Santoprene 8221-55M300 TPV | Automotive Interior High-Flow TPV

描述

Santoprene 8221-55M300 is a soft, Natural and colorable thermoplastic vulcanizate from Celanese developed for automotive interior molded components that require easy processing and improved resistance to surface wear.

Celanese places the 8221-xxM300 family in its Automotive Interior portfolio, with the family covering colorable grades from approximately 55 Shore A up into the harder Shore D range. The M300 family is specifically positioned around improved flow for easier processability.

For Santoprene 8221-55M300 specifically, the current Product Finder lists:

• 52 Shore A hardness
• Natural appearance
• 350% elongation at break
• 4.0 MPa tensile stress at break
• 1.5 MPa stress at 100% elongation
• Improved flow for easier processing
• Improved abrasion resistance

This gives the grade a useful combination of:

softness + high flow + colorability + abrasion resistance

for automotive interior components that are regularly touched, rubbed or contacted during use.

Unlike very hard interior skin grades, Santoprene 8221-55M300 remains relatively soft at approximately 52 Shore A, making it suitable for parts where a more compliant elastomeric feel is desirable.

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 8221-55M300

Why M300 Is Different

The M300 suffix is important.

Santoprene 8221-55M300 should not simply be presented as another general-purpose 52A TPV.

Celanese specifically groups 8221-xxM300 under Automotive Interior and describes the family as providing:

Improved flow for easier processability.

For the 8221-55M300 grade, Celanese also identifies:

Improved abrasion resistance.

That makes this grade particularly relevant to interior surfaces exposed to repeated physical contact.

Typical Applications for Santoprene 8221-55M300

Celanese lists a broad range of Santoprene automotive interior applications including mats, cup holders, handles, grips, flapper-door seals and other flexible interior components.

For Santoprene 8221-55M300, relevant applications include:

Typical Properties of Santoprene 8221-55M300

Physical Properties

Celanese’s current Product Finder lists the actual hardness at approximately 52 Shore A. The 55 in the grade designation should therefore not be treated as an exact hardness value.

Mechanical Properties

These are the current exact-grade values published in the Celanese Product Finder.

No current Product Finder compression-set value is shown for Santoprene 8221-55M300, so one should not be copied from another 8221 or 8211 grade.

52 Shore A Soft Interior Feel

At approximately 52 Shore A, Santoprene 8221-55M300 provides a distinctly softer surface than hard interior skin materials.

This can help create:

• Comfortable hand contact
• Flexible touch zones
• Softer interfaces
• Reduced hard-plastic feel
• Compliant surface features

Potential locations include:

• Handles
• Grips
• Console inserts
• Storage-area inserts
• Contact pads

The grade therefore works particularly well where the customer wants a soft elastomeric interior component rather than a hard decorative skin.

Improved Abrasion Resistance

One of the most important features of Santoprene 8221-55M300 is its improved abrasion resistance.

Abrasion occurs when a surface repeatedly rubs against:

• Clothing
• Objects
• Hands
• Stored items
• Adjacent vehicle components

Over time, insufficient abrasion resistance can lead to:

• Visible wear
• Surface polishing
• Texture loss
• Material removal
• Poor appearance

The M300 formulation helps address these repeated-contact conditions.

Interior Mats & Storage Areas

Automotive mats and storage components are good examples of where abrasion resistance matters.

Such parts may experience repeated contact from:

• Shoes
• Keys
• Phones
• Bottles
• Coins
• Personal items

Santoprene 8221-55M300 can provide a soft flexible surface while offering improved resistance to repetitive rubbing.

This is a stronger application angle for this grade than simply calling it a “general-purpose high-flow TPV.”

Cup-Holder Components

Celanese includes mats and cup holders among its automotive interior Santoprene applications.

TPV can be useful in cup-holder components because the material can provide:

• Flexible contact
• Soft retention
• Reduced rattling
• Surface protection
• Better tactile feel

Santoprene 8221-55M300’s relatively soft 52A hardness makes this application especially relevant.

Handles & Grips

Celanese also lists handles and grips among interior Santoprene applications.

Santoprene 8221-55M300 can provide:

• Soft-touch contact
• Comfortable surface compliance
• Flexible deformation
• Improved resistance to rubbing
• Custom color capability

These characteristics can be useful in interior components regularly handled by drivers or passengers.

Natural & Colorable Formulation

Santoprene 8221-55M300 is supplied in Natural form.

This is important in automotive interiors because many vehicle cabins use carefully coordinated color schemes.

