Polyurethane Thickener PT-A

Polyurethane Thickener PT-A – High-Molecular-Weight Rheology Modifier for Oil-Based Systems

Product Overview
PT-A is a high-molecular-weight polyurea-based thickening agent designed to modify the rheological properties of oil dispersions, creams, and lubricating greases. It forms an associative network through hydrogen bonding and physical crosslinks, effectively increasing viscosity, improving stability, and providing thixotropic behavior. This makes it suitable for a wide range of applications, including greases, cosmetics, and high-viscosity industrial systems.

Product Specifications

• Appearance: White powder

• Odor: Non-offensive

• Particle Size: ≥99% passing 80 mesh sieve

• Moisture Content: ≤0.5%

Typical Performance in Lubricating Greases
When used at 10% concentration in base oils, PT-A provides the following typical properties:

• Base oil (500N): Kinematic viscosity at 40°C – 90.64 mm²/s; at 100°C – 10.42 mm²/s; Viscosity Index – 96. Worked cone penetration – 267 (0.1 mm); Dropping point – 309°C; Copper strip corrosion – Pass; Oil separation (24h at 100°C) – 0.9%.

• Base oil (PAO10): Kinematic viscosity at 40°C – 62.49 mm²/s; at 100°C – 10.29 mm²/s; Viscosity Index – 153. Worked cone penetration – 295 (0.1 mm); Dropping point – 307°C; Copper strip corrosion – Pass; Oil separation (24h at 100°C) – 1.3%.

Key Features

• Excellent thickening efficiency – builds viscosity at low concentrations.

• High dropping point (>300°C) – provides thermal stability for high-temperature applications.

• Good shear stability – maintains consistency under mechanical stress.

• Corrosion protection – passes copper strip corrosion test.

• Compatible with mineral and synthetic base oils.

Applications

• Lubricating greases for automotive and industrial use.

• Cosmetic creams and lotions requiring viscosity control.

• High-viscosity dispersions and sealants.

• Oil-based formulations needing rheological modification.

Handling and Storage

• Products are hygroscopic – keep sealed during storage.

• May form lumps after prolonged storage (break before use; performance unaffected).

• Contains fine particles that may become airborne – ensure ventilation and operator protection to prevent dust accumulation and explosion risks.

• Refer to Safety Data Sheet for detailed safety information.

Packaging
Available in standard packaging (e.g., 25 kg bags or drums). Custom packaging upon request.

Quality Assurance
Each batch is tested for moisture content, particle size, and thickening efficiency to ensure consistent performance.