C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
400/9026, 400/92
C08K 5/34 (2006.01) C07D 207/333 (2006.01) C07D 207/34 (2006.01) C08K 5/3415 (2006.01) C08K 5/36 (2006.01) C08L 23/28 (2006.01) C08L 27/00 (2006.01) C08L 27/04 (2006.01)
Patent
CA 1141884
Stabilisers for chlorine-containing thermoplastics Abstract Chlorine-containing thermoplastics, containing a pyrrole of the formula I Image (I) in which R1 is hydrogen, alkyl, cycloalkyl, aryl, alkoxy- carbonylmethyl, free or esterified .alpha.-hydroxyalkyl, free or esterified a-hydroxycycloalkylmethyl, free or ester- ified .alpha.-hydroxyaralkyl, alkoxymethyl, alkylthiomethyl, aryloxymethyl, arylthiomethyl, cycloalkoxymethyl, cyclo- akylthiomethyl, aralkoxymethyl, aralkylthiomethyl, alkoxy, alkylthio, cycloalkoxy, cycloalkylthio, aralkoxy, arylalkylthio, aryloxy, arylthio, halogen, mercapto, mercaptomethyl or hydroxyl, R2 is hydrogen, alkyl, cyclo- alkyl, aryl, free or esterified .alpha.-hydroxyalkyl, in which the alkyl moiety together with R1 can be alkylene, or free or esterified .alpha.-hydroxycycloalkylmethyl, free or esterified .alpha.-hydroxyaralkyl, alkoxy, cycloalkoxy, aralkoxy, aryloxy, alkylthio, cycloalkylthio, aralkylthio, arylthio, alkoxymethyl, alkylthiomethyl, aryloxymethyl, arylthio- methyl, cycloalkoxymethyl, cycloalkylthiomethyl, aralkoxy- methyl, aralkylthiomethyl, hydroxyl, cyano, free carboxyl or carboxyl in the form of a salt, or acyl, it being possible for acyl together with R1 to be -CO-alkylene, in which -CO- is bonded in the 3-position, or R2 is halogen, mercapto or mercaptomethyl, and R3 is alkyl, cycloalkyl, aralkyl, aryl, free or esterified hydroxymethyl, alkoxy- methyl, alkylthiomethyl, cycloalkoxymethyl, cycloalkyl- thiomethyl, aralkoxymethyl, arylalkylthiomethyl, aryloxy- methyl or arylthiomethyl, alkoxy, alkylthio, cycloalkoxy, cycloalkylthio, aralkoxy, aralkylthio, aryloxy, arylthio, halogen, mercapto or mercaptomethyl, or if R2 is carboxyl in the form of a salt, R3 is hydrogen and R1 is as defined, or in which R3 is hydroxyl and R1 is hydrogen, alkyl or aryl and R2 is hydrogen, alkyl, aryl or acyl, or a salt thereof.
355166
Bussing Jurgen
Friedrich Hans-Helmut
Wirth Hermann O.
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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