C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 23/12 (2006.01) C08K 5/134 (2006.01) C08K 5/372 (2006.01) C08K 5/39 (2006.01)
Patent
CA 2727464
Systems and compositions have a three component antioxidant blend for extending color and clarity of a thermo-plastic polymer. The antioxidant blend includes a zinc dithiocarbamate, a phenolic and a thioether with a weight ratio range of about 1-2: 1-2: 1-2. A loading level of the antioxidant blend is from about 0.01 wt. % to about 1 wt. % of the systems and compositions.
L'invention porte sur des systèmes et des compositions qui renferment un mélange d'antioxydants à trois composants destiné à prolonger la couleur et la clarté d'un polymère thermoplastique. Le mélange d'antioxydants comprend un dithiocarbamate de zinc, un agent phénolique et un thioéther selon des rapports en poids compris dans une plage d'environ 1-2: 1-2: 1-2. Le niveau de charge du mélange d'antioxydants est compris entre environ 0,01 % en poids et environ 1 % en poids des systèmes et compositions.
Deeth Williams Wall Llp
R.t. Vanderbilt Company Inc.
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