Dynamar - FKM - Dyneon

Kunststoffe international, 2005-11-21, Exhibition Preview: North American and Canadian Products at K 2004
...ta, is showing two new fluoropolymer processing-aid concentrates that are designed for use at very low levels to cut cost. FX 0914 X and FX 5922 X are the latest additions to the company’s Dynamar family of polymer processing aids (PPAs) that reportedly reduce cycle times, eliminate melt fracture, reduce extruder torque, and reduce die build-up in a wide range of polyolefins and other thermoplastics. The two new PPA concentrates are also said to reduce viscosity, giving processors the option of ...

Kunststoffe international, 2005-11-21, Fluoropolymer Prevents Flow Instabilities
... known as "sharkskin", to full-blown fissuring of the extrudate. The occurrence of flow instabilities at high throughputs limits the production speed and is therefore undesirable. Good results have been obtained when a fluoropolymer (grade: Dynamar, manufacturer: Dyneon) is incorporated in the melt. Added in small quantities, it lowers the extrusion pressure after a relatively short time and creates a smooth, homogeneous surface again. Such fluoropolymers are already being used in certai...

Kunststoffe international, 2005-11-21, HALS Light Stabiliser: Light Stabilisation and More
... die and so leads to melt fracture. For the test surface, discs made from the X35CrMo17 steel normally employed in die manufacture were used. These discs were not polished and so the cut edges were still visible. The processing aid used was Dynamar FX 5920 A (manufacturer: Dyneon). This was dissolved at a concentration of 0.5% in tetrahydrofuran (THF). The different HALS stabilisers were also dissolved at a concentration of 0.5% in THF in the presence of 0.5% PPA. The test specimens were placed...

Kunststoffe international, 2006-04-25, TPU Processing Aids: Polyethylene Extrusion without Melt Fracture
...ious melt instabilities. They cannot therefore be processed without the addition of polymer processing aids (PPA). Until recently the only PPA on the market for use in processing PE were fluorinated products (e.g. Viton from DuPont-Dow Elastomers, Dynamar from Dyneon and Kynar from Arkema). These processing aids achieve processing improvements and better-quality end products. Because of their advantages, fluorinated PPA are used, despite their high price, in the production of blown films, cast f...