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Highly selective bismuth-based catalyst for polyurethane foam production.
Low toxicity profile compared to traditional amine or tin catalysts.
Excellent hydrolytic stability and shelf life under standard storage conditions.
Enables balanced reactivity between gelling and blowing reactions in flexible slabstock foams.
Non-volatile and non-corrosive, supporting safer handling and reduced VOC emissions.
Flexible polyurethane slabstock foam manufacturing.
Automotive seating and interior cushioning systems.
Furniture foam components requiring low-emission profiles.
Carpet underlay and packaging cushioning foams.
Water-blown and low-VOC polyurethane formulations.
| Chemical Type | Bismuth carboxylate complex |
| Product Form | Liquid |
| Appearance | Clear to slightly hazy amber liquid |
| Primary Applications | Polyurethane flexible foam catalysis |
| Key Features | Low toxicity, high selectivity, hydrolytic stability |
| Benefits | Reduced amine odor, improved foam cell structure, compliance with Eco-label requirements |
| Storage Conditions | Store in original sealed container at 15–30°C; protect from moisture |
| Handling Precautions | Use in well-ventilated areas; refer to SDS for PPE guidance |
Q1: What is the primary function of Shepherd BiCAT 8106 in polyurethane systems?
A: Shepherd BiCAT 8106 is a bismuth-based catalyst designed to promote urethane formation (reaction between isocyanates and polyols) while offering significantly reduced toxicity and environmental impact compared to traditional tin-based alternatives like DBTDL. It provides balanced reactivity, good pot life control, and reliable cure performance in flexible and rigid foams, coatings, and adhesives.
Q2: Is BiCAT 8106 compatible with other catalysts commonly used in PU formulations?
A: Yes, BiCAT 8106 is generally compatible with amine catalysts (e.g., DABCO, TEDA) and other metal-based catalysts such as potassium acetate or zinc carboxylates. Synergistic combinations are often employed to fine-tune gel and blow balance. Compatibility testing under actual formulation conditions is recommended to confirm performance and avoid unexpected interactions.
Q3: How does BiCAT 8106 compare to traditional tin catalysts in terms of hydrolytic stability?
A: Bismuth catalysts like BiCAT 8106 exhibit superior resistance to hydrolysis compared to stannous compounds, making them more suitable for moisture-sensitive applications and formulations containing hydrophilic components. This enhanced stability contributes to improved shelf life and consistent catalytic activity over time.
Q4: What is the typical dosage range for BiCAT 8106 in industrial PU formulations?
A: Dosage depends on formulation requirements and desired reaction profile, but BiCAT 8106 is typically used at low concentrations—generally ranging from 0.1% to 2% by weight relative to the polyol component. Optimization through small-scale trials is advised to achieve target processing characteristics and final properties.
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E-mail: wangxingqiang@ericwchem.com
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