Polymer melt additive composition and use thereof

Details Polymer melt additive composition and use thereof Polymer melt additive composition and use thereof

C - Chemistry, Metallurgy

08

L

C08L 23/02 (2006.01) C08L 27/18 (2006.01)

Patent

CA 2565784

The present invention provides a polymer melt additive composition in the form of a powder for use as an additive in the melt processing of a host polymer, the polymer melt additive composition comprising particles of fibrillating polytetrafluoroethylene and an effective amount of a fluorothermoplast to prevent agglomeration of said particles of fibrillating polytetrafluoroethylene. It has been found that the polymer melt additive composition can improve the melt strength of a host polymer and is an easy to handle powder.

La présente invention concerne une composition en poudre que l'on ajoute à un polymère hôte chaud lors du processus de fusion. Cette composition additive comprend des particules de polytétrafluoroéthylène filbrillogène et une dose efficace d'un fluorothermoplastique destiné à empêcher l'agglomération desdites particules de polytétrafluoroéthylène filbrillogène. On a constaté que cette composition additive en poudre pour polymère en fusion permettait d'améliorer la robustesse à l'état de fusion du polymère hôte et qu'elle était facile à manipuler.

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