Polyurethane Catalyst QHA-TMR2 Product Data Sheet

Product Name: QHA-TMR2 | Chemical Name: 2-Hydroxy-N,N,N-trimethyl-1-propylamine formate (1-Propanaminium-2-hydroxy-N,N,N-trimethylformate) | CAS No.: 62314-25-4

Product Category: Quaternary Ammonium Salt Polyurethane Catalyst (Trimerization Catalyst) | Molecular Formula: C₇H₁₇NO₃ |

EC Number: 263-503-6 | UN Number: 3267 8/PG 3

1. Description

Polyurethane Catalyst QHA-TMR2 is a high-performance, delayed-action quaternary ammonium salt catalyst, primarily composed of 2-Hydroxy-N,N,N-trimethyl-1-propylamine formate. It is a colorless to pale yellow clear liquid with a slight ammoniacal odor, featuring strong catalytic selectivity and excellent chemical stability, specifically engineered for polyurethane (PU) and polyisocyanurate (PIR) foam manufacturing, as well as related industrial applications.

QHA-TMR2 is a dedicated trimerization catalyst that efficiently promotes the polyisocyanurate trimerization reaction of isocyanates, forming stable isocyanurate rings to enhance the thermal stability, flame retardancy and mechanical strength of foam products. Compared with potassium-based catalysts, it provides a more uniform and controlled reaction initiation, avoiding excessive exotherm or uneven foam rise. It also exhibits good compatibility with mainstream PU raw materials, including polyether polyols, polyester polyols, isocyanates and other auxiliary additives, and has a unique delayed-action performance that extends the processing window, improving the flowability of foam systems and facilitating complex mold filling. Additionally, it can be used for post-curing of flexible molded foams to optimize product performance.

2. Specification

The table below lists the typical physical and chemical properties of Polyurethane Catalyst QHA-TMR2, complying with industrial quality standards and strict quality control requirements, ensuring consistent product performance across batches:

3. Application

Polyurethane Catalyst QHA-TMR2 is a versatile, high-performance trimerization catalyst with broad applicability, mainly focused on polyurethane and polyisocyanurate foam production, with core advantages in controlled reactivity, enhanced flowability and improved foam performance:

• Polyurethane Rigid Foams (PU Rigid Foams): The core application, widely used in insulation foam formulations such as building exterior insulation panels, on-site spray foam insulation, refrigeration equipment (refrigerators, freezers) insulation layers, refrigerated truck insulation, and insulation plates/laminates. It shortens foam curing time, reduces residual -NCO content in the foam, and improves the mechanical properties and processing performance of the foam.
• Polyisocyanurate Foams (PIR Foams): Specifically used in PIR foam systems, it promotes the formation of isocyanurate rings at temperatures above 20°C (as a high-temperature catalyst), enhancing the foam’s thermal stability, flame retardancy and overall performance. Its mild reaction characteristics help shorten the release time of rigid foams, improving production efficiency.
• Flexible Molded Foams: Used for post-curing of flexible molded foams (such as automotive seats, furniture cushions), optimizing the curing effect and improving the resilience, dimensional stability and durability of the product.
• Other PU Products: Applied in polyurethane insulation pipes, packaging foams and other products, it improves the foam’s cell uniformity and structural integrity, and enhances the product’s resistance to high temperature and corrosion.
• It can be used alone as the main trimerization catalyst or blended with other amine catalysts (such as DMCHA, TEDA) to fine-tune reaction rates. The recommended dosage is 1.0–5.0% based on the weight of isocyanate in PU/PIR foam formulations, depending on the specific foam type and performance requirements. It is recommended to pre-mix QHA-TMR2 with polyol to ensure uniform dispersion in the system.

4. Storage & Handling

Storage Conditions

• Store in sealed original containers (180kg/drum, 25kg/drum or IBC drum) in a cool, dry, well-ventilated warehouse, away from direct sunlight, heat sources, open flames, and static electricity. The recommended storage temperature is 5–30°C; avoid prolonged exposure to high temperatures (above 40°C) to prevent viscosity change and performance degradation.
• Keep the product isolated from strong acids, oxidizing agents, and moisture to prevent chemical reactions, performance degradation, or contamination. For long-term storage, containers can be filled with nitrogen to avoid oxidation.
• Storage areas must be equipped with spill containment facilities and emergency response materials (adsorption materials, neutralizers such as dilute acetic acid) to handle potential leaks, and comply with local chemical safety and environmental regulations. The product is classified as a corrosive liquid, so corrosion protection measures should be strictly implemented.

Shelf Life & Handling Precautions

• Unopened shelf life: 12 months under recommended storage conditions. Conduct performance testing prior to use if expired. Once opened, use the product within 3 months and reseal tightly after each use to prevent moisture absorption and oxidation.
• Wear appropriate personal protective equipment (PPE) during handling, including chemical-resistant gloves, safety goggles, a protective coat, and anti-static shoes. Operate in a well-ventilated area or fume hood to avoid inhalation of vapors; use an air-purifying respirator for high-concentration operations. The product is corrosive and irritating to skin, eyes, and respiratory tract.
• In case of accidental contact: Flush skin or eyes with plenty of clean water for at least 15 minutes; seek medical attention promptly if irritation persists. In case of leakage, evacuate personnel, cut off fire sources, cover the spill with adsorption materials (such as diatomaceous earth or sand), neutralize with dilute acid if necessary, and dispose of waste in accordance with local hazardous waste regulations.
• Dispose of empty containers and waste liquid properly: clean empty containers thoroughly before disposal, and send waste liquid to a professional hazardous waste treatment agency to avoid environmental pollution. Do not pour directly into water bodies or sewers.

The information provided is based on current technical knowledge and practical application experience. Shijiazhuang Qihong  New Material Technology Co.,Ltd assumes no liability for losses caused by improper storage, handling, or application of the product. Users are recommended to conduct preliminary formulation tests to verify the product’s suitability for specific production processes and comply with all relevant safety regulations. Reference safety data sheet (SDS) for detailed hazard information.