Light Stabilizer LS-944: Customized Solution Case with Volatile Matter ≤0.3% & Transmittance (450nm) ≥95%

HiSiaddi is an innovative foreign trade service provider driven by dual engines of technology transformation and foreign trade services. We have established a "1+2+3+4=1" service system and can supply LS-944 light stabilizers sourced directly from multiple well-known original manufacturers. As a technology-driven foreign trade enterprise, HiSiaddi has repeatedly resolved customized product demands for LS-944 light stabilizers through technical collaboration with manufacturers and precise market insight. Below is a case illustrating how we addressed customized requirements for LS-944 light stabilizer.

Please contact HiSiaddi customer service if you need further customized service support.

I. Client Profile (High-End Mid-Tier Client)

Client: A premium outdoor polymer materials enterprise based in Switzerland (referred to as Company S) Industry Position: A world-leading supplier of high-end outdoor thin films and TPO composite materials. Its products are applied to high-end RV roofs, outdoor furniture and photovoltaic module encapsulation films, with cooperative brands including Swiss RIGO and German Covestro. The company implements ultra-high standards for raw material stability, weather resistance and cleanliness.

Procurement Demand: Custom high-purity, low-volatility, migration-resistant LS-944 light stabilizer (polymeric hindered amine HALS) with core indicators as follows: purity ≥99.9%, volatile matter ≤0.3%, ash content ≤0.05%, transmittance (450nm) ≥95%, molecular weight distribution ranging from 2200 to 2800. The product must adapt to extreme temperature fluctuations of -40℃ to 120℃ for high-end RV roof TPO composite materials, with a requirement of no yellowing, cracking or precipitation after 5 years of outdoor exposure.

Customization Pain Points: European original LS-944 carries high prices and long lead times (12 weeks). Three Chinese manufacturers contacted only provided standard grades (purity 99.5%, volatile matter ≤1.0%), failing to meet three customized indicators: ultra-low volatility, narrow molecular weight distribution and ultra-low impurity content. In addition, manufacturers were reluctant to conduct small-batch trial production. Company S faced stalled new product R&D and risks of missing peak European market orders.

II. Core Customization Challenges for the Client (Exclusive High-Difficulty Requirements for Mid-to-High-End Clients)

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Ultra-low volatile matter requirement (core technical barrier) Issue: Standard LS-944 features volatile matter ≤1.0%, while Company S demanded ≤0.3%. In high-temperature extrusion processes (180–200℃), ordinary grades tend to volatilize, resulting in surface bubbles and reduced gloss on thin films. Impact: Directly affects high-temperature processing stability and long-term outdoor weather resistance of TPO thin films. Excessive volatile matter would push product rejection rates above 20%.

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Narrow molecular weight distribution & low precipitation requirements Issue: Standard grades have a broad molecular weight distribution of 2100–3000. Low-molecular-weight fractions tend to migrate and precipitate, causing blooming and adhesion under -40℃ low temperatures. Company S required a narrow distribution of 2200–2800 to balance low-temperature toughness and high-temperature stability. Impact: RV roofs are exposed to extreme temperature swings year-round. Precipitation leads to surface stickiness and yellowing, impairing waterproof and anti-aging performance.

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Ultra-high purity & ultra-low impurity control Issue: Standard grades have purity of 99.5% and ash content ≤0.1%, while Company S required purity ≥99.9%, ash content ≤0.05% and metal ions ≤1ppm to avoid catalytic photoaging triggered by impurities and extend service life. Impact: Excessive impurities accelerate material aging and prevent passing the European 5-year outdoor weather resistance test (ISO 4892-3).

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Small-batch customization & fast delivery Issue: Company S needed a 50kg small batch for formula debugging and testing, while most manufacturers imposed a minimum order quantity of 500kg. Delivery within 4 weeks was required to align with its new product R&D cycle, yet standard lead times for Chinese manufacturers stood at 8–10 weeks.

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III. HiSiaddi Intervention: Technical Collaboration & Customized Development, Qualified Samples Delivered in 6 Weeks

Core Competencies: In-house R&D team, 2 strategic cooperative customized manufacturers and third-party testing laboratory resources dedicated to customized development of high-end additives. We promise to complete small-batch customization and full-item testing within 6 weeks, with full refunds for unqualified products.

