Solvay REGEFLEX 500 Catalyst

Features Of Solvay REGEFLEX 500 Catalyst

1. Highly selective for polyurethane elastomer and thermoplastic polyurethane (TPU) synthesis.

2. Thermally stable up to 180 °C, enabling robust processing in extrusion and casting operations.

3. Low volatility and minimal odor—supports safer handling and improved workplace air quality.

4. Compatible with aromatic and aliphatic isocyanates, including MDI, TDI, and H12MDI.

5. Non-amine-based, eliminating post-cure discoloration and enhancing UV stability of final products.

Typical Applications Of Solvay REGEFLEX 500 Catalyst

1. Cast elastomer systems for industrial rollers, seals, and wear-resistant components.

2. Thermoplastic polyurethane (TPU) compounds used in automotive interior trim and cable jacketing.

3. Reaction injection molding (RIM) formulations for lightweight structural parts.

4. Coating and adhesive systems requiring rapid demold time and low fogging.

5. 3D printing resins for high-resolution elastomeric prototypes and functional parts.

Specifications Of Solvay REGEFLEX 500 Catalyst

Solvay REGEFLEX 500 Catalyst – Frequently Asked Questions (FAQ)

Q1: What is the primary function of Solvay REGEFLEX 500 Catalyst in polyurethane systems?

A: Solvay REGEFLEX 500 Catalyst is a highly selective, non-tin, metal-free catalyst designed to promote the urethane reaction (isocyanate–polyol coupling) while minimizing side reactions such as trimerization or hydrolysis. It enables precise control over gel time and cure profile in flexible and semi-rigid PU foams, coatings, and elastomers.

Q2: Is Solvay REGEFLEX 500 Catalyst compatible with water-blown and low-VOC formulations?

A: Yes — it demonstrates excellent compatibility with water-blown systems and performs consistently across low-VOC and high-solids formulations. Its low volatility and absence of volatile organic solvents support compliance with evolving emissions regulations without compromising processing stability or final part performance.

Q3: How does REGEFLEX 500 differ from traditional amine-based catalysts in terms of odor and handling?

A: Unlike many tertiary amines, REGEFLEX 500 exhibits markedly lower volatility and reduced amine odor, enhancing workplace safety and operator comfort during handling and metering. It also offers improved storage stability and reduced sensitivity to moisture compared to highly reactive liquid amines.

Q4: What is the typical dosage range for REGEFLEX 500 Catalyst in standard flexible foam applications?

A: Dosage is formulation-dependent but generally ranges from 0.1% to 2% by weight relative to the polyol component. Optimal loading is determined through small-scale trials to balance reactivity, flow, and cell structure — it is typically used at low concentrations due to its high catalytic efficiency.

Q5: Can REGEFLEX 500 be used in combination with other catalysts?

A: Yes — it is frequently blended with complementary catalysts (e.g., gelling or blowing agents) to fine-tune system reactivity and foam morphology. Compatibility testing is recommended to confirm synergistic effects and avoid antagonism, especially when combining with strongly acidic or highly reactive components.