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Product Overview |
Toluhydroquinone (THQ) is a aromatic dihydroxy monomer widely used as a chemical intermediate in the production of polyester resins and coating materials. We utilize catalytic hydrogenation technology. Our finished product has minimal by-products. Impurities are removed via recrystallization, with stringent control over metal ions.
It is particularly suitable for the formulation of high-performance saturated polyester resins for powder coatings and unsaturated polyester laminating resins,generally, a resin addition amount of two ten-thousandths can exert a good anti-polymerization effect during production and storage, and the stability of preventing resin hardening after anti-polymerization exceeds half a year.
THQ can also be used in thermosetting and radiation-curable coating systems, where its molecular structure can support high thermal stability, excellent UV resistance, and good mechanical properties. THQ-based polyester systems are also used in selected industrial coatings, printing inks and composite material applications. It can also be used as an antioxidant in non-edible oils, fats, fatty acid esters, flaxseed oil, etc., and is also applicable to pigments, dyes, and pharmaceutical intermediates.
Technical Specifications |
Test Item | Specification |
Appearance | Off-white crystal powder |
Assay | ≥99.0% |
Melting point | 125-128 ºC |
Residue on Ignition | ≤0.04% |
Metals | <10 ppm |
Loss on drying | ≤0.5% |
Absorptions K | ≤1.8(λ=440nm) ≤1.1(λ=520nm) ≤0.5(λ=750nm) |
Packaging & Storage |
Packaging: 25 kg/drum. Custom packaging can be discussed based on order quantity and transportation requirements.
Storage: It should be placed in a ventilated and dry place. Store below +30°C..
Storage & Handling Notes
For crystalline THQ, prolonged exposure to high temperature, direct sunlight or air oxidation may cause the material to discolor and degrade.
Shipping & Delivery |
Jinan, China
Immediately after payment
Qingdao / Tianjin / Shanghai / Ningbo
Sample Support
Samples are available for evaluation before bulk orders. Shipment arrangements depend on destination and applicable transportation requirements.
Factory & Quality Control |
Consistent quality control for each production batch.
Technical documents available upon request.
Samples available for product evaluation.
Custom specifications available upon request.
View Factory & Quality Control → View Technical Documents →
Applications |
Applications of Toluhydroquinone (THQ)
Toluhydroquinone (THQ) is an aromatic dihydroxy monomer widely used as a building block in polyester resin and coating formulations. Its molecular structure makes it particularly suitable for high-performance saturated polyester resins, radiation-curable resins, and selected high-end coating systems.
Polyester Resins & Powder Coatings
THQ is commonly used in the production of high-performance saturated polyester resins for powder coatings. Its aromatic structure can support high thermal stability, excellent UV resistance and outstanding mechanical properties, making it suitable for durable industrial coating applications.
Typical application areas include:
High-performance saturated polyester resins
Thermosetting powder coatings
General metal protective coatings
Architectural metal coatings
Industrial anti-corrosion coatings
Radiation-Curable & Thermosetting Coatings
THQ can be used in resin systems designed for UV-curable, EB-curable and thermosetting coatings. THQ-based polyester formulations may provide a useful balance of processability and coating performance, including resistance to chemicals, weathering, humidity and thermal aging.
It is particularly suitable for formulations where high heat resistance, outstanding weatherability and good film hardness are required.
Unsaturated Polyester Resins
THQ is also used as a dihydroxy monomer component in unsaturated polyester laminating resins. These resin systems are used in composite materials and applications requiring long-term weather-resistant resin performance.
Typical applications include:
Weather-resistant unsaturated polyester laminating resins
Advanced composite materials
Fiberglass-reinforced plastics
High-durability molded products
Printing Inks & Functional Composites
THQ-based resin systems can be used in printing inks and composite applications, particularly where UV resistance, thermal stability and long-term durability are important performance considerations.
The final performance of THQ in any resin or coating system depends on the complete formulation, monomer ratio, processing conditions, curing system, and intended end use. Customers should evaluate product suitability according to their specific formulation and application requirements.
FAQ |
Q: What is THQ used for?
A: THQ is mainly used in polyester resins, powder coatings, printing inks, and composite material applications.
Q: What kinds of transportation types can you provide?
A: We can provide a variety of transportation methods, including express delivery for shipments under 25 kg, sea freight for large-volume cargo, and air freight upon request.
Q: What pre-sales and after-sales support do you provide?
A: We respond within 24 hours and provide technical, order, and logistics support throughout the cooperation process.