ROYALENE 677

Royalene 677 provides enhanced compression set and good color in TPV.
Royalene 677 is especially suited for blending with polyolefins, making it useful in TPO / TPV applications thanks to its high extendability and compatibility.
Royalene 677 is used good for low‑hardness compounds, extruded shapes, and parts that require good aging and green strength.

CAS Number: 25038‑36‑2 
EC Number / EINECS: Not clearly specified under “Royalene 677” product summary; as a polymer, it may not have a single EC number.
Other Components: Distillates (petroleum, hydrotreated) are part of the formulation (~13‑50%) per SDS. 
Molecular Formula / Molecular Weight: Not applicable for the commercial polymer (EPDM), because it’s a mixture / high‑molecular-weight polymer, not a defined small molecule.

SYNONYMS:
Royalene 677, Royalene® 677, Lion Elastomers Royalene 677, EPDM 677, Ethylene‑Propylene‑Diene (677) polymer, Ethylene-Propylene-Diene 677 polymer.

Royalene 677 is an ethylene propylene diene (EPDM) rubber extended with a heavy, white, hydrotreated paraffinic oil and ENB content.
Royalene 677 contains a non-staining stabilizer.
Royalene 677 exhibits medium molecular weight distribution, good aging properties, good shape retention and very high molecular weight.

Royalene 677 offers enhanced compression set, good color, high green strength over broad temperature range and low hardness.
Royalene 677 blends easily with polyolefins.

Royalene 677 is a high-molecular-weight EPDM terpolymer (with ENB diene) extended with paraffinic oil, designed for TPO / TPV and thermoset elastomer applications.
Royalene 677 offers great extendability, strong green strength, compression set performance, and aging stability.

Royalene 677 has a highly extendable.
Royalene 677 has good aging properties.
Royalene 677 has good shape retention in extruded applications.

Royalene 677 is very high molecular weight base polymer.
Royalene 677 is high green strength over a broad temperature range.
Royalene 677 is used useful for making low hardness compounds.

Royalene 677 is extended with a white, hydrotreated paraffinic oil.
Safety-wise, Royalene 677 is relatively benign as a solid polymer; the main hazards arise from dust during handling and from decomposition products if exposed to flame.

Standard industrial hygiene practices — gloves, dust masks, and eye protection — are sufficient for safe handling.
Royalene 677 is chemically stable under normal storage conditions and should be kept dry in a cool, ventilated area to maintain quality.
Benefits of Royalene 677 include its excellent green strength, high elongation, good processability, aging resistance, and flexibility, making it highly versatile for both thermoset and thermoplastic elastomer applications.

Royalene 677's composition allows for enhanced adhesion in multilayer constructions, and the polymer’s consistency ensures reliable lot-to-lot performance in manufacturing.
The oil-extended Royalene EPDM grades, such as Royalene 677, 694 and 645, have been successfully used in TPV compounds for years.

Shown in table 17 are the comparison data of the polymer characteristics of Royalene 677, a premium EPDM product for TPV, Royalene 5158, a new experimental ultra-high molecular weight EPDM product with lower oil extension, and a competitive EPDM product, and the physical properties of the TPV compounds prepared with these EPDM polymers.

USES and APPLICATIONS of ROYALENE 677:
Royalene 677 blends readily with polyolefins for TPO and TPV compounds
Royalene 677 provides enhanced compression set and good color in TPV.
Thermoplastic Vulcanizates (TPV) / Thermoplastic Polyolefins (TPO): Royalene 677 is especially suited for blending with polyolefins, making it useful in TPO / TPV applications thanks to its high extendability and compatibility.

Automotive Components of Royalene 677: Useful in extrusions, profiles, hoses, and other automotive elastomer parts.
Mechanical Goods & Profiles: Royalene 677 is used good for low‑hardness compounds, extruded shapes, and parts that require good aging and green strength.

