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Aqueous Dispersions

DuPont™ Teflon® aqueous dispersions are milky white dispersions of PTFE particles in water, stabilized by wetting agents. They can be further formulated to meet specific needs by adding other solid or liquid ingredients. These aqueous dispersions offer a practical method for coating or impregnating using a resin that does not respond to traditional solvent or melt-processing techniques.


What's New in Teflon® Dispersions ...
Using new polymer technology and a cleaner, more effective new wetting agent, DuPont introduces a new generation of high-performance Teflon® PTFE dispersion products.

Processing
Yard goods made from Teflon® aqueous dispersions can be dip-coated with repeated passes until the final desired thickness is obtained. The water is then removed and the other ingredients deactivated. The dried resin particles can be coalesced by heat into a continuous coating or the substrate can remain coated, or impregnated, with unmelted particles. Both glass fabric and synthetic substrates can be processed.

Grades, Characteristics, and Applications
Teflon® PTFE 

Standard
Grade

Resin
Characteristics


Applications

TE3859
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TE3893
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General-purpose resin composed of 60% PTFE dispersed in water. Contains a nonionic wetting agent and stabilizer. General use; Impregnation; Glasscloth and other fabric coatings; base coat, anti-drip, binder 
TE3864
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TE3864 replaces Teflon® PTFE B; aqueous dispersion containg 61%, by total weight, of active ingredients. Special formulation designed for application to woven glass fabric used to make bags for difficult gaseous filtration or product collection systems. Excellent hydrophobisity and chemical resistance. Filtration; Glasscloth 
TE3875
[.pdf]


TE3876
[.pdf]

Good gloss, high shear stability and good weldability; improved abrasion resistance, flex-life and color. 60%  PTFE dispersed in water. Contains a nonionic wetting agent and stabilizer. Impregnation; metal  and fabric coating
TE3885
[.pdf]


TE3908
[.pdf]
 
Resin composed of approximately  61% PTFE dispersed in water. Contains a nonionic wetting agent and stabilizer. Fabric coating (high temperature substrates, glass, aramid such as Kevlar®, Nomex® cloth); conveyor belts, arcitectural, welding equipment, tapes/sheets, customised parts 
TE3890
[.pdf]
 
Resin composed of nominal 35% PTFE dispersed in water with an anionic wetting agent. For co-coagulation purpose, such as filled bearings