UV531 UV Absorber for PVC / WPC / PE Outdoor Weather Protection

• Product Overview:
UV531 UV Absorber appears as light yellow powder with stable chemical structure and excellent compatibility with PVC, WPC and PE systems. It is widely used in extrusion and injection molding products exposed to long-term sunlight.

• Performance Characteristics:
This UV Absorber features high light transmittance (440nm ≥97.0%; 500nm ≥98.7%), ensuring minimal impact on product transparency and color. With a melting point of 48–49℃ and good thermal stability, UV531 performs reliably during high-temperature processing.

• Protection Mechanism:
The UV Absorber converts harmful UV energy into harmless heat energy, preventing polymer chain breakage, discoloration, chalking and mechanical property loss.

For manufacturers seeking durable outdoor materials, UV531 UV Absorber is a cost-effective and reliable solution.

Packing: 20kg/drum
Storage: Store in a cool, dry and well-ventilated warehouse.
Shelf Life: 2 years under proper storage conditions.

1. Excellent UV Protection Performance

UV531 UV Absorber provides strong absorption in the UV-B and partial UV-A region. Compared with conventional UV Absorber grades, UV531 shows higher stability under long-term exposure, effectively delaying yellowing and surface cracking of PVC and WPC profiles.

2. Enhanced Weather Resistance

Outdoor PVC decking, WPC wall panels, PE pipes and sheets often suffer from fading and brittleness. By incorporating UV531 UV Absorber, manufacturers can significantly improve weather resistance, extending product service life by reducing UV degradation.

3. Environmental Compliance

This UV Absorber complies with mainstream environmental standards and does not contain heavy metals. It meets the increasing regulatory requirements of Europe, Middle East and Southeast Asia markets, helping buyers reduce compliance risks.

4. Excellent Compatibility & Processing Stability

UV531 UV Absorber demonstrates excellent dispersion in PVC, WPC and PE systems. It does not cause blooming or plate-out during extrusion, ensuring stable production and smooth surface finish.

5. Cost-Effective Stabilization Solution

Compared with high-cost UV stabilizer systems, UV531 UV Absorber provides an optimized balance between performance and price. It solves common procurement pain points such as inconsistent quality, unstable supply and poor outdoor durability.

6. Technical Support & Supply Reliability

We provide consistent batch quality control, technical formulation support and fast delivery. As a long-term UV Absorber supplier, we understand the extrusion industry’s requirements for stable additive performance.

UV531 UV Absorber is widely used in various outdoor plastic applications:

• PVC Profiles & Panels
Suitable for PVC window profiles, wall panels, ceiling panels and decorative boards exposed to sunlight. The UV Absorber effectively prevents yellowing and brittleness.

• WPC Decking & Outdoor Flooring
In WPC decking systems, UV531 UV Absorber improves color retention and reduces surface chalking under strong UV radiation.

• PE Pipes & Sheets
For agricultural pipes, outdoor sheets and protective films, this UV Absorber enhances long-term durability and mechanical strength.

• Outdoor Furniture & Construction Materials
UV531 UV Absorber helps maintain appearance and structural integrity in garden furniture and building materials.

Wherever long-term UV resistance is required, UV531 UV Absorber provides reliable protection.

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.