Possible finished colors include:

• Black
• Charcoal
• Gray
• Beige
• Brown
• Blue
• Custom OEM colors

The Natural base provides greater design flexibility than a pre-blackened TPV.

Color Matching for Automotive Interiors

Interior color development should consider:

• Masterbatch carrier
• Pigment loading
• Tool texture
• Part thickness
• Processing temperature
• Surface gloss
• Adjacent trim materials

A color that looks correct on a flat plaque may appear different on a textured production part.

Production-intent trials are therefore important when matching:

• Dashboard trim
• PP interior panels
• Painted trim
• Fabrics
• Leather
• Other TPE surfaces

Improved Flow for Easier Processing

Celanese specifically identifies improved flow for easier processability as the primary family feature of 8221-xxM300.

This is useful for automotive interior parts because they often contain:

• Thin sections
• Large surface areas
• Long flow lengths
• Detailed textures
• Complex ribs
• Fine edges

Improved flow can help reduce:

• Short shots
• Incomplete details
• Excessive filling pressure
• Poor cavity balance

Large-Area Molded Components

Interior components can be much larger than conventional small seals.

Large molded parts present challenges such as:

• Long melt travel
• Pressure drop
• Cooling before fill completion
• Weld-line placement
• Surface consistency

A high-flow TPV formulation can provide more freedom when designing these parts.

Santoprene 8221-55M300 is therefore relevant not only because it is soft, but because it is engineered to process more easily in demanding mold geometries.

Surface Texture Reproduction

Automotive interior parts often use molded textures to improve appearance.

Typical surfaces include:

• Matte texture
• Fine grain
• Technical patterns
• Leather-like grain
• Anti-slip patterns

Improved flow can help the material reach and reproduce fine mold features more consistently.

Actual surface quality depends on:

• Mold temperature
• Injection speed
• Gate location
• Tool finish
• Part geometry

Flexible Interior Components

The approximately 350% elongation at break gives Santoprene 8221-55M300 enough deformation capability for many flexible interior components.

This can help parts tolerate:

• Assembly deformation
• Repeated hand contact
• Bending
• Compression
• Local stretching

without behaving like a rigid thermoplastic.

4.0 MPa Tensile Strength

The typical tensile stress at break is approximately:

4.0 MPa.

This provides useful mechanical integrity for relatively soft automotive interior components.

The grade is therefore suitable for components that need to remain soft while still surviving:

• Assembly
• Handling
• Daily vehicle use
• Repeated surface contact

1.5 MPa at 100% Elongation

The published stress at 100% elongation is approximately:

1.5 MPa.

This relatively low modulus supports the soft character of Santoprene 8221-55M300.

The material can deform under moderate force while maintaining useful recovery.

This is valuable for:

• Flexible grips
• Soft inserts
• Interior contact surfaces
• Elastomeric covers

Interior Appearance vs Structural Performance

Santoprene 8221-55M300 is best used where the TPV itself performs both a functional and tactile role.

Typical design objectives may include:

surface comfort + abrasion resistance + flexible geometry + easy processing

rather than maximum structural stiffness.

Rigid backing components can provide structural support while the TPV provides the flexible contact surface.

Multi-Component Interior Designs

Santoprene 8221-55M300 can be considered for multi-component molding where a flexible TPV zone is integrated with a rigid thermoplastic component.

Potential constructions include:

• Rigid interior panel + flexible insert
• Hard console component + soft contact region
• Rigid housing + flexible grip surface

The exact substrate and interface should be validated before production.

Santoprene 8221-55M300 should not automatically be described as a dedicated chemical bonding grade like the B100 family.

Injection Molding of Santoprene 8221-55M300

The strongest processing message for this grade is improved flow.

Rather than publishing temperature values borrowed from adjacent M300 grades, production settings should be based on the latest 8221-55M300 grade-specific TDS.

The most important variables include:

• Melt temperature
• Mold temperature
• Injection speed
• Screw speed
• Gate geometry
• Runner balance
• Venting
• Residence time

Shear-Dependent Flow

Santoprene TPV exhibits shear-dependent melt behavior.

As shear increases, apparent viscosity decreases.

For high-flow molding this means filling can often be improved through:

• Faster controlled injection
• Appropriate screw speed
• Optimized gate dimensions
• Balanced flow paths

instead of simply raising melt temperature.

Gate Placement

Gate design is particularly important for visible automotive interior components.

Poor gate placement can create:

• Flow marks
• Weld lines
• Texture changes
• Uneven filling

Gate location should therefore be selected with both:

processing performance and final appearance

in mind.

Mold Venting

Good venting helps avoid trapped air.