Step 1: Technical Deconstruction & Formula Optimization to Break Volatility Barriers Actions: Collaborated with manufacturer technical teams to optimize polymerization and post-treatment processes for low volatility requirements:

· Adopted high-vacuum rectification and low-temperature crystallization processes to remove volatile low-molecular-weight fractions;

· Adjusted polymerization catalyst ratios to increase the proportion of high-molecular-weight components and control molecular weight distribution within 2200–2800;

· Optimized drying procedures with nitrogen-protected vacuum drying to reduce volatile matter from 1.0% to 0.28%.

Result: Bench-scale tests stably maintained volatile matter between 0.25% and 0.3%, fully meeting client standards.

Step 2: In-Depth Impurity Control to Achieve Ultra-High Purity Actions: Established a three-stage filtration and ion exchange purification system:

· Raw material screening: Adopted electronic-grade monomers to control initial impurities strictly;

· In-process purification: The entire reaction was conducted under nitrogen protection to avoid oxidized impurity formation;

· Deep filtration: Finished products passed through 0.1μm precision filter cartridges and ion exchange resin treatment to remove trace metal ions and ash.

Result: Purity reached 99.92%, ash content 0.03% and metal ions ≤0.8ppm, exceeding client specifications.

Step 3: Flexible Small-Batch Production & Full-Process Quality Control to Ensure Stability Actions: Coordinated manufacturers to open dedicated customized production lines for 50kg flexible small-batch production:

· Real-time central control monitoring: Key indicators including molecular weight, volatile matter and purity were tested every 2 hours;

· Phased sampling: Samples retained throughout bench, pilot and mass production phases, with 3 parallel test reports issued per batch;

· Third-party verification: Entrusted SGS to conduct full-item testing per client standards and issue a pre-report for the ISO 4892-3 weather resistance test.

Result: The 50kg customized samples underwent 4 weeks of production and 2 weeks of testing, delivered within 6 weeks with 100% compliance of all indicators.

Step 4: Custom Packaging & Technical Support for High-End Applications Actions:

· Custom double-layer aluminum foil bags with nitrogen-sealed packaging (2kg per bag) to prevent moisture absorption and oxidation;

· Provided German versions of 16-item SDS, REACH registration certificates and RoHS compliance reports;

· Dispatched technical engineers to Switzerland to assist the client with formula debugging and small-batch production, optimizing the additive dosage range of 0.3%–0.5%.

IV. Cooperation Outcome: From Customization Challenges to Long-Term Strategic Supplier

100% fulfillment of customized requirements: The initial 50kg sample passed full SGS testing and internal laboratory verification by Company S, meeting the 5-year outdoor weather resistance standard. Volatile matter hit 0.28%, purity 99.92%, and molecular weight distribution ranged from 2300–2700, fully satisfying requirements for high-end TPO materials.

High client recognition: R&D Director of Company S commented: "HiSiaddi is the most professional Chinese customization team we have partnered with. Its technical capabilities and response speed far outperform European suppliers, resolving our long-standing customization pain points." Procurement Director stated: "Qualified samples delivered in 6 weeks, priced 35% lower than European original manufacturers with lead times halved, providing critical support for us to seize market share."

Deepened long-term cooperation: 2025: Small-batch trial orders converted to stable annual procurement of 15 tons, with additional supporting purchases of antioxidant AO-1010 and light stabilizer LS-622. 2026: Listed as a global strategic supplier, jointly developing next-generation low-precipitation weather-resistant additives with shared technical data.

Word-of-mouth expansion: Company S recommended HiSiaddi to 3 Swiss peers in the outdoor materials sector, expanding market reach in high-end European additive markets.

V. Core Value of the Case (Aligned with Mid-to-High-End Client Positioning)

The client is a top-tier Swiss outdoor materials enterprise with stringent customized indicators (low volatility, narrow distribution, ultra-high purity) directly linked to its high-end product performance and market competitiveness, distinguishing it from price-sensitive low-end buyers. Customization challenges represented complex high-level technical barriers covering process optimization, impurity control and flexible production, requiring in-depth technical collaboration and tailored solutions. Rather than competing on low prices, HiSiaddi resolved issues relying on R&D capabilities, customized production resources and full-process quality control services, embodying the core competitiveness of high-end foreign trade integrating "technology + customization + service". The one-off customized cooperation evolved into a long-term strategic partnership, matching high-end clients’ procurement demands for stable supply, technical synergy and risk mitigation.

Please contact HiSiaddi customer service if you require further customized service support.