Eco-friendly Weather-resistant Heat stabilizer HF789 for PVC leather

Product Name：
Eco-Friendly Weather-Resistant Ca/Zn Heat Stabilizer HF789 for PVC Leather

Special Instruction:

Product Introduction：

1. Product Overview：
HF789 is a high-performance calcium-zinc (Ca/Zn) heat stabilizer specifically engineered for PVC leather products. As an eco-friendly additive, it effectively addresses the common challenges of aging, decomposition, and performance instability during processing and service life. By inhibiting the degradation of PVC molecular chains, HF789 significantly improves the overall quality and durability of leather products, making it an essential component for manufacturers producing high-end and export-oriented PVC leather.

2. Product Principle：
HF789 functions through a synergistic calcium-zinc stabilization mechanism. During PVC processing, the calcium and zinc organic compounds neutralize hydrogen chloride released by thermal degradation, preventing catalytic decomposition of the polymer. The calcium component provides long-term stability by forming stable calcium chlorides, while the zinc component ensures excellent initial color hold and processing stability. The auxiliary organic compounds enhance compatibility with PVC resins and other additives, promoting uniform dispersion and effective stabilization throughout the leather matrix. This balanced system prevents discoloration, embrittlement, and surface defects, ensuring consistent product quality.

3. Performance Characteristics：
HF789 delivers outstanding thermal stability with a heating loss ≤2%, volatile component ≤2%, and thermal weight loss <8%, ensuring clean processing with minimal smoke, odor, or plate-out. The initial melting point above 55°C provides early activation and sustained protection throughout the processing cycle. The product is free from heavy metals such as lead and cadmium, fully complying with EU ROHS and international environmental standards. It exhibits excellent compatibility with PVC substrates, plasticizers, dyes, and other additives, without affecting the color or hand feel of leather. The stabilizer also improves weather resistance, preventing fading, cracking, and hardening caused by light, heat, humidity, and chemical exposure.

4. Usage and Dosage：
Recommended addition level is 3–5% based on total PVC formulation weight. For standard PVC leather applications such as garments, luggage, and shoe materials, 3.5–4.5% typically provides optimal stabilization and processing performance. For high-end or export-oriented products requiring superior weather resistance and color retention, dosages toward 5% are recommended. Systematic trials should be conducted to fine-tune the dosage for specific formulations, equipment, and performance requirements.

Product Advantages：

1. Excellent Thermal Stability and Color Hold
HF789 effectively prevents degradation, discoloration, and embrittlement during PVC leather processing. It maintains consistent color and mechanical properties even under prolonged thermal exposure, ensuring high-quality finished products.

2. Enhanced Weather Resistance
The stabilizer significantly improves resistance to light, high temperature, humidity, and chemical media. PVC leather treated with HF789 resists fading, cracking, hardening, and aging, maintaining its appearance and performance over extended service life.

3. Improved Processing Performance
HF789 enhances the softness and toughness of PVC leather, reducing defects such as creases, damage, and bubbles during extrusion, calendering, and other processing steps. It promotes uniform plasticization and melt homogeneity, reducing scrap rates and improving production efficiency.

4. Environmentally Friendly and Heavy-Metal-Free
HF789 contains no lead, cadmium, or other restricted heavy metals. It fully complies with EU ROHS, REACH, and global environmental standards, making it suitable for high-end and export-oriented PVC leather products.

5. Excellent Compatibility with Additives
HF789 exhibits outstanding compatibility with PVC substrates, plasticizers, dyes, and other processing aids. It does not affect the color or hand feel of leather, ensuring that the final product retains its original appearance and soft texture.

6. High Cost-Effectiveness
A relatively low addition level of 3–5% achieves ideal stabilization, making HF789 suitable for mass production. It helps manufacturers reduce processing costs while improving product quality and market competitiveness.

7. Clean Processing with Minimal Plate-Out
Low volatile content and controlled thermal weight loss ensure clean processing with minimal smoke, odor, or die buildup. This extends production runs, reduces maintenance downtime, and maintains a safe working environment.

8. Versatile Across Multiple PVC Leather Applications
HF789 performs effectively in a wide range of PVC leather products, including garments, luggage, footwear, and furniture, providing formulation flexibility and consistent performance.

General instructions:

Packing: 25 kg/bag
Storage: Conventional storage
Processing: Valid for 2 years
Note: Store in a cool, dry warehouse away from heat, sunlight, moisture, and incompatible substances like acids or alkalis.

Applications：

1. PVC Garment Leather
HF789 is widely used in PVC leather jackets, gloves, and other apparel products. Its excellent weather and wear resistance improve durability and aesthetics, preventing fading, cracking, and hardening after prolonged wear and washing.

2. PVC Luggage Leather
For PVC leather bags, suitcases, and similar products, HF789 provides good scratch and moisture resistance, resisting daily friction and humidity. It extends the service life of luggage while maintaining a neat appearance.

3. PVC Shoe Material Leather
In PVC leather shoes, sports shoe uppers, and other footwear components, HF789 ensures comfort and durability during long-term use. It prevents brittleness, cracking, and deformation caused by frequent bending and friction.

4. PVC Furniture Leather
For sofas, seats, and other furniture leather applications, HF789 meets environmental and quality requirements, adapting well to mass production scenarios.

5. Export-Oriented PVC Leather
HF789 complies with international environmental standards, making it ideal for export-oriented PVC leather products destined for Europe, Americas, and Southeast Asia.

6. High-End PVC Leather Products
For premium leather goods requiring superior color retention and weather resistance, HF789 delivers the stabilization needed to maintain appearance and performance over time.

7. PVC Leather for Automotive Interiors
In automotive interior leather, HF789 provides excellent heat and light stability, preventing degradation and maintaining surface quality under harsh conditions.

8. PVC Synthetic Leather for Various Applications
HF789 is suitable for a broad range of synthetic leather products, including fashion accessories, upholstery, and decorative items, offering consistent stabilization and processing performance.

Company Introduction：
Kunshan Maijisen Composite Material Co., Ltd. is a technology-driven manufacturer of innovative plastic processing additives. Our main product lines include stabilizers, acrylic impact modifiers, PVC processing aids, foaming regulators, foaming agents, lubricants, and other advanced chemical additives. Our products are widely used in WPC and PVC window profiles, foam boards (furniture boards, advertising boards, construction boards), WPC wall panels, WPC and SPC flooring, pipes and fittings, cables, and footwear.

RFQ：

1. What is the MOQ?
   MOQ is about 1 ton.

2. What are your payment terms?
   Payment terms: 100% T/T, or 30% T/T + 70% L/C.

3. What about delivery?
   Delivery time: 10 days.

4. Can you supply free samples?
   Yes, we can supply 200g–500g per product for testing.