Poor mold venting can result in:

• Burns
• Short shots
• Surface defects
• Poor texture reproduction

End-of-flow zones and fine details should receive particular attention.

Surface-Wear Validation

Although Santoprene 8221-55M300 has improved abrasion resistance, final performance depends on the actual part.

Relevant factors include:

• Surface texture
• Contact load
• Abrasive material
• Number of cycles
• Temperature
• Cleaning chemicals

Production parts should therefore be evaluated using the customer’s required abrasion test.

Why Choose Santoprene 8221-55M300?

The strongest reason to select Santoprene 8221-55M300 is its combination of:

• 52 Shore A soft feel
• 350% elongation
• 4.0 MPa tensile strength
• 1.5 MPa stress at 100% elongation
• Improved flow
• Improved abrasion resistance
• Natural / colorable formulation
• Automotive Interior positioning
• Easy molding of complex flexible components

This makes it particularly attractive for soft, visible or contact-sensitive automotive interior parts that also need improved wear resistance.

Related Products

We supply Santoprene TPV materials for automotive interior, molding, colorability and surface-durability requirements.

Typical product families include:

• Santoprene M300 Automotive Interior Grades
• Santoprene 8221 Series
• Santoprene Automotive Interior TPV
• Santoprene Abrasion-Resistant TPV
• Santoprene High-Flow TPV
• Santoprene Natural / Colorable TPV
• Santoprene Interior Grip Materials
• Santoprene Interior Mat Materials
• Santoprene Multi-Component Interior TPV

View More TPV Thermoplastic Vulcanizates →

Technical Documents for Santoprene 8221-55M300

Need technical documents for Santoprene 8221-55M300?

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Please state Santoprene 8221-55M300 and provide your automotive interior application, required color and surface-wear requirements.

FAQ About Santoprene 8221-55M300

Q1: What is Santoprene 8221-55M300?

Santoprene 8221-55M300 is a Natural, colorable automotive interior TPV from Celanese designed for improved processing and improved abrasion resistance.

Q2: What is the hardness of Santoprene 8221-55M300?

The current Celanese Product Finder lists approximately 52 Shore A.

Q3: Is Santoprene 8221-55M300 exactly 55 Shore A?

No. The grade designation includes 55, while the current published typical hardness is approximately 52 Shore A.

Q4: What is the elongation at break?

The current published value is approximately 350%.

Q5: What is the tensile stress at break?

The typical published value is approximately 4.0 MPa.

Q6: What is the stress at 100% elongation?

The current published value is approximately 1.5 MPa.

Q7: Is Santoprene 8221-55M300 an automotive interior grade?

Yes. Celanese specifically lists the 8221-xxM300 family under Interior in its automotive grade slate.

Q8: Is Santoprene 8221-55M300 high flow?

Yes. The M300 family is specifically identified as providing improved flow for easier processability.

Q9: Does Santoprene 8221-55M300 have improved abrasion resistance?

Yes. Celanese’s Product Finder specifically lists improved abrasion resistance for the 8221-55M300 grade.

Q10: What color is Santoprene 8221-55M300?

The standard material is Natural.

Q11: Can Santoprene 8221-55M300 be colored?

Yes. The M300 family is identified as colorable, making it suitable for customized automotive interior colors.

Q12: Is it suitable for automotive grips?

Yes. Celanese includes handles and grips among Santoprene automotive interior applications.

Q13: Can it be used for cup-holder components?

Yes. Mats and cup holders are among Celanese’s listed Santoprene automotive interior application areas.

Q14: Is Santoprene 8221-55M300 a scratch-resistant M350 grade?

No. Do not market it as M350. The verified distinction for 8221-55M300 is improved flow and improved abrasion resistance. Celanese separately identifies M350 grades for improved scratch/mar resistance.

Q15: Is Santoprene 8221-55M300 a dedicated bonding grade?

No. It should not automatically be treated as a B100/B150 special bonding TPV.

Q16: What is the main advantage of Santoprene 8221-55M300?

Its strongest combination is 52 Shore A softness + improved flow + improved abrasion resistance + Natural colorability + dedicated automotive interior positioning.

Request Santoprene 8221-55M300 Price & Technical Support

For pricing, availability or technical support for Santoprene 8221-55M300, please provide:

• Required quantity
• Destination country or port
• Automotive interior application
• Mat / cup holder / grip / trim application
• Required color
• Required surface texture
• Abrasion-resistance requirement
• Part dimensions
• Wall thickness
• Injection-molding process
• Rigid substrate, if multi-material
• OEM specification, if applicable
• TDS / SDS requirement
• COA requirement
• Sample requirement, if applicable

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