Stabilising composition II
AssigneeBASF SE
InventorsThomas Heidenefelder, Manfred Appel
Life of this patent
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Abstract
A stabilizer composition is described and comprises a 2-cyano-3,3-diarylacrylate, a sterically hindered monomeric amine, a sterically hindered phenol and, where appropriate, a chromane derivative and/or an organic phosphite and/or phosphonite. The stabilizer composition is particularly suitable for stabilizing thermoplastic polyurethane with respect to light, oxygen, and heat.
Claims10
A stabilizer composition comprising
- A) at least one 2-cyano-3,3-diarylacrylate of the formula I,
- where
- R1 is C1-C18-alkyl which, where appropriate, may have interruption by one or more oxygen atoms, or is C3-C8-cycloalkyl, unsubstituted or substituted, and
- R2 and R3, independently of one another, are hydrogen, C1-C12-alkyl, C1-C12-alkoxy or di(C1-C4-alkylamino);
- B) at least one amine of the formula II
- where
- R4 and R5, independently of one another, are hydrogen, C1-C4-alkyl, or C1-C12-alkoxy, and
- n is an integer from 2 to 10,
- C) at least one phenol of the formula III
- where
- R6 is C1-C20-alkoxycarbonyl-C1-C6-alkyl,
- D) where appropriate, at least one chromane derivative of the formula IV
- where R7 is a group of the formula
- and
- E) where appropriate, at least one organic phosphite and/or phosphonite.
A stabilizer mixture as claimed in any of the preceding claims, where component C) is isooctyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate.
A stabilizer mixture as claimed in any of the preceding claims, where component D) is α-tocopherol.
A stabilizer mixture as claimed in any of the preceding claims, where component E) is tris(nonylphenyl) phosphite.
The use of the stabilizer composition as claimed in any of the preceding claims for stabilizing non-living organic material with respect to exposure to light, oxygen, and heat.
Dependencies are inferred from the claim text.