High Shear Stable OCP (HSD)

Product Overview

Modern engine oils and industrial lubricants are increasingly required to maintain stable viscosity under severe mechanical stress while meeting demanding OEM and international performance specifications. In these applications, the shear stability of the viscosity index improver becomes a critical formulation parameter.

High Shear Stable OCP (HSD) is an advanced olefin copolymer viscosity index improver supplied by SiNDA through qualified international manufacturing partners for lubricant manufacturers and industrial formulators.

Developed with a polymer architecture optimized for improved resistance to permanent mechanical shear, High Shear Stable OCP provides effective viscosity index improvement while helping finished lubricants retain viscosity during extended service and high-shear operating conditions.

The product is compatible with Group I, Group II and Group III base oils and is suitable for high-performance passenger car motor oils, heavy-duty diesel engine oils, hydraulic fluids, industrial gear oils and other lubricant formulations where viscosity retention is a key performance objective.

Key Benefits

• High shear stability polymer technology
• Improved viscosity retention after mechanical shear
• Effective viscosity index improvement
• Consistent multigrade performance
• Reliable viscosity control throughout lubricant service life
• Compatible with Group I, Group II and Group III base oils
• Suitable for demanding automotive and industrial lubricant formulations
• Consistent blending characteristics
• Suitable for high-performance lubricant development
• Supported by technical documentation and international supply

Operational Applications

High Shear Stable OCP (HSD) is designed for lubricant manufacturers requiring excellent viscosity retention under high mechanical shear conditions and long service intervals.

Typical applications include:

• Passenger Car Motor Oils (PCMO)
• Heavy-Duty Diesel Engine Oils (HDEO)
• Long Drain Engine Oils
• SAE 5W-30, 10W-30, 15W-40 and other multigrade engine oils
• Hydraulic Oils
• Industrial Hydraulic Fluids
• Industrial Gear Oils
• General Industrial Lubricants

Application suitability should always be verified through formulation development and finished-lubricant performance testing.

Technical Overview

High Shear Stable OCP (HSD) is based on an ethylene-propylene olefin copolymer engineered with a polymer architecture that minimizes permanent viscosity loss caused by mechanical shear.

Compared with conventional viscosity modifiers, HSD polymers are designed to improve resistance to permanent molecular degradation under severe mechanical shear, helping finished lubricants retain viscosity-building capability throughout their intended service life.

The primary technical objective of High Shear Stable OCP is not maximum thickening efficiency, but long-term viscosity retention. This enables lubricant formulators to develop multigrade lubricant formulations capable of maintaining their designed viscosity after prolonged exposure to mechanical stress.

The balance between viscosity index improvement, shear stability and formulation efficiency makes High Shear Stable OCP particularly suitable for modern engine oils that must comply with demanding API, ACEA and OEM viscosity retention requirements.

Performance Characteristics

Excellent Shear Stability

The polymer architecture is optimized to resist permanent mechanical degradation during service.

Benefits include:

• Reduced permanent viscosity loss
• Improved viscosity retention
• Stable multigrade performance
• Consistent lubricant viscosity throughout service intervals
• Reliable performance under severe operating conditions

Actual shear performance depends on the finished formulation and should be verified using recognized industry test methods.

Reliable Viscosity Index Improvement

High Shear Stable OCP effectively improves the viscosity index of finished lubricants, allowing better viscosity control across a broad operating temperature range.

Final viscosity index depends on:

• Base oil selection
• Polymer concentration
• Additive package
• Finished lubricant viscosity grade

Performance should be confirmed through laboratory evaluation.

Long-Term Viscosity Retention

One of the principal advantages of High Shear Stable OCP is its ability to maintain lubricant viscosity after prolonged mechanical stress.

This characteristic is particularly valuable for:

• Long-drain engine oils
• Heavy-duty diesel lubricants
• High-performance passenger car engine oils
• Industrial lubricants operating under continuous load

Reliable Blending Performance

The product is supplied as an oil-based polymer concentrate suitable for conventional lubricant manufacturing processes.

Under recommended blending conditions it provides:

• Uniform polymer dissolution
• Excellent blending consistency
• Stable production batches
• Reliable formulation repeatability

Complete dissolution should always be confirmed before incorporating temperature-sensitive additive components.

Base Oil Compatibility

High Shear Stable OCP is compatible with:

• Group I Base Oils
• Group II Base Oils
• Group III Base Oils

Compatibility should be validated during formulation development, particularly when high proportions of Group III or synthetic base stocks are used.

Recommended validation includes:

• Polymer dissolution
• Finished oil clarity
• Storage stability
• Filterability
• Low-temperature performance
• Post-shear viscosity retention

Compatibility and Limitations

High Shear Stable OCP is intended for formulations where viscosity retention is more important than maximum thickening efficiency.

Performance depends on several formulation variables, including:

• Base oil composition
• Polymer concentration
• Additive package compatibility
• Target SAE viscosity grade
• Required HTHS viscosity
• Low-temperature properties
• Finished lubricant performance targets

Although the product offers improved resistance to mechanical shear, final performance must always be confirmed in the complete lubricant formulation using appropriate ASTM and OEM test procedures.

Selection Guidance

High Shear Stable OCP is recommended for lubricant manufacturers seeking:

• Excellent shear stability
• Improved viscosity retention
• High-performance multigrade engine oil formulations
• Long-drain lubricant development
• Compliance with demanding viscosity-retention requirements
• Stable performance in severe operating conditions

Applications primarily focused on maximum thickening efficiency or reduced polymer dosage may be better served by High Molecular Weight OCP grades.

Product selection should consider the balance between:

• Shear stability
• Thickening efficiency
• Low-temperature performance
• Base oil compatibility
• Target viscosity grade
• Overall formulation objective

Compliance & Technical Documentation

High Shear Stable OCP is supplied by SiNDA through qualified international manufacturing partners.

Available documentation includes:

• Technical Data Sheet (TDS)
• Safety Data Sheet (SDS)
• Certificate of Analysis (COA)
• Batch Quality Documentation
• Storage and Handling Guidelines
• Export Documentation

Typical values published in technical literature are provided for guidance and should not be interpreted as guaranteed specifications unless confirmed by the manufacturer and batch-specific COA.

Why Choose SiNDA

SiNDA provides lubricant manufacturers with reliable access to internationally sourced viscosity index improvers supported by technical expertise and consistent commercial supply.

Advantages include:

• Responsive technical support during formulation development

• Qualified international manufacturing partners
• Consistent product availability
• Technical evaluation support
• Batch traceability
• Comprehensive documentation
• SiNDA commercial packaging
• International logistics support
• Assistance with supplier qualification and RFQ processes

Frequently Asked Questions

What is High Shear Stable OCP (HSD)?

High Shear Stable OCP is an olefin copolymer viscosity index improver designed to maintain lubricant viscosity under severe mechanical shear conditions.

What is its main advantage?

Its primary advantage is excellent shear stability, helping finished lubricants retain viscosity throughout extended service intervals.

Is it suitable for modern engine oils?

Yes. It is commonly evaluated for high-performance PCMO, HDEO and other multigrade engine oils where viscosity retention is a critical performance requirement.

Which base oils are compatible?

The product is compatible with Group I, Group II and Group III base oils, although compatibility should always be confirmed during formulation development.

How is shear stability evaluated?

Shear stability is typically assessed using standardized laboratory methods such as ASTM D6278 or ASTM D7109, depending on formulation requirements.

How is the correct treat rate determined?

The optimum treat rate depends on the target viscosity grade, base oil viscosity, additive package, shear stability requirements and overall formulation design. Laboratory testing is recommended.