Carbon black reheat additive for polyester and polypropylene

Details Carbon black reheat additive for polyester and polypropylene Carbon black reheat additive for polyester and polypropylene

C - Chemistry, Metallurgy

08

K

C08K 3/04 (2006.01) B29C 49/06 (2006.01) B29C 49/08 (2006.01) B29C 51/10 (2006.01) B29C 51/42 (2006.01) C08L 23/10 (2006.01) C08L 67/02 (2006.01)

Patent

CA 2585932

Reheat characteristics of polyethylene and polypropylene resins, including reheating time and resin color, are improved by adding to the resin carbon black with a primary particle size in the range of 200 to 500 nm as an infrared absorber. Thermal carbon blacks having this primary particle size are preferred over Furnace carbon blacks. Injection stretch-blow molded bottles and other thermoformed products are made from resins with carbon black infrared absorber.

Les caractéristiques de postcombustion de résines polyéthylène et polypropylène, y compris le temps de postcombustion et la couleur de la résine, sont améliorées par addition de noir de carbone à la résine en tant qu~absorbant infrarouge. La granulométrie dudit noir de carbone doit être comprise entre 200 et 500 nm. Les noirs thermiques présentant cette granulométrie sont préférés aux noirs de fourneau. Des bouteilles moulées par injection-soufflage, ainsi que d~autres produits thermoformés, peuvent être fabriqués à partir de résines comportant un absorbant infrarouge de type noir de carbone.

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