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Guangzhou Yourun Company focuses on the research and development of polyurethane formula components, especially polyurethane catalysts and additives. Yourun has developed a series of eco-friendly PU catalysts which are ideal substitutes for mercury, lead and tin catalysts in different application fields, especially in CASE field. 


As a professional PU compound manufacturer, Yourun produces and exports various Polyurethane Catalysts, Polyurethane Additives and Polyurethane components. The company has a complete range of polyurethane compounds with different properties, which can solve the pain points of polyurethane application industries and meet the requirements of environmental protection.


Polyurethane compound features

- Electrical Insulation:
Polyurethane compounds provide superior insulation, essential for electrically sensitive applications.

- Versatile Resilience:
Customizable resilience levels ensure optimal performance in shock absorption and high-frequency recovery.

- Strong Bonding:
PU systems bond effectively with a variety of materials, enhancing their utility in diverse applications.

- Environmental Durability:
Resistant to extreme temperatures and chemicals, these polyurethane resins are ideal for harsh environments.

- Antimicrobial:
Naturally resistant to mold and mildew, with options for enhanced resistance in polyester materials.

- Color Customization:
A wide range of pigments and UV protection for outdoor stability in color retention.

- Economical Production:
Efficient for both prototyping and large-scale manufacturing, polyurethane chemical with a broad weight range capability.

- Quick Turnaround:
Shorter lead times and lower tooling costs compared to thermoplastics, expediting production.

