Santoprene 8201-70 TPV | 75A Natural Colorable General-Purpose TPV

描述

Santoprene 8201-70 is a natural, colorable thermoplastic vulcanizate from Celanese designed for a broad range of extrusion and molding applications.

It belongs to the Santoprene Enhanced Colorability family and combines rubber-like flexibility with thermoplastic processing efficiency.

Current Celanese portfolio data lists:

• 75 Shore A hardness
• Natural appearance
• 570% elongation at break
• 7.5 MPa tensile stress at break
• 2.9 MPa stress at 100% elongation
• 36% compression set at 70°C / 22 h
• General-purpose extrusion and molding
• Colorable formulation

Santoprene 8201-70 is especially useful where manufacturers need a flexible elastomeric material that can be customized in color rather than using a standard black compound.

The grade is also non-hygroscopic and shear dependent, giving it good processing flexibility across injection molding, extrusion, blow molding and thermoforming.

Typical applications include:

• Flexible seals
• Soft-touch grips
• Consumer products
• Appliance parts
• Kitchenware
• Electrical strain reliefs
• Flexible profiles
• Molded technical components

For more TPV products, visit our TPV Thermoplastic Vulcanizates Product Category →.

For current Santoprene portfolio information, see the Official Celanese Santoprene & Geolast Product Finder →.

Key Features of Santoprene 8201-70

Typical Applications for Santoprene 8201-70

Santoprene 8201-70 is a broad-use grade suitable for flexible molded and extruded applications.

The grade is particularly useful when the application needs both colorability and broad processing freedom.

Typical Properties of Santoprene 8201-70

Physical Properties

The number 70 in the grade designation should not be treated as the current measured hardness. The published typical value is approximately 75 Shore A.

Mechanical Properties

These values give Santoprene 8201-70 a useful balance between flexibility, tensile strength and sealing recovery.

Low-Temperature Performance

Santoprene 8201-70 has a published brittleness temperature of approximately:

-63°C

This indicates useful flexibility in low-temperature environments.

Potential applications include:

• Outdoor equipment
• Automotive components
• Cold-storage components
• Flexible seals
• Consumer products

Brittleness temperature should not be interpreted as a guaranteed continuous operating limit, but it is useful for comparative low-temperature material selection.

Natural & Enhanced Colorability

One of the strongest features of Santoprene 8201-70 is its natural, easy-coloring formulation.

Potential finished colors include:

• White
• Gray
• Blue
• Red
• Green
• Beige
• Custom brand colors

This is useful for:

• Kitchen tools
• Appliances
• Consumer electronics
• Stationery
• Flexible grips
• Visible technical parts

Compatible color masterbatch should be selected to maintain:

• Mechanical properties
• Surface quality
• Processing stability
• Color uniformity
• Long-term appearance

Non-Hygroscopic Behavior

Santoprene 8201-70 is described as non-hygroscopic.

Under normal storage conditions, the grade requires little or no drying compared with strongly moisture-sensitive engineering plastics.

This can provide:

• Faster production start-up
• Reduced dryer use
• Lower energy consumption
• Easier material handling

If material becomes wet or exposed to condensation, controlled drying may still be used before processing.

Ozone Resistance

Santoprene 8201-70 is recommended for applications requiring excellent ozone resistance.

This is especially useful for:

• Seals
• Flexible interfaces
• Exterior components
• Industrial elastomeric parts

Ozone resistance helps reduce the risk of surface cracking in flexible components exposed to atmospheric ozone while under strain.

Flex-Fatigue Resistance

The grade also provides excellent flex-fatigue resistance.

This supports components that repeatedly:

• Bend
• Stretch
• Compress
• Recover
• Fold
• Move during service

Typical examples include:

• Flexible grips
• Strain reliefs
• Sealing lips
• Repeated-motion components

Sealing Performance

Santoprene 8201-70 is suitable for general sealing applications.

The combination of:

• 75 Shore A hardness
• 570% elongation
• 7.5 MPa tensile strength
• 36% compression set at 70°C

makes it relevant to:

• Housing seals
• Gaskets
• Flexible interfaces
• Protective sealing components
• Molded sealing rings
• Extruded sealing profiles

Thermal Performance

Published grade-specific thermal data includes:

These values provide useful engineering guidance for electrical and mechanical applications.

Electrical Properties

Published historical data includes:

These properties can be relevant in:

• Cable accessories
• Strain reliefs
• Flexible protective electrical parts
• Consumer electronics

Flammability

Published historical grade data gives:

Santoprene 8201-70 should therefore be treated as an HB-rated general-purpose TPV, not a flame-retardant V-0 grade.

Heat-Aging Performance

Published heat-aging data after 150°C for 168 hours includes approximately:

These values show useful property retention under the specified aging test.

They should not be interpreted as a universal 150°C continuous-service rating.

Why Choose Santoprene 8201-70?

The strongest reason to select Santoprene 8201-70 is its combination of colorability, medium-firm flexibility and broad thermoplastic processability.

The grade provides:

• 75 Shore A hardness
• 0.950 g/cm³ density
• 570% elongation
• 7.5 MPa tensile stress at break
• 2.9 MPa stress at 100% elongation
• 36% compression set at 70°C / 22 h
• 57% compression set at 125°C / 70 h
• Natural/colorable appearance
• Non-hygroscopic behavior
• Excellent ozone resistance
• Excellent flex-fatigue resistance
• Good chemical resistance
• Injection molding
• Extrusion
• Blow molding
• Thermoforming
• Vacuum forming

For customers requiring a natural, colorable and versatile TPV for flexible molded or extruded parts, Santoprene 8201-70 is a strong general-purpose grade.

