Description
Zonyl® PTFE TE-3887 fluoropolymer resin is a negatively charged, hydrophobic colloid, con-taining approximately 60% (by total weight) of 0.05 to 0.5 µm polytetrafluoroethylene (PTFE) resin particles suspended in water. Seen as a milky white liquid, it also contains approxi-mately 6% (by weight of PTFE) of a non-ionic wetting agent and stabilizer. Viscosity at room temperature is approximately 25 cP (mPa•s). Nominal pH is 10.5.
Unlike most other grades of PTFE disper-sions, DuPont™ Zonyl® PTFE TE-3887 is based on low molecular weight PTFE. It is designed to be used as an additive in host systems in order to impart some of the unique properties of PTFE. The low molecular weight may make it unsuitable in some applications that require the physical properties of the high molecular weight grades.
When properly processed, the PTFE resin in Zonyl® PTFE TE-3887 exhibits the superior properties typical of the fluoropolymer resins: retention of properties after service at 260℃ (500℉), useful properties at –240℃ (–400℉), chemical inertness to nearly all industrial chemi-cals and solvents, and low friction and antistick surfaces. Dielectric properties are outstanding and stable with frequency and temperature. Refer to Table 1 for typical property data.

Typical uses and applications
-Additive for paints and coatings
• Provides anti-stick surfaces
• Reduces surface abrasion
• Reduces internal friction, such that application is easier
• Provides moisture protection
-De- molding
-Lubrication
cessing, or from smoking tobacco or cigarettes contaminated with Zonyl® PTFETE-3887 fluoro-polymer resin, may cause flu-like symptoms (chills, fever, sore throat) that may not occur until several hours after exposure and pass within about 24 hours. Vapors and fumes liber-ated during hot processing should be exhaust-ed completely from the work area; contamina-tion of tobacco with polymers should be avoided.
Mixtures with some finely divided metals, such as magnesium or aluminum, can be flam-mable or explosive under some conditions.
Zonyl® PTFE TE-3887 contains additives in the aqueous phase that are irritants. In case of skin contact, flush with water immediately. In case of eye contact, flush with water immedi-ately and get medical help.

Storage and handling
The dispersion particles in Zonyl® PTFE TE-3887 will settle on prolonged standing or on heating above 66℃ (150℉). They usually can be redispersed by mild agitation. Drums may be rolled or the product stirred gently just prior to use.The dispersion must be protected from freezing, which will cause irreversible settling. Ammonium hydroxide is used by DuPont to set pH to 10.5 at the time of shipment. High ambi-ent temperatures can deplete the ammonia level and reduce the pH. Declining pH eventu-ally favors bacterial growth, which causes odor The 0.2 µm (0.008 mil) average size particles are easy to disperse in waterborne systems.
Zonyl® PTFE TE-3887 can easily be mixed with other aqueous host carriers, or applied to surfaces or systems using conventional tech-niques such as spray, roll, dip or spin coating.
Typical processing temperatures are as fol-lows: application at room temperature, drying at 110℃ to 120℃, surfactant removal at 250℃ to 270℃ and eventually sintering (melting) at 360℃ to 380℃. The exact settings will depend on the particular process conditions, such as speed and loadings, on the product architecture and the equipment used.

Table 1
Typical Property Data for DuPont™ Zonyl® PTFE TE-3887
Fluoroadditive Resin

Typical properties are not suitable for specification purposes.
Decimals are indicated by a period (.)
* ASTM unless otherwise specified.

FDA compliance
Properly processed products (sintered at high temperatures common to the industry) made from Zonyl® PTFE TE-3887 resin can qualify for use in contact with food in compli-ance with FDA Regulation 21 CFR 177.1550 and the German BGA. Products made from unsin-tered dispersion do not comply.

Safety precautions
WARNING!
VAPORS CAN BE LIBERATED THAT MAY BE HAZARDOUS IF INHALED.
Before using Zonyl® PTFE TE-3887, read the Material Safety Data Sheet and the detailed information in the “Guide to the Safe Handling of Fluoropolymer Resins,” latest edition, pub-lished by the Fluoropolymers Division of The Society of the Plastics Industry or the “Safe handling of Fluoropolymer dispersions” pub-lished by the APME. These documents are available from DuPont.
Open and use containers only in well-venti-lated areas using local exhaust ventilation (LEV). Vapors and fumes liberated during hot pro-and scum. The pH should be measured and maintained between 9.5 and 10.5. Both very high and very low temperatures may be detri-mental. Dispersions must not be allowed to freeze. The optimum storage temperature range is 7–24℃ (45–77℉), with temperatures low in the range preferred. Storage at 7–32℃ (45–90℉) is acceptable within nominal shelf life for standard dispersions. If dispersions are to be stored for extended periods beyond their nominal shelf life, low-temperature storage is especially desirable because the particles are harder at lower temperatures and, therefore, are less likely to stick together as they settle. High-speed stirring, pumping, or any other vio-lent agitation must be avoided to minimize sheared particles or coagulation and to mini-mize foaming. Ideally, the dispersion should be conveyed by gravity from storage to process-ing stations.
Storage and handling areas should be clean. Keep dispersion drums closed and clean to avoid both contamination and coagulation by drying at the liquid surface. High processing temperatures will cause even very small for-eign particles to become visible or to make defects in finished products. Good housekeep-ing and careful handling are essential.

Packaging
Zonyl® PTFE TE-3887 is packaged in 30-L (8-gal) nonreturnable drums and 1000-L (263 gal) recyclable containers.

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