Polyurethane Raw Material
Polyurethane (PU) materials from Yourun Synthetic Material are engineered to offer resilience, flexibility, and durability. These synthetic thermoset polymers are crafted from polyols and diisocyanates, creating a cross-linked structure that can be customized into various forms.Polyurethane materials features◆ Elasticity and Resilience:Exhibiting high elasticity, polyurethane returns to its original shape post-deformation, showcasing excellent resilience.◆ Versatility in Formulation:Polyurethane compound can be tailored to achieve different densities and hardness levels, from soft foams to rigid materials.◆ Thermal Stability:Retaining properties across a broad temperature range, polyurethane ensures reliable performance in varying conditions.◆ Abrasion and Impact Resistance:With high abrasion resistance and the ability to absorb and dissipate impact energy, PU material stands up to wear and tear.◆ Chemical and Water Resistance:Polyurethane resists a broad spectrum of chemicals, including oils, solvents, and water, making it suitable for diverse environments.◆ UV and Flame Retardancy:Certain formulations offer UV resistance to prevent degradation, and flame retardancy to enhance safety.◆ Material Compatibility:Polyurethane bonds effectively with various substrates, ensuring strong adhesion in multiple applications.◆ Biocompatibility:Selected formulations are biocompatible, positioning polyurethane for use in medical and healthcare sectors.Considering the application of polyurethane is quite various, Yourun polyurethane materials are classfied according to the application or end products, such as PU raw material for PU Elastomers and PU parts, PU Sport Track & PU Sport Floor,  Waterproof Coating and Floor Coating, PU Adhesive & Sealant, PU Rigid Foam and Flexible Foam, PU Leather Resin, PU Coatings & Paints, PU Grouting Reinforced Material, Etc.
Polyurethane Catalyst
Polyurethane catalysts are specialized chemicals that enhance the production of high-quality polyurethane systems. By reducing the activation energy required for chemical reactions, these PU catalysts enable faster reactions at lower temperatures. The polyurethane compound remains unchanged after the reaction, efficient and sustainable in the manufacturing process.These PU catalysts play a crucial role in increasing reaction rates and managing gelling times. They help balance side reactions, particularly the water reaction, which is vital for controlling gas formation and foaming. This precise control leads to improved product consistency and performance in polyurethane applications.In today's increasingly stringent environmental protection requirements, the limit requirements of organic mercury, lead and tin catalyst in various global environmental protection laws and regulations are getting lower and lower, even reaching the forbidden level that can not be detected. The selection of environmental protection catalysts to replace organic mercury, lead and tin catalyst has become a necessary choice for polyurethane manufacturers.Yourun polyurethane accelerators are roughly divided into general purpose type and functional type, which fully meet the specific needs of various fields of polyurethane.Polyurethane catalysts applications◆ Coatings: PU accelerators improve the flow and cure characteristics of PUR and PIR systems, leading to enhanced coating performance and durability.◆ Adhesives: Catalysts contribute to better adhesion properties, making them indispensable in the formulation of high-strength adhesives.◆ Sealants & Elastomers: Polyurethane catalysts ensure better foam yield and ease of handling, which is crucial for effective sealing and elastomer production.◆ Rigid Foam: In rigid foam production, catalysts help in achieving the desired cellular structure and physical properties.◆ PU Flexible Foam: PU catalysts play a vital role in the creation of flexible foams used in various applications, from furniture to bedding.
Polyurethane Additives
In view of the application problems in the subdivided field of polyurethane, Yourun also provides other functional PU additives other than PU catalysts, such as Defoaming Agent, Abrasion-resistant Agent, Antistatic Agent, Anti-yellowing Antioxidant, Release Agent, Moisture Removing Agent, Foam Inhibitor, Anti-settle Dispersing Agent, Viscosity Reducer, etc.Polyurethane additives features◆ Diverse Functional Additives: Functional PU additives are designed to enhance the performance of polyurethane products.◆ High-Quality Formulations: Each additive is meticulously formulated to provide specific improvements to polyurethane properties, ensuring enhanced durability, appearance, and processability.◆ Customizable Solutions: Polymer additives can be tailored to meet specific customer requirements, offering flexibility and adaptability for various polyurethane applications.◆ Industry-Standard Compliance: All polyurethane auxiliaries are manufactured to meet stringent industry standards, ensuring reliability and consistency in performance.Polyurethane additives applications◆ Polyurethane Manufacturing: Ideal for enhancing the performance of polyurethane products in various manufacturing processes, including foam production, coatings, adhesives, and elastomers.◆ Foam Inhibition: PU Defoaming Agents are designed to prevent and eliminate foam formation during the mixing and processing stages.◆ Surface Enhancement: Antistatic and Anti-yellowing Agents improve the surface quality and appearance of polyurethane products, ensuring they remain visually appealing over time.◆ Durability Improvement: Abrasion-resistant Agents and Antioxidants enhance the mechanical properties and longevity of polyurethane materials.◆ Process Optimization: Viscosity Reducers and Dispersants improve the processing characteristics of polyurethane formulations, ensuring smooth production and consistent quality.Company advantages◆ In-House Production: We operate our own production base with an annual capacity of 15,000 tons, reliably meeting industry demands.◆ Quality and Innovation: Guangzhou Yourun holds innovation patents and has achieved ISO quality management system certification, ensuring high standards of polyurethane resin accessories quality and continuous innovation.◆ Industry Recognition: As a director unit of the China Polyurethane Industry Association and a member of multiple industry associations, we enjoy a high reputation across various polyurethane sub-sectors.◆ Comprehensive Product Range: We offer a full suite of polyurethane compounds with diverse performance profiles, covering polyurethane coatings, adhesives, sealants, elastomers, and foam products. Our solutions address industry pain points, meet environmental standards, and can be customized to meet specific customer needs.
Polyurethane Adhesive
Yourun series of Polyurethane Adhesives are the ideal bonding agent between CPU and metal,bonding agent between CPU or TPU and metal,bonding agent between CPU and nylonAt Guangzhou Yourun,  our CUBD Series Polyurethane Adhesives have been engineered to tackle your toughest bonding challenges—whether you’re marrying PU elastomers to metal, securing TPU components, or fusing nylon to flexible substrates. Each formulation delivers just the right balance of wetting power, flexibility, and long-term durability, so your products stand up to vibration, temperature swings, and moisture without fail.Spotlight on CUBD SeriesCUBD-NL04: A one-component masterwork for nylon-to-PU bonds—ideal when you need a seamless, fatigue-resistant join in footwear, textiles, or soft-good assemblies.CUBD-2: The go-to primer/adhesive for PU-to-metal applications, offering rapid tack and a high-tensile bond that thrives in automotive trim, appliance housings, and more.CUBD-3625: Our premium two-part system engineered for the most demanding environments—excellent chemical resistance, low shrinkage, and a controlled cure profile that keeps your line moving.Why Yourun PU Adhesives?·  Tailored FormulationsFrom moisture-cure one-parts to customizable two-component systems, pick the cure speed and viscosity that match your process.·  Built-In DurabilityOutstanding resistance to oils, solvents, UV and thermal cycling means fewer recalls and happier end-users.·  Versatile Substrate CompatibilityTested on metals, engineering plastics, TPU, nylon, composites—you name it, we bond it.
Polyurethane Chain Extender
At Guangzhou Yourun, we specialize in the development and production of polyurethane chain extenders (also known as PU chain extenders), formulated with eco-friendly, MOCA-free technology. These products feature low odor, low volatility, and excellent thermal stability. By accurately extending and crosslinking polyurethane molecular chains, our chain extenders significantly enhance mechanical strength and weather resistance, making them ideal for high-performance applications such as athletic tracks, transparent LED potting, and PU soft rollers.Key FeaturesPrecision Molecular Chain Extension: Optimizes chain segment distribution, balancing elasticity and hardness to improve impact strength and fatigue resistance.Eco-Friendly Formulation: MOCA-free, low VOC emissions, compliant with RoHS, REACH, and other international standards.Excellent Processability: Moderate viscosity and high reactivity, adaptable to various polyether or polyester polyol systems.Thermal Stability: Maintains mechanical performance and dimensional stability from –40°C to 120°C, suitable for extreme conditions.Multiple Grades Available: Including TDMA-02, TDMA-G55, TDMA-G90, TDMA-M86, and TRP to meet diverse application needs.Main ApplicationsPU Athletic Tracks: Enhances abrasion resistance and anti-cracking performance, extending service life.Transparent LED Potting: Offers high transparency, anti-yellowing, and UV resistance.Polyurethane Soft Rollers: Improves resilience, oil resistance, and wear performance.High-Performance Adhesives & Coatings: Boosts bonding strength and chemical resistance.Customized PU Products: Tailored formulations and support for specific customer requirements.Why Choose YourunReliable Quality: Comprehensive quality control system, with over 99.8% pass rate.Technical Expertise: Years of experience in polyurethane innovation with multiple patents.Responsive Service: 24/7 technical support and pre-sale/post-sale assistance.Global Reach: Products exported to 80+ countries with stable and on-time delivery.Custom Solutions: Sample trial production and formula adjustment based on client needs.Get in touch with our technical consultants today to request free samples or discuss a tailored formulation for your PU chain extender application. Unlock superior performance for your polyurethane products with Yourun!
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