Processing Guidelines for Santoprene 8201-70

Santoprene 8201-70 supports a wide range of thermoplastic processing methods:

• Injection Molding
• Multi-Injection Molding
• Coextrusion
• Extrusion
• Profile Extrusion
• Sheet Extrusion
• Extrusion Blow Molding
• Blow Molding
• Injection Blow Molding
• Thermoforming
• Vacuum Forming

Injection Molding Conditions

Screw Design

Published processing guidance includes:

These settings help support stable melt preparation and consistent injection behavior.

Extrusion Conditions

Actual extrusion settings depend on:

• Profile geometry
• Extruder size
• Screw design
• Line speed
• Die design
• Surface-quality requirements

Shear-Dependent Flow

Santoprene 8201-70 is shear dependent.

As shear rate increases, apparent melt viscosity decreases.

This means flow can be improved by optimizing:

• Injection speed
• Screw speed
• Gate size
• Runner design
• Die geometry

rather than simply increasing temperature.

This characteristic is useful for:

• Thin flexible sections
• Sealing lips
• Complex molded geometries
• Long flow paths
• Fine extrusion profiles

Multi-Injection Molding

Santoprene 8201-70 can also be processed by multi-injection molding.

Potential applications include:

• Hard/soft components
• Flexible grips
• Integrated sealing areas
• Multi-material consumer products

However, this is not a dedicated bonding grade like the B100 or B150 families.

Adhesion to the rigid substrate should be tested with the exact resin formulation.

Blow Molding

Santoprene 8201-70 supports:

• Blow Molding
• Extrusion Blow Molding
• Injection Blow Molding

This allows production of flexible hollow components where conventional rigid thermoplastics may not provide sufficient elasticity.

Thermoforming & Vacuum Forming

The grade can also be used for:

• Thermoforming
• Vacuum Forming

Potential applications include flexible sheets, protective components and formed elastomeric parts.

Material Compatibility

Santoprene TPV is incompatible with:

• POM / Acetal
• PVC

Processing equipment should be thoroughly purged when switching between these materials and Santoprene 8201-70.

Manufacturing-Stream Recyclability

Santoprene 8201-70 is polyolefin based and suitable for controlled manufacturing-stream recycling.

Published processing guidance permits up to approximately:

20% regrind

as a starting reference.

Potential clean process scrap includes:

• Sprues
• Runners
• Extrusion trim
• Start-up scrap
• Selected rejected components

Regrind levels should be controlled according to:

• Mechanical properties
• Surface quality
• Color consistency
• Final qualification requirements

Related Products

We supply Santoprene TPV grades for different hardness, colorability, flow and processing requirements.

Typical product families include:

• Santoprene 8201 Series
• Santoprene enhanced-colorability TPV
• Santoprene natural TPV grades
• Santoprene injection-molding grades
• Santoprene extrusion grades
• Santoprene blow-molding grades
• Santoprene sealing grades
• Santoprene consumer-product TPV
• Santoprene flexible-grip materials

View More TPV Thermoplastic Vulcanizates →

Technical Documents for Santoprene 8201-70

Need technical documents for Santoprene 8201-70?

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FAQ About Santoprene 8201-70

Q1: What is Santoprene 8201-70?

Santoprene 8201-70 is a natural, enhanced-colorability TPV from Celanese designed for general-purpose extrusion and molding applications.

Q2: What is the hardness of Santoprene 8201-70?

The current published typical hardness is approximately 75 Shore A.

Q3: Is Santoprene 8201-70 exactly 70 Shore A?

No. The grade designation contains 70, but the current published typical hardness is 75 Shore A.

Q4: What is the density?

The typical density is approximately 0.950 g/cm³.

Q5: What is the elongation at break?

The typical value is approximately 570%.

Q6: What is the tensile stress at break?

The typical value is approximately 7.5 MPa.

Q7: What is the stress at 100% elongation?

The typical value is approximately 2.9 MPa.

Q8: What is the compression set?

Published values include approximately 36% at 70°C / 22 h and 57% at 125°C / 70 h.

Q9: Is Santoprene 8201-70 Natural or Black?

The standard grade is Natural.

Q10: Can Santoprene 8201-70 be colored?

Yes. It belongs to Celanese’s Enhanced Colorability TPV family.

Q11: Is Santoprene 8201-70 non-hygroscopic?

Yes. The grade is described as non-hygroscopic and normally requires little to no drying under proper storage conditions.

Q12: Is Santoprene 8201-70 suitable for seals?

Yes. Sealing applications are specifically listed for this grade.

Q13: Can Santoprene 8201-70 be injection molded?

Yes. Injection molding and multi-injection molding are supported.

Q14: Can Santoprene 8201-70 be extruded?

Yes. Extrusion, profile extrusion, sheet extrusion and coextrusion are supported.

Q15: Can Santoprene 8201-70 be blow molded?

Yes. Blow molding, extrusion blow molding and injection blow molding are all listed processing routes.

Q16: Is Santoprene 8201-70 flame retardant?

No. Historical published data gives UL 94 HB, so it should not be marketed as a V-0 flame-retardant grade.

Request Santoprene 8201-70 Price & Technical Support

For pricing, availability, technical documents or application support for Santoprene 8201-70, please provide:

• Required quantity
• Destination country or port
• Application
• Required hardness
• Required color
• Seal / grip / appliance / consumer application
• Injection / extrusion / blow-molding process
• Operating temperature
• Chemical-contact conditions
• Flex-fatigue requirement
• TDS / SDS requirement
• COA requirement
• Sample requirement, if applicable

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