Low-Hardness Compounds: Because of its high molecular weight base polymer and good green strength, Royalene 677 is well-suited for making soft elastomer compounds.
Highly Extendable: Because of Royalene 677's high molecular weight and oil extension, 677 offers very good elasticity and large strain capability.

Good Shock / Set Performance: Royalene 677 provides enhanced compression set characteristics, meaning parts made with it retain shape well under compressive stress.
Excellent Aging: Royalene 677 shows good aging properties, making it durable for long-term use.

Green Strength: Strong “green strength” (green = uncured) over a broad temperature range — useful during processing, extrusion, and handling before curing or final crosslinking.
Shape Retention: Good retention of shape in extruded applications.

Oil‑Extended: Uses of Royalene 677 paraffinic oil to help reduce hardness and improve processability.
Plastics & Elastomers End Uses of Royalene 677: Automotive Applications, Automotive Exterior Parts, Automotive Interior Parts, Automotive Interior Trim, Automotive Under The Hood, Belts & Belt Repair, Conveyor Parts, Gaskets, Hoses, Machine/Mechanical Parts, and Radiator Seals, Seals, Thermoforming Applications, Tubing

Applications of Royalene 677: TPO and TPV
Automotive applications of Royalene 677: Mechanical goods, Hose tubes, Profile extrusions
Royalene 677 is designed for processing by profile extrusion.

Royalene 677 is used in automotive, mechanical goods and hose tube applications.
Royalene 677 complies with FDA 21 CFR 177.2600 regulation.
Royalene 677 is used in automotive, extrusion, hose/profile, and soft elastomer applications.

From a safety perspective, Royalene 677’s relatively benign (not classified as a strong hazard) but should be handled with standard polymer handling practices.
Royalene 677 blends readily with polyolefins for TPO and TPV compounds.

Royalene 677 provides enhanced compression set and good color in TPV.
Applications of Royalene 677 include TPO and TPV.
Automotive applications of Royalene 677: Mechanical goods, Hose tubes, Profile extrusions.

Royalene 677 is a high-performance ethylene-propylene-diene monomer (EPDM) terpolymer produced by Lion Elastomers.
Royalene 677 is specifically designed for polar and non-polar elastomer applications where flexibility, aging resistance, and dimensional stability are required.

Royalene 677 contains a small amount (~4.5 wt %) of ENB (ethylidene norbornene) as the diene comonomer, which allows for efficient crosslinking during vulcanization.
To improve processability and reduce hardness, Royalene 677 is often oil-extended with white hydrotreated paraffinic oils, giving it a soft, easy-to-process characteristic while maintaining mechanical strength and elasticity.

In industrial applications, Royalene 677 is commonly used in extruded profiles, hoses, and automotive parts due to its excellent green strength and ability to maintain shape prior to curing.
Its compression set and rebound resilience make Royalene 677 suitable for seals, gaskets, and vibration-damping components.

Royalene 677’s excellent heat, ozone, and weathering resistance ensures long-term durability in demanding environments, including outdoor automotive and mechanical applications.

From a processing perspective, Royalene 677 is stable under normal handling conditions and compatible with common fillers, pigments, and reinforcing agents.
Royalene 677 can be blended with other EPDM grades, TPOs, or TPVs to achieve tailored hardness and elasticity profiles.
During compounding, care should be taken to avoid over-shearing, which could reduce molecular weight and affect performance.

SAFETY CLASSIFICATION of ROYALENE 677:
According to its SDS, Royalene 677 is not classified as a hazardous substance for standard GHS (it shows no major physical or health hazards).

*Handling Precautions: 
Use proper industrial hygiene — avoid inhaling dust / fumes when mixing, use gloves and eye protection.

*Storage: 
Store in a cool, dry place, in well-ventilated areas. 
According to the SDS, no special reactivity hazards when stored under normal conditions.

*First Aid: 
Because it’s a polymer (solid bale), typical first-aid involves washing off dusts on the skin and providing fresh air if inhaled (see SDS for full measures).

