Product Specification: Viscosity Index Improver (VII)

Product Name: Viscosity Index Improver (VII)
Chemical Type: Polymethacrylates (PMA), Olefin Copolymers (OCP), or Styrene-Diene Copolymers (e.g., Styrene-Isoprene-Styrene)
Form: Solid pellets, flakes, or liquid concentrate
CAS Numbers: Vary depending on polymer type (e.g., PMA: 9010-88-2)
Appearance: Clear to slightly hazy fluid (liquid form) or white to off-white solid (powder/pellets)

Description:

Viscosity Index Improvers (VIIs) are polymeric additives used in lubricant formulations to improve the oil's viscosity-temperature behavior. A high Viscosity Index (VI) means the lubricant experiences less viscosity change with temperature fluctuations, offering better protection over a wide temperature range.

VII additives enhance oil viscosity at high temperatures while maintaining fluidity at low temperatures, making them essential in multigrade engine oils, automatic transmission fluids, hydraulic oils, and gear oils. They ensure optimal lubrication, minimize wear, and extend service life under varying operating conditions.

Key Features:

• Improves Viscosity Index (VI): Maintains stable viscosity over a wide temperature range

• Thermal Stability: Designed for long-lasting performance under high-temperature conditions

• Shear Stability: Resists mechanical breakdown under high shear conditions in engines and gear systems

• Compatibility: Compatible with Group I–V base oils and most common additive packages

• Customized Performance: Available in different molecular weights and structures (linear, star, or comb polymers) to suit specific applications

Typical Properties:

Note: Specifications vary depending on the polymer type (PMA, OCP, SIS, etc.) and product formulation.

Applications:

• Automotive Lubricants: SAE multigrade engine oils (e.g., 10W-30, 5W-40), gear oils, and transmission fluids

• Industrial Lubricants: Hydraulic fluids, turbine oils, and compressor oils

• Grease Manufacturing: Used in grease formulations to improve thermal stability and flow

• Synthetic and Bio-Based Oils: Compatible with synthetic PAOs, esters, and biodegradable base stocks

Advantages:

• Enhances performance of lubricants in both cold start and high-load conditions

• Reduces oil consumption by maintaining optimal viscosity

• Prolongs lubricant service life and reduces frequency of oil changes

• Provides engine protection under various driving conditions

• Reduces wear and tear by ensuring continuous film strength

Packaging and Storage:

• Packaging: 25 kg bags (pellet/flake), 180 kg drums or IBC totes (liquid), bulk supply available

• Storage Conditions: Store in a cool, dry, well-ventilated area away from direct sunlight

• Shelf Life: Minimum 2 years when stored under proper conditions

Regulatory and Safety:

• Non-hazardous under normal handling conditions

• Complies with REACH, RoHS, and other global lubricant additive regulations

• Safety Data Sheet (SDS) available upon request

Note: Custom formulations and viscosity profiles available to meet client-specific requirements for performance, thickening efficiency, and shear stability. Contact technical support for formulation guidance.

Let me know if you'd like a version tailored to a specific polymer base (e.g., PMA vs. OCP) or lubricant system.