Stabiliser combinations for chlorine-containing polymers

Details Stabiliser combinations for chlorine-containing polymers Stabiliser combinations for chlorine-containing polymers

C - Chemistry, Metallurgy

08

K

C08K 5/3462 (2006.01) C08K 13/02 (2006.01) C08L 27/04 (2006.01) C08L 27/06 (2006.01)

Patent

CA 2526879

A stabiliser combination, mainly for PVC, is described, comprising A) at least one compound of formula I (see formula I) wherein R*1 and R*2 are each independently of the other C1-Cl2alkyl, C3- C6lkenyl, C5-C8cycloalkyl that is unsubstituted or substituted by from 1 to 3 C1-C4alkyl, C1-C4alkoxy, C5-C8cycloalkyl or by hydroxy groups or by chlorine atoms, or C7-C9phenylalkyl that is unsubstituted or substituted at the phenyl ring by from 1 to 3 C1-C4alkyl, C1-C4alkoxy, C5-C8cycloalkyl or by hydroxy groups or chlorine atoms, and R*1 and R*2 may additionally be hydrogen and C1-C12alkyl, and Y is S or O,and B) at least one compound from the following groups: B1) perchlorate compounds, B2) glycidyl compounds, B3) beta-diketones and beta-keto esters, B4) dihydropyridines and polydihydropyridines, B5) polyols and disaccharide alcohols, B6) sterically hindered amines (tetraalkylpiperidine compounds), B7) alkali aluminosilicates (zeolites), B8) hydrotalcites, B9) alkali aluminocarbonates (dawsonites), B10) alkali- (or alkaline earth-) carboxylates,-(bi)carbonates or -hydroxides, B11) antioxidants and lubricants and B12) organotin stabilisers.

On décrit une combinaison stabilisatrice, principalement pour le PVC, comprenant a) au moins un composé de la formule I (voir formule I) dans laquelle R*1 et R*2 sont chacun indépendamment C1-C12alkyle, C3-C6alcényle, C5-C8cycloalkyle qui est non substitué ou substitué par 1 à 3 C1- C4alkyle, C1-C4alkoxy, C5-C8cycloalkyl ou par des groupes hydroxy ou par des atomes de chlore, ou un C7-C9phénylalkyle qui est non substitué ou substitué dans le cycle phényle par 1 à 3 C1-C4alkyle, C1-C4alkoxy, C5-C8cycloalkyl ou par des groupes hydroxy ou des atomes de chlore, et R*1 et R*2 peuvent en outre être un hydrogène et un C1-C12alkyle, et Y représente S ou O, et B) au moins un composé parmi les groupes suivants : B1) composés de perchlorate, B2) composés glycidyle, B3 ) beta-dicétones et beta-céto-esters, B4) dihydropyridines et polydihydropyridines, B5 ) polyols et alcools de disaccharide, B6) amines à encombrement stérique (composés de tétraalkylpipéridine), B7) aluminosilicates alcalins (zéolithes), B8) hydrotalcites, B9) aluminocarbonates alcalins (dawsonites), B10) carboxylates alcalins (ou alcalino-terreux),-(bi)carbonates ou -hydroxides, b11) des antioxydants et des lubrifiants et B12) des stabilisants organostanniques.

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