Hydroxyl Terminated Polyurethane Systems

Overview of Hydroxyl-Terminated Polyurethane Resins

Hydroxyl-terminated polyurethane systems are characterized by their isocyanate-free structure and hydroxyl-terminated end groups. These systems are primarily used in lamination processes and offer a range of customizable features to meet specific application requirements.

Customizable Features of Hydroxyl-Terminated Polyurethane Systems:

1. Reactivity: Adjustable rates of reaction to suit different processing needs.
2. Polymer Structures: Tailored to provide varying degrees of chemical and physical resistance.
3. Functionality: Available with two or more reactive sites for diverse application needs.
4. Design Options: Can be formulated as solvent-based, water-based, or solvent-free systems.
5. Viscosity: Customized to achieve desired viscosity values.
6. Hydroxyl Numbers: Adaptable to different hydroxyl numbers, allowing for various mixing ratios.

Formulation and Compatibility:

Hydroxyl-terminated polyurethane products can be formulated as either two-component or multi-component systems. The hardening components used with these resins are typically polyisocyanate resins (isocyanate-terminated resins), which are selected based on the solvent content and the specific requirements of the application.