C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 101/00 (2006.01) C07D 231/08 (2006.01) C07D 403/00 (2006.01) C07D 405/00 (2006.01) C08K 5/3445 (2006.01) C08K 5/3492 (2006.01) C08L 23/00 (2006.01) C08L 57/00 (2006.01) C08L 87/00 (2006.01)
Patent
CA 2044308
A-18120/A/CHM 52 A method for stabilizing synthetic thermoplastic materials against thermal degradation Abstract of the disclosure The present inveneion relates to a novel method for stabilizing synthetic thermoplastic materials against thermal degradation, which comprises incorporating in said materials one or more compounds of the formula (I) Image (I) in which R1 is unsubstieuted or substituted phenyl, n is e.g. 1, 2 or 3, and, when n is 1, R2 is e.g. -COR3, - COOR4 or -CO-N(R5)R6 in which R3 is e.g. C4-Cl7alkyl, R4 is e.g. C4-Cl8alkyl, cyclohexyl or t-butylcyclohexyl, R5 and R6 which can be identical or different are e.g. C2-C8alkyl or cyclohexyl, and, when n is 2, R2 is e.g. -CO-R10-OC, -COO-R11-OOC- or -CONH-R12-NHCO- in which R10 is e.g. C2-C8alkylene, Rll is e.g.C4-C6alkylene and Rl2 is e.g. C4-C6alkylene, and, when n is 3, R2 is e.g. benzenetricarbonyl. Several compounds of the formula (I) are new.
Ag Ciba-Geigy
Fetherstonhaugh & Co.
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