Stabilizer mixtures

Details Stabilizer mixtures Stabilizer mixtures

2006-03-28

2006-03-28

Yoon, Tae H. (Department: 1714)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S091000, C524S099000, C524S100000, C524S102000, C524S103000, C524S291000, C524S359000, C524S398000, C524S400000, C524S432000, C524S433000, C524S434000, C524S436000, C252S400100, C252S401000, C252S403000

Reexamination Certificate

active

07019053

ABSTRACT:
A stabilizer mixture containingA) for example at least one compound of the formula (I)wherein the radicals R1, independently of one another, are hydrogen, C1–C8alkyl, —O−, —CH2CN, C3–C6alkenyl, C7–C9phenylalkyl, C7–C9phenylalkyl which is substituted on the phenyl radical by C1–C4alkyl; or C1–C8acyl; andB) magnesium oxide, magnesium hydroxide, zinc oxide, zinc hydroxide or an organic salt of zinc or magnesium, or a hydrotalcite; andC) either(C1) an UV absorber or(C2) a pigment or(C3) an UV absorber and a pigment.Such a stabilizer mixture is particularly useful for stabilizing a polyolefin against light-induced degradation.

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R. Gächter and H. Müller, Plastics Additives Handbook, 3rdEd., pp. 176 and 191-192 (1990).

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