Discoloration-free heat-stabilized polyamides

Details Discoloration-free heat-stabilized polyamides Discoloration-free heat-stabilized polyamides

C - Chemistry, Metallurgy

08

K

400/5801, 400/78

C08K 5/18 (2006.01) C08L 77/00 (2006.01)

Patent

CA 1206292

ABSTRACT OF THE DISCLOSURE Stabilised polyamides containing from 0.02 to 5%, by weight of a diphenylamine compound corresponding to the following general formula: Image (I) wherein R1 and R3, which may be the same or different, represent hydrogen, a CH3-, C2H5- or isopropyl group and R3 is in the o-, m- or p-position to the N-atom substitution; R2 represents hydrogen, a C4-Cl2 alkyl, C7-C12 aralkyl or C5-C12 cycloalkyl group and is in the o-, or p-position to the N-atom substitution; n represents an integer of from l to 29; and Y represents C4-C12 alkylene, C7-C12 aralkylene or C5-C12 cycloalkylene or up to 50 mole percent of -S-, -CH2-S-CH2-, -CH2-O-CH- or > CH-R4, wherein R4 represents H, C1-C6 alkyl or C5 or C6 cycloalkyl, and may be in the o- or p- position to the N-atom substitution.

417671

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