C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
400/7087, 400/94
C07D 211/58 (2006.01) C07D 401/14 (2006.01) C07D 405/14 (2006.01) C08K 5/34 (2006.01) C08K 5/3435 (2006.01) C08L 23/12 (2006.01) C08L 57/00 (2006.01) C08L 87/00 (2006.01) C08L 93/00 (2006.01)
Patent
CA 2030902
N,N'-HYDROCARBYLENEBIS (N-HALS-SUBSTITUTED AMIC ACID HYDRAZIDES) AND THEIR DERIVATIVES Abstract of Disclosure N,N'-hydrocarbylenebis [N-(2,2,6,6- tetraalkyl-4-piperidinyl)amic acid hydrazides] and their derivatives are useful for stabilizing polymeric systems which are subject to degradation and/or discoloration upon exposure to heat and/or light. The novel compounds contain at least two hindered amine light stabilizing groups and two hydrazide or hydrazide derivative thermal oxidative stabilizing groups. The novel compounds are excellent light stabilizers for polyolefins, have low volatility and are not readily lost from polymeric systems via volatilization, migration or extraction.
Atochem North America Inc.
Borden Ladner Gervais Llp
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