PRODUCTS CENTER
Viscosity Index Improver (VII) Manufacturer - OCP PMA PIB HSD Suppliers
Email： sales@chemost.com
Product Details
Why choose us
Get in touch
More products
Viscosity Index Improver (VII) Manufacturer - OCP PMA PIB HSD Suppliers
VII Manufacturer
Description：
Leading B2B supplier of Viscosity Improver Oil Additives. We offer OCP, PMA, PIB, and HSD technologies for high-performance multi-grade lubricants. Access full TDS, MSDS, and COA for industrial blending.
Category：
Thickeners&Viscosity Index Improvers
Product Details
Viscosity Improver Oil Additives (VII)
Engineered Solutions for Multi-Grade Lubricant Formulation
In the modern lubricant industry, the ability of an oil to maintain its protective film across extreme temperature gradients is the hallmark of quality. Viscosity Index Improvers (VII)—also known as Viscosity Modifiers—are the functional polymers that make multi-grade oils possible.
By optimizing the viscosity-temperature relationship, these additives ensure that lubricants remain fluid at sub-zero startups while providing high-strength shear resistance at peak operating temperatures.
【The Chemost Technology Portfolio】
We provide a comprehensive range of polymer chemistries, each tailored for specific industrial applications. Whether you are blending high-performance engine oils or high-VI hydraulic fluids, we offer the precise molecular structure required.
I. Olefin Copolymer (OCP / EPM)
CAS Number: 9010-79-1
Best For: Heavy-duty engine oils and cost-effective multi-grade lubricants.
Characteristics: High thickening efficiency and excellent thermal stability.
II. Polymethacrylate (PMA)
CAS Number: 25085-99-8
Best For: Hydraulic fluids, gear oils, and automatic transmission fluids (ATF).
Characteristics: Superior low-temperature properties and pour point depressant (PPD) synergy.
III. Polyisobutylene (PIB)
CAS Number: 9003-27-4
Best For: Two-stroke engine oils and specific industrial greases.
Characteristics: Excellent lubricity and clean-burn properties in combustion environments.
IV. Hydrogenated Styrene-Isoprene (HSD)
CAS Number: 68648-89-5
Best For: Premium top-tier synthetic engine oils.
Characteristics: Exceptional shear stability and balanced thickening efficiency.
【Comparative Performance Matrix】
Use the table below to select the appropriate VII technology for your production plant:
Polymer Type | Thickening Efficiency | Shear Stability | Low-Temp Performance | Primary Application |
|---|---|---|---|---|
OCP (EPM) | Excellent | Good | Moderate | PCMO / HDDO |
PMA | Moderate | Excellent | Superior | Hydraulic / ATF |
PIB | Good | Moderate | Fair | Greases / 2T Oils |
HSD | Superior | Superior | Good | Racing / High-End Synthetic |
【Industrial Application & Blending Guidance】
The selection of a Viscosity Improver is a balance between Thickening Efficiency (TE) and Shear Stability Index (SSI).
Preparation of Liquid Concentrates:
For factories using solid bales (EPM/OCP), the polymer must be dissolved in a carrier oil (typically Group I or II) at temperatures between 100°C–120°C. We offer both solid forms for cost-efficiency and pre-dissolved liquid concentrates for immediate blending.
Formulating Multi-Grade Oils:
By incorporating our VII additives, blenders can transform a thin base stock into an all-season oil (e.g., 5W-40). The polymer chains expand as temperature increases, compensating for the natural thinning of the base oil.
Shear Stability Management:
In high-shear environments like gearboxes or high-speed engines, polymer chains can "break." Chemost provides various SSI grades (SSI 24, 35, 50) to match the mechanical requirements of your target application.
【B2B Partnership & Documentation】
Chemost supports the global supply chain with a rigorous "Documentation First" policy. Every procurement package includes:
- Technical Data Sheet (TDS): Detailing molecular weight distribution and SSI.
- Material Safety Data Sheet (MSDS): Comprehensive GHS-compliant safety data.
- Certificate of Analysis (COA): Batch-specific verification of viscosity and purity.
【Frequently Asked Questions (FAQ)】
Q: Which VII is best for maximizing fuel economy?
A: PMA (Polymethacrylate) is often preferred for fuel-efficient formulations because of its excellent low-temperature fluidity, which reduces internal fluid friction during engine warm-up.
Q: Can I mix different types of Viscosity Improvers?
A: Yes, "hybrid" systems are common. Combining OCP for cost-effective thickening with a small amount of PMA can significantly improve the low-temperature cranking (CCS) properties of the oil.
Q: Do you offer different Shear Stability Indexes (SSI) for your OCP line?
A: Absolutely. We provide OCP in various grades ranging from high-shear-stable (low SSI) for long-drain diesel engines to high-thickening (high SSI) for industrial applications where shear is less critical.
Why Choose Us
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.
Key word：
Viscosity index improver
VII oil additive
Olefin Copolymer OCP
Polymethacrylate PMA
Polyisobutylene PIB
HSD additive
multi-grade oil formulation
lubricant viscosity modifier factory
3D虚拟展馆
抖音官媒
旗舰微商城
微信公众号
CheMost
CheMost Additives CO.,LTD
ADDRESS: CheMost Additives CO.,LTD, Jinzhou city, Liaoning provice, China
Copyright© 2025 CheMost Additives CO.,LTD
Website：300.cn jinzhou.300.cn | Privacy Policy