Viton FreeFlow - Z100 & Z110 - Processing Aid for Polyolefins Datasheet

Technical Information • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Rev. 3, February 2008 Viton® FreeFlow™ Z100 and Z110 Description Viton FreeFlow® ™ Z100 and Z110 are process aids for polyolefins that reduce or eliminate melt fracture, lower extrusion pressure, reduce amperage and torque, and reduce die buildup. The two products differ only in the viscosity of the fluoroelastomer component. Both Z100 and Z110 take advantage of proprietary large-particle technology to provide a highly efficient process aid that performs effectively under a wide variety of extruder conditions, and with formulations that cause other process aids to function marginally. Z100 and Z110 combine high viscosity fluoroelastomer with polyethylene glycol (PEG) as an interfacial agent to control the fluoroelastomer particle size delivered to the die. The resulting large particles of fluoroelastomer coat internal die surfaces more quickly, and with lower dosage levels, than do conventional process aids. Z100 is best suited for the most aggressive mixing situations, such as: • Direct dosage during production of gas phase LLDPE (1.0 MI or less) • Low concentration masterbatches (typically, less than 2% process aid) in LLDPE carrier (5 MI or less) • Blown film extrusion using fractional MI LLDPE, particularly with high pigment or anti-block loadings • Extrusion under conditions that promote mixing, such as high backpressure (from narrow die gaps or tight screenpacks), or high shear screw elements (e.g., Maddock tips). Z110 is best suited for applications involving moderate mixing conditions, such as: • Dosage during production of solution LLDPE (either direct or via masterbatch) • High concentration masterbatches (typically, more than 2% process aid), particularly with LDPE carrier • Blown film using 1 to 3 MI LLDPE, or LL/LD blends containing more than 30% LD • Extrusion under low shear mixing conditions Both Z100 and Z110 can typically reduce PEG levels in films by a factor of 3 as compared to conventional PEG-based process aids, resulting from both the overall lower PPA dosing level and relatively low PEG content in the Z100/Z110. Reducing PEG levels in film can minimize surface contamination that can lead to printing or sealing problems. Advantages • Improved rates of conditioning during start-up of new formulations on clean dies or purged systems • Improved performance on difficult lines where other process aids require high levels • Improved additive efficiency particularly on lines where frequent formula changes are made or in formulas containing multiple additives • Improved economics • Extended running time between die cleanings • Approved for food contact and potable water appliances Formulation Guidelines To assist in resin formulation, the following can be used as a general guide: Elimination of Sharkskin Melt Fracture In standard film resins, ppm 400–600 In heavily filled or pigmented film, ppm 600–1,000 Reduction of die buildup, ppm 100–200 Levels are parts per million Viton® FreeFlow™ Z100 or Z110 These numbers are starting points for formulation. The actual level required depends on many factors. Typical Physical Properties Appearance White, free-flowing powder Packaging 20 kg bag in box custom bulk packaging upon request Shelf Life, yr 4* * Normal storage conditions—dry, unopened, temperature below 27°C (80°F) Safety and Handling Viton FreeFlow® ™ Z100 and Z110 are considered safe materials to handle. They are stable at the temperatures at which polyolefins are formulated and processed. However, prior to the use of Viton® FreeFlow™ Z100 or Z110 in polyolefins, review the Material Safety Data Sheet (MSDS) and follow the recommendations in DuPont Performance Elastomers bulletin “Handling Precautions for Viton® and Related Chemicals.” For further information please contact one of the addresses below, or visit us at our website at www.dupontelastomers.com/viton European Headquarters — Geneva Global Headquarters — Wilmington, DE USA Tel. +41-22-717-4000 Tel. +1-800-853-5515 Fax +41-22-717-4001 +1-302-792-4000 Fax +1-302-792-4450 South & Central America Headquarters — Brazil Asia Pacific Headquarters — Singapore Tel. +55-11-4166-8978 Tel. +65-6275-9383 Fax +55-11-4166-8989 Fax +65-6275-9395 Japan Headquarters — Tokyo Tel. +81-3-6402-6300 Fax +81-3-6402-6301 The information set forth herein is furnished free of charge and is based on technical data that DuPont Performance Elastomers believes to be reliable. It is intended for use by persons having technical skill, at their own discretion and risk. Handling precaution information is given with the understanding that those using it will satisfy themselves that their particular conditions of use present no health or safety hazards. Since conditions of product use and disposal are outside of our control, we make no warranties, express orimplied, and assume no liability in connection with any use of this information. As with any material, evaluation of any compound under end-use conditions prior to specification is essential. Nothing herein is to be taken as a license to operate or a recommendation to infringe on any patents. While the information presented here is accurate at the time of publication, specifications can change. Check www.dupontelastomers.com for the most up-to-date information. CAUTION: Do not use in medical applications involving permanent implantation in the human body. For other medical applications, discuss with your DuPont PerformanceElastomers customer service representative and read Medical Caution Statement H-69237. DuPont™ is a trademark of DuPont and its affiliates. Viton® and Viton® FreeFlow™ are trademarks or registered trademarks of DuPont Performance Elastomers. Copyright © 2007 DuPont Performance Elastomers L.L.C. All rights reserved. (07/02) Printed in U.S.A. Reorder no: VFE-A10059-00-D0208