C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
400/7097, 260/47
C07C 219/04 (2006.01) C07C 229/12 (2006.01) C07C 239/18 (2006.01) C08K 5/17 (2006.01) C08K 5/32 (2006.01) C09K 15/20 (2006.01)
Patent
CA 1321602
316249/=/CGC 1243 N,N-Bis(hydroxyethyl)hydroxylamine ester stabilizers Abstract Compounds of formula I Image (I) wherein each R is alkyl of 1 to 36 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, phenyl, phenyl substituted by alkyl of 1 to 36 carbon atoms, aralkyl of 7 to 9 carbon atoms, said aralkyl substi- tuted by alkyl of l to 36 carbon atoms, or is Image (II) wherein R1 and R2 are independently alkyl of 1 to 18 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, phenyl or aralkyl of 7 to 9 carbon atoms, and n is 0, 1 or 2; and X is hydroxyl or -CH2CH(R4)?-OR3 wherein R3 is alkyl of 1 to 36 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, phenyl, phenyl substituted by alkyl of 1 to 36 carbon atoms, aralkyl of 7 to 9 carbon atoms or said aralkyl substituted by alkyl of 1 to 36 carbon atoms, and R4 is hydrogen or methyl, are effective in stabilizing various organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as color improvers and process stabilizers in synthetic polymers containing phenolic antioxidants and/or metal salts of fatty acids.
555064
Ravichandran Ramanathan
Seltzer Raymond
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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