AT168 Secondary Antioxidant for PVC / PE Extrusion Processing Stability

• Product Overview:
AT168 appears as white powder with excellent purity and chemical stability. With a melting point of 183–187℃ and light transmittance ≥99% at 425nm, it maintains product clarity and color during extrusion.

• Function Mechanism:
AT168 decomposes hydroperoxides formed during processing, preventing polymer chain scission and molecular weight reduction. It works synergistically with primary antioxidants to enhance overall oxidation resistance.

• Processing Performance:
Low volatile content (≤0.2%) ensures minimal loss during high-temperature extrusion. AT168 is easily dispersed in PVC and PE systems, maintaining consistent antioxidant performance throughout production.

AT168 is the ideal solution for manufacturers seeking improved processing stability, color retention, and extended product service life.

Packing: 25kg/bag
Storage: Store in a cool, dry and well-ventilated place.
Shelf Life: 2 years under proper storage conditions.
Note: Keep away from moisture, heat and direct sunlight. Avoid contact with strong oxidizing substances.

1. Excellent Thermal Processing Stability

AT168 effectively decomposes hydroperoxides generated during PVC and PE extrusion, reducing melt degradation and maintaining viscosity.

2. Synergy with Primary Antioxidants

Combined with primary antioxidants, AT168 enhances the overall oxidation resistance, outperforming single antioxidant systems.

3. Color Protection & Transparency

High light transmittance ensures minimal impact on product color and clarity, preventing yellowing during extrusion and long-term heat exposure.

4. Low Volatility & Consistent Performance

Volatile content ≤0.2% reduces loss at high processing temperatures, ensuring stable antioxidant action batch after batch.

5. Extended Product Service Life

Improves long-term mechanical properties, impact strength, and durability of PVC pipes, PE films, and other extrusion products.

6. Solves Common Manufacturing Issues

Addresses melt degradation, surface defects, color changes, and premature aging, improving production efficiency and reducing rejection rates.

• PVC Pipes & Profiles – Enhances processing stability and prevents discoloration during extrusion.
• PE Films & Sheets – Improves oxidation resistance and maintains mechanical integrity.
• Cables & Wire Insulation – Provides thermal stability for insulation materials.
• Injection Molded Products – Maintains polymer chain integrity under high-temperature processing.

AT168 secondary antioxidant delivers reliable processing stability and long-term polymer protection wherever oxidation resistance is critical.

Maijisen is a technology-focused manufacturer of plastic processing additives, located in Kunshan City, Jiangsu Province. Established in 2009, Maijisen operates a domestic division in Kunshan and an international division in Shanghai, with 12,000㎡ production facilities and a 400㎡ R&D laboratory in Yancheng.

Our main products include Ca/Zn stabilizer, ACR processing aid, PVC processing aid, PVC foaming regulator, AC/NC foaming agent, lubricant and other innovative chemical additives. These products are widely used in PVC/WPC window profiles, foam boards, wall boards, WPC/SPC/LVT flooring, PVC pipes, cables, wires and footwear.

Guided by the philosophy of “Technology as the core, Quality as the root, Win-win cooperation,” Maijisen continuously develops new solutions through technical collaboration with research institutions. We warmly welcome your visit and long-term partnership.

Q1:What is the MOQ?

A:MOQ is about 1tons.

Q2:What if your payment term?

A:Payment terms:100% by T/T ,30% by T/T and 70% by L/C.

Q3:What about the delivery ?

A:Delivery date:10 days.

Q4:Can you supply free samples?

A:Of course,we can supply you 200g~500g per product.