Dihydropyridines as costabilizers for moulding compositions...

Details Dihydropyridines as costabilizers for moulding compositions... Dihydropyridines as costabilizers for moulding compositions...

C - Chemistry, Metallurgy

08

K

400/6511, 400/93

C08K 5/353 (2006.01) C08K 5/00 (2006.01) C08K 5/098 (2006.01) C08K 5/3432 (2006.01) C08L 27/06 (2006.01) C08L 79/02 (2006.01)

Patent

CA 2026088

ABSTRACT A stabilized thermoplastic moulding composition based on halogen-containing polymers, in particular polyvinyl chloride or copolymers thereof, comprising as primary heat stabilizers zinc compounds and polymeric stabilizers from the group of polyoxazo- lines. The composition comprises as costabilizers compounds of the formula I Image (I), in which R1 is C9-C22-alkyl, alkenyl, cyclohexyl, phenyl or substituted phenyl. The compositions using the compounds of formula I as costabilizers show improved heat stability over materials stabilized with primary stabilizers only.

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