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Ethylene Propylene Copolymer Manufacturer Viscosity Index Improver
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Ethylene Propylene Copolymer Manufacturer Viscosity Index Improver
Ethylene Propylene Copolymer
Description：
Buy premium Ethylene Propylene Copolymer (EPM) from Chemost. We supply solid bales (J0010, J0050) and liquid OCP Viscosity Index Improvers. Ideal for formulating multi-grade engine, gear, and hydraulic oils.
Category：
Thickeners&Viscosity Index Improvers
Product Details
Ethylene Propylene Copolymer (EPM) – Viscosity Index Improver
CAS No: 9010-79-1 | Product Code: J0010 / J0050
Product Overview
Ethylene Propylene Copolymer (EPM), also widely recognized in the industry as Olefin Copolymer (OCP), is a primary component used as a Viscosity Index Improver (VII) in the formulation of high-performance lubricants.
At Chemost, we specialize in supplying high-quality EPM designed to modify the rheological properties of lubricating oils. By minimizing viscosity changes during temperature fluctuations, our EPM ensures that lubricants maintain an optimal film thickness in high heat while remaining fluid enough for cold starts. It is the critical additive for blending multi-grade lubricants that meet modern OEM specifications.
Product Portfolio & Specifications
We offer EPM in both solid bale form and pre-dissolved liquid concentrates to suit different blending capabilities.
1. Solid EPM (Amorphous Block/Bale)
Our core solid grades, J0010 and J0050, are white, transparent to semi-transparent amorphous elastomers. They feature excellent shear stability and thermal oxidation stability.
Property | Unit | J0010 (Standard Shear) | J0050 (High Shear Stability) | Test Method |
|---|---|---|---|---|
Appearance |
| White/Semi-transparent Bale | White/Semi-transparent Bale | Visual |
Volatile matter content | 0.35 | 0.20 | GB/T24131.1 | |
Ash matter content | 0.02 | 0.02 | GB/T4498.1 | |
Ethylene content | 51.5 | 55.5 | SH/T1751 | |
Vanadium content | 1 | 1 | SH/T 1814 | |
Mooney Viscosity ML (1+4) 100 °C | 10 | 47 | SH/T0224 | |
Shear Stability Index(SSI) | 23 | 43 | SH/T0103 |
Note: Detailed Technical Data Sheets (TDS) and Certificates of Analysis (COA) are available upon request for specific batch parameters.
2. Liquid EPM (OCP VII)
For blending plants that prefer liquid handling, we offer Liquid OCP Viscosity Index Improvers. These are EPM copolymers pre-dissolved in Group I or Group II base oils, ready for direct injection into the blending kettle.
Key Benefits & Functionality
EPM is essential for bridging the gap between low-viscosity base oils and the performance requirements of modern machinery.
Excellent Viscosity-Temperature Performance:
Chemost EPM significantly increases the Viscosity Index (VI). This ensures the oil viscosity drops less as temperature rises (compared to single-grade oils), providing stable oil pressure and film strength.
All-Season Protection (Multi-grade Capability):
Lubricants formulated with our EPM offer distinct advantages:
Low-Temperature Startability: Ensures oil flows instantly to critical engine parts in winter.
High-Temperature Lubrication: Prevents oil thinning and metal-to-metal contact under heavy load and heat.
Four-Season Use: Enables the production of grades like 5W-30, 10W-40, and 15W-40 suitable for year-round use.
Energy Efficiency:
By optimizing the viscosity profile, EPM reduces internal fluid friction (drag) within the engine or hydraulic system, leading to measurable fuel savings and reduced power loss.
Strategic Cost Optimization:
EPM allows blenders to use lower viscosity (and often lower cost) base stocks to achieve high-viscosity finished products, effectively compensating for shortages or high costs of heavy neutral base oils (e.g., BS150).
Applications & Use Cases
Chemost EPM is compatible with API Group I, II, and III base oils and Polyalphaolefins (PAO).
1. Internal Combustion Engine Oils
Use Case: Manufacturing PCMO (Passenger Car Motor Oil) and HDDO (Heavy Duty Diesel Oil).
Function: achieving required SAE viscosity grades (e.g., SAE 30, 40, 50, 15W-40).
Recommended Grade: J0050 is often preferred for applications requiring higher thickening efficiency.
2. Industrial Gear Oils
Use Case: Enclosed gear systems operating under variable temperatures.
Function: improving the VI to protect gears during cold startups and high-load operations.
3. Hydraulic Fluids
Use Case: High-VI hydraulic fluids for construction equipment (excavators, loaders).
Function: maintaining hydraulic pressure stability across extreme temperature swings.
Handling & Compatibility
Solubilization Guide
Solid EPM (J0010/J0050) must be cut into small pieces and dissolved in base oil at temperatures between 100°C and 120°C with mechanical agitation. Nitrogen blanketing is recommended during the dissolution process to prevent oxidation.
Additive Synergy
Our EPM is designed to be chemically inert regarding other additive components. It shows excellent compatibility with:
- Pour Point Depressants (PPD): Works synergistically to improve cold flow properties.
- Detergent/Inhibitor (DI) Packages: Does not interfere with the tribological performance of ZDDP or Sulfonates.
Quality Assurance & Documentation
As a B2B supplier to manufacturers, we understand that documentation is part of the product. We provide a full compliance suite for every shipment:
- TDS (Technical Data Sheet): Detailed physical and chemical properties.
- COA (Certificate of Analysis): Batch-specific test results.
- MSDS (Material Safety Data Sheet): Safety handling and transport guidelines.
- Sample Support: 1kg - 5kg samples available for lab testing and pilot blends.
FAQ (Frequently Asked Questions)
Q: What is the main difference between J0010 and J0050?
A: The primary difference lies in the molecular weight and shear stability. J0010 generally offers better shear stability (lower SSI), making it suitable for applications where viscosity retention is critical. J0050 offers higher thickening efficiency, meaning you use less polymer to achieve the same target viscosity, though with a different shear profile.
Q: Can you supply Liquid OCP if we cannot dissolve solid rubber?
A: Yes. We supply liquid Viscosity Index Improvers (OCP VII) with varying shear stability indexes (e.g., SSI 25, SSI 35, SSI 50) ready for immediate blending.
Q: How do I store the solid bales?
A: EPM bales should be stored in a dry, ventilated warehouse below 45°C. Avoid direct sunlight. The shelf life is typically 24 months when properly stored.
Q: What is the typical treat rate?
A: Treat rates vary based on the target viscosity grade and base oil used. Typically, it ranges from 0.5% to 2.0% (solid weight) in the finished oil formulation.
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We believe that as long as we provide high-quality services to our customers, CheMost Additives CO., LTD's products will always gain the trust and support of our customers and have a stable market.
Our factory
We have over 20 professional chemical reactor,the annual production capacity of the products can reach 20,000 tons, while ensuring quality, we can provide stable and continuous supply.
Our warehouse
We are well aware that for the stable supply of chemical products, storage is the foundation. In the face of the ever-changing global market environment, a sustainable storage capacity is of vital importance.
Our laboratory
Long-term cooperation cannot be achieved without stable product quality. Under the supervision of over 20 pieces of testing equipment and 70 tests, the quality of the products is qualified and stable.
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Key word：
Ethylene Propylene Copolymer
EPM Rubber
Viscosity Index Improver
VII Additive
OCP Polymer
Lubricant Additive Supplier
OCP Viscosity Modifier
Multi-grade Oil Additive
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