C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 5/00 (2006.01) C08K 5/053 (2006.01) C08K 5/15 (2006.01) C08K 5/1545 (2006.01) C08K 13/02 (2006.01)
Patent
CA 2236638
This invention relates to a composition, which comprises A) an organic polymeric material and B) a stabiliser mixture consisting b1) of .alpha.-tocopherol, b2) of a solid polyhydroxy compound selected from the group consisting of triglycerol, ditrimethylolpropane, dipentaerythritol, tripentaerythritol, D-mannitol, D-sorbitol and xylitol, or b3) of an acid-binding material or of a mixture consisting of components b2) and b3). This invention also relates to the stabiliser mixture B) as well as to its use for stabilising polymeric materials, in particular food wrappings.
L'invention concerne une composition qui comprend : A) un polymère organique et B) un mélange de stabilisateurs constitué b1) d'.alpha.-tocophérol, b2) d'un composé solide à base de polyhydroxy choisi dans le groupe formé du triglycérol, du ditriméthylolpropane, du dipentaérythritol, du tripentaérythritol, du D-mannitol, du D-sorbitol et du xylitol, ou b3) d'un composé qui peut se lier à un acide ou d'un mélange constitué des composantes b2) et b3). L'invention concerne également le mélange de stabilisateurs B), de même que son utilisation pour stabiliser des matériaux polymères, en particulier des emballages d'aliments.
Krohnke Christoph
Pitteloud Rita
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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