ Transparent polyamides, processes for producing them, and their use for the production of moulded articles Abstract of the Disclosure There are described transparent polyamides, and processes for producing them, which polyamides consist of recurring structural elements of the formula I Image (I), or of recurring structural elements of the formula II Image (II) [carbonyl groups in the structural elements (II) bound in the 1,3- and/or 1,4-position to the benzene nucleus, R1 = C1-12-alkyl, R2 = H, C1-12-alkyl, R3 = C1-12-alkyl, cycloalkyl C 4-12, aralkyl C 7/8, unsubstituted or sub- stituted aryl., R4 = H, C1-12-alkYl, C4-12 cycloalkyl, C7-8-aralkyl, or unsubstituted or substituted aryl, or R3/R4 together = C3-11-alkylene, R5/R6 independently of - 2 - one another = hydrogen or methyl, and R7/R8 together = C3-11-alkylene]. The polyamides according to the invention are suitable for producing transparent moulded articles of the widest variety, and are distinguished in particular by low water absorption, high stability to hydrolysis, and/or good dimensional stability under the action of moisture or humidity.

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