*Fire / Combustion: 
Polymers like EPDM can burn; in case of fire use appropriate extinguishing media. Refer to SDS for decomposition products and fire-fighting advice.

MATERIALS FEATURES of ROYALENE 677:
*Good Aging Behavior,
*Good Colorability,
*Good Compression Set,
*Good Green Strength,
*Good Weather Stability,
*Oil Extended

UNIQUE FEATURES of ROYALENE 677:
Royalene 677 blends readily with polyolefins for TPO and TPV compounds
Royalene 677 provides enhanced compression set and good color in TPV
Highly extendable

GOOD AGING PROPERTIES
*Good shape retention in extruded applications
*Very high molecular weight base polymer
*High green strength over a broad temperature range
*Useful for making low hardness compounds
*Extended with a white, hydrotreated paraffinic oil

PHYSICAL and CHEMICAL PROPERTIES of ROYALENE 677:
Product name: Royalene® 677
Manufacturer / Brand: Lion Elastomers (Royalene series) 
Polymer type: Ethylene‑Propylene‑Diene Terpolymer (EPDM) 
Diene monomer: ENB (Ethylidene Norbornene), ~4.5 wt % typical. 
Oil extension: Extended with white hydrotreated paraffinic oil (100 phr typical) as per data sheet.
Appearance / Physical Form: Solid, typically supplied in bales. 

Color: Off‑white. 
Specific Gravity: ~ 0.88 g/cc (from Knowde). 
Mooney Viscosity (unmilled): ~ 50 (ML 1+4 / 125 °C) for Royalene 677. 
Volatile Matter: ~ 1 wt % (according to ). 
ENB Content (Diene): ~ 4.5 wt %. 
Molecular Weight Distribution: Medium (per Lion / ). 
Stability & Reactivity:

According to the SDS, Royalene 677 is stable under normal handling and storage conditions and is “non‑reactive.” 
No significant dangerous polymerization or decomposition is listed under normal conditions.
CAS Number: 25038‑36‑2 
Other Components: Distillates (petroleum, hydrotreated) are part of the formulation (~13‑50%) per SDS. 
Distillate CAS = 64742‑54‑7. 
EC Number / EINECS: Not clearly specified under “Royalene 677” product summary; as a polymer, it may not have a single EC number.
Molecular Formula / Molecular Weight: Not applicable for the commercial polymer (EPDM), because it’s a mixture / high‑molecular-weight polymer, not a defined small molecule.

FIRST AID MEASURES of ROYALENE 677:
 -Description of first-aid measures
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation: 
Fresh air.
*In case of skin contact: 
Take off immediately all contaminated clothing. 
Rinse skin with
water/ shower.
*In case of eye contact:
After eye contact: 
Rinse out with plenty of water. 
Call in ophthalmologist. 
Remove contact lenses.
*If swallowed:
After swallowing: 
Immediately make victim drink water (two glasses at most). 
Consult a physician.
-Indication of any immediate medical attention and special treatment needed.
No data available

ACCIDENTAL RELEASE MEASURES of ROYALENE 677:
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains. 
Collect, bind, and pump off spills. 
Observe possible material restrictions. 
Take up dry. 
Dispose of properly. 
Clean up affected area.

FIRE FIGHTING MEASURES of ROYALENE 677:
-Extinguishing media:
*Suitable extinguishing media:
Carbon dioxide (CO2) 
Foam 
Dry powder
*Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
-Further information:
Prevent fire extinguishing water from contaminating surface water or the ground water system.

EXPOSURE CONTROLS/PERSONAL PROTECTION of ROYALENE 677:
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection. 
Safety glasses
*Body Protection:
protective clothing
*Respiratory protection:
Recommended Filter type: Filter A 
-Control of environmental exposure:
Do not let product enter drains.

HANDLING and STORAGE of ROYALENE 677:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed. 
Dry.

STABILITY and REACTIVITY of ROYALENE 677:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available