Quality and Service Since 1955

PTFE RELEASE AGENTS

Miller-Stephenson PTFE Release Agents and Dry Lubricants offer high quality, value and purity. In this day of dynamic product development, Miller-Stephenson has remained consistent, providing alternatives which meet today’s rapidly changing needs while maintaining a bridge to formulations of the past. During this multi-decade transition from chlorofluorocarbon carriers to friendlier ozone-impact solutions, Miller-Stephenson continues to provide its customers with a wide selection of alternative products in both aerosol and bulk liquid form. We offer the best products currently available and continue to remain focused on the future. Meanwhile, we shall not lose sight of our never-ending objective of providing our customers with the quality products and services they have come to expect.

PTFE - The Mainstay

PTFE (Polytetrafluoroethylene) has been the active ingredient in our Release Agent/Dry Lubricant formulations for many years. Except for manufacturing adjustments involving ozone friendly processes, PTFE has remained virtually the same and continues to be the premier release agent solution. The PTFE, in Miller- Stephenson formulations, provides suspensions of low molecular weight fluoropolymers in a variety of easy to use forms. PTFE’s outstanding lubricity and low coefficient of friction make Miller-Stephenson products not only ideal for mold release applications but also for dry lubrication.

Thermal Stability: PTFE has excellent high temperature properties up to 580°F/304°C. It can be heated above its melting point before appreciable decomposition begins. PTFE contains a range of molecular weights. Prolonged heating can cause sublimation of the lower molecular weight fractions with accompanying weight loss. The actual sublimation rate is dependent on temperature, area, and air flow. (For extreme high temperature 1562ºF/850ºC see Boron Nitride Release Agents.)
Chemical Stability: PTFE displays excellent chemical stability. It is completely resistant to concentrated nitric acid, concentrated hydrochloric acid, 30% aqueous sodium hydroxide, and 30% alcoholic potassium hydroxide at temperatures of 212°F/100°C. Concentrated sulfuric acid attacks the fluorotelomer at 212°F/100°C but has no effect at room temperature.
Solubility: PTFE is essentially insoluble in all nonfluorinated solvents. Since PTFE consists of a range of molecular weights, approximately 10% of the lowest molecular weight fractions are soluble in fluorinated solvents.

Why Miller-Stephenson?

Our products, with PTFE, provide distinct advantages not available from other formulations.

MULTIPLE RELEASES: Miller-Stephenson mold release agents work longer, yielding more release cycles from each application. This results in higher productivity.
NO MIGRATION: These release agents contain no silicones which can show up unexpectedly as oily residue in other work areas.
MINIMAL TRANSFER: Transfer of mold release to molded parts is negligible, minimizing interference with post finishing operations such as painting, bonding or metalizing.
NO OILS OR WAXES: There is no gumming or charring; therefore, no need for harsh scraping and cleaning which can shorten mold life.
NONFLAMMABLE.

Properties of PTFE

	MS-122, MS-143 Series	MS-136W, MS-145W
Molecular Weight	3,000	40,000
Density (grs/cc)	---	2.16
Particle Size (microns):
Mean	3.7	Less than 0.2
Range	1 to 15	---
Melting Point	581°F/305°C	613°F/323°C

Material Selection Chart

	Product	Release Agent on Metal Molds	Release Agents on Non Metalic Molds	Release Agents on Rubber Molds
Aerosols	MS-122AD	Recommended	Recommended	Highly Recommended
	MS-122ADL	Recommended	Recommended	Highly Recommended
	MS-122E	Recommended	Recommended	Recommended
	MS-122XD	Recommended	Recommended	Recommended
Bulk Liquid	MS-143AX	Highly Recommended	Recommended	Not Recommended
	MS-143E	Recommended	Recommended	Recommended
	MS-143H	Highly Recommended	Recommended	Highly Recommended
	MS-143XD	Recommended	Recommended	Recommended

ROOM TEMPERATURE MOLDS: Apply MS-122 Series or 143 Series release agents on molds up to 212°F/100°C. Molds can then be heated to 580°F/304°C.

HOT MOLDS: Apply MS-136W or MS-145W on pre-heated molds above 212°F/100°C up to 550°F/285°C.

EXCELLENT FOR COMPLEX MOLDED PARTS

Miller-Stephenson release agents have proven themselves in the most complicated and demanding molded part configurations imaginable. The active ingredient is PTFE, or polytetrafluoroethylene, which has an extremely low coefficient of friction and, thus, imparts high lubricity and excellent nonstick properties. Distortion is virtually nonexistent - an extremely important criterion in precision molding.

Process Selection Chart

Miller-Stephenson release agents and dry lubricants are versatile and are used in a variety of products and manufacturing operations:

Application Selection Chart

Bulk Liquid for Brush, Dip, and Spray Gun Application

Custom formulations available

Dry Lubricant Applications

The outstanding lubricity of the PTFE (polytetrafluoroethylene telomer) solids incorporated in Miller-Stephenson Dry Lubricants is indicated by the low coefficient of friction. The following values were determined at 23 pounds per square inch: steel on steel, 0.11; aluminum on aluminum, 0.16; hardwood on hardwood, 0.10. All Dry Lubricants, whether packaged in aerosol or bulk, may be applied to the following materials:

Ceramics
Elastomers
Glass
Metal
Plastic
Rubber
Wood

Dry Lubricant Selection Chart

	Product	Dry Lubricant for Metal on Metal	Dry Lubricant for Rubber on Metal
Aerosols	MS-122AD	Highly Recommended	Recommended
	MS-122ADL	Highly Recommended	Recommended
	MS-122E	Recommended	Not Recommended
	MS-122XD	Recommended	Recommended
Bulk Liquid	MS-143AX	Not Recommended	Highly Recommended
	MS-143E	Recommended	Not Recommended
	MS-143H	Highly Recommended	Recommended
	MS-143XD	Highly Recommended	Recommended

Miller-Stephenson’s Dry Lubricants minimize "slip-stick" problems, and are most effective in low speed, light load applications. Specific uses include:

Wire and cable.
Thread, cord and rope.
Chain drives.
Gears and belts.
Metalworking, including extrusion, rolling, drawing and sizing.
Machine parts and tools, including nuts, bolts, thread connections, locks, power saw blades and machine mechanisms.
Hardware, including hinges, locks and catches, window guides, and guides on cabinet drawers.

Release Agents / Dry Lubricants

MS-122 and MS-143 Series PTFE Release Agents/Dry Lubricants create superior releases for plastics, elastomers and resins; including acrylics, urethanes, rubber, nylons, epoxies, polycarbonates and polystyrene. Designed to give multiple releases between applications. Recommended for applications to 580°F (304°C).To increase number of releases between applications, coating may be fused at 581°F (305°C) to 590°F (310°C). Performance may vary due to mold temperatures and mold type. As a dry lubricant, may be used on metal, glass, ceramics, rubber, elastomers, wood, paper and some plastics. No discernible transfer. No migration. Nonflammable. Contains no silicones. No ODC (ozone depleting chemicals). To select the most suitable product for your application, please call our Technical Service Department (8 AM - 4 PM E.T.): 800.992.2424 or 203.743.4447. In Canada, call 800.323.4621.

To learn more about our latest copy of our Krytox® Catalog, please contact our Technical Service Department. USA: 1.800.992.2424 Canada: 1.800.323.4621