| 摘要 |
The present invention discloses a stabilizing combination, mainly for PVC, which comprises: A) at least a compound of formula I: wherein R*1 and R*2 are independently alkyl of 1 to 12 carbon atoms; alkenyl of 3 to 6 carbon atoms; cycloalkyl of 5 to 8 carbon atoms which is unsubstituted or substituted by 1 to 3 alkyl groups of 1 to 4 carbon atoms; alcoxy of 1 to 4 carbon atoms, cycloalkyl of 5 to 8 carbon atoms; or hydroxy, or chlorine atoms, or phenylalkyl of 7 to 9 carbon atoms which is unsubstituted or substituted in the phenyl ring by 1 to 3 alkyl groups of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, cycloalkyl of 5 to 8 carbon atoms, or hydroxy, or chlorine atoms, and R*1 and R*2 may additionally be hydrogen and alkyl of 1 to 12 carbon atoms and Y is S or O, and B) at least a compound from the following groups: B1) perchlorate compounds, B2) glycidile compounds, B3) beta-diketones and beta-ketoesters, B4) dihydropiridines and polydihydropiridines, B5) disaccharide polyols and alcohols, B6) sterically hindered amines (tetraalkylpiperidine compounds), B7) alkali alluminosilicates (zeolites), B8) hydrotalzites, B9) alkali aluminocarbonates (dawsonites), B10) carboxylates, (bi) carbonates, or alkali hydroxides (or alkali earth), B11) antioxidants and lubricants, and B12) organotin stabilizers.
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