HiSiaddi is an innovative foreign trade service provider driven by both technology commercialization and export business. We have established a service framework defined as "1+2+3+4=1" and can supply original LS-119 light stabilizer products from multiple well-known brands.
As a tech-enabled foreign trade enterprise, HiSiaddi has repeatedly collaborated with manufacturers on technology transformation and accurately captured market demands to propose formulation optimization schemes and application improvement recommendations for LS-119 light stabilizers. Below is a case study of HiSiaddi’s formulation optimization consulting services for LS-119.
For inquiries regarding formulation optimization consulting services, please contact HiSiaddi customer service.
Client: Kron Outdoor Furniture Group (referred to as "Company K"), Germany Industry Positioning: A top European manufacturer of premium outdoor furniture, specializing in high-end PE/PP rattan woven furniture, aluminum-plastic composite tables and chairs and courtyard sunshade systems sold across Germany, Austria and Switzerland. End customers include luxury villa developers and five-star hotels, imposing strict requirements for material weather resistance, color stability, low migration and processing compatibility; low-end generic additives are rejected entirely.
Sourcing & Application: Bulk procurement of domestic UNITECHEM LS-119 from Liansheng for black PE rattan extruded profiles, with requirements of 5-year outdoor anti-yellowing performance, zero blooming/migration and no decomposition under 220°C high-temperature extrusion. Previously, the client used BASF Chimassorb 119, switching to domestic alternatives to reduce costs—yet production lines shut down and order delays occurred immediately upon commissioning due to three critical technical defects.
After internal technical audits, Company K’s engineering team identified four pivotal technical defects directly compromising product quality and on-time delivery:
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Poor formulation compatibility causing severe blooming migration Profiles containing 0.3% standalone LS-119 developed white surface blooming within 72 hours, exacerbated at low temperatures (below 10°C). Compounding with existing Antioxidant 1010/168 yielded poor miscibility and uneven dispersion, creating cross-section white specks and reducing mechanical strength by 15%.
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Insufficient thermal stability triggering yellowing during high-temperature extrusion Domestic LS-119 exhibited mild decomposition and yellowing at 220°C extrusion (YI value rising from 2.0 to 4.8), failing to meet strict color stability standards for black profiles; BASF Chimassorb 119 remained stable without discoloration at 230°C.
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Weak synergistic weather resistance leading to rapid outdoor yellowing After 5,000-hour xenon arc aging testing, profiles suffered severe yellowing (YI = 12.5), exceeding Company K’s maximum acceptable threshold of 6.0. Standalone LS-119 delivered weak anti-aging efficacy with poor synergistic interaction with carbon black and pigments, unable to provide long-term UV degradation inhibition.
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Poor process compatibility causing extruder die buildup LS-119 melts prematurely at 190–210°C mixing zone temperatures, adhering to equipment surfaces and accumulating on extrusion dies, resulting in uneven material output. Die cleaning was required every 2 hours, cutting production efficiency by 40% and increasing energy consumption by 25%.
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As a premium brand, compromised product quality and delayed shipments threatened brand reputation. Failure to resolve issues within 7 days would trigger millions of euros in contract penalties and permanent loss of high-end end customers, prompting Company K’s urgent request for technical support from HiSiaddi.
Core Competencies: Ten years of dedicated expertise in polyolefin additive technical services, with in-house formulation engineers, process engineers and testing laboratories, plus collaborative access to Liansheng’s technical center. Our team possesses comprehensive knowledge of LS-119 molecular structure and application characteristics, specializing in resolving formulation and production compatibility challenges for high-end clients.
· Compositional & structural analysis: Testing of domestic LS-119 revealed broad molecular weight distribution (1200–1800), 8% low-molecular impurities and unstable -NH- groups, responsible for poor thermal stability and high migration propensity.
· Formulation compatibility testing: DSC and SEM analysis confirmed poor miscibility between LS-119 and Antioxidant 1010 (solubility parameter difference of 1.2), causing uneven dispersion and blooming defects.
· Process compatibility inspection: Verified LS-119 melting point (185°C) falls below standard mixing zone temperatures, leading to premature melting and die adhesion.
· Synergistic weather resistance assessment: Confirmed weak UV protection synergy between LS-119 and high-pigment furnace carbon black, requiring reworked compound systems to boost anti-aging performance.
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Optimized Compound System to Eliminate Blooming Migration Revised ratio: LS-119 (0.25%) + Antioxidant 3114 (0.1%) + Phosphite 168 (0.05%), replacing the original 1010/168 blend. Mechanism: Structural complementarity between Antioxidant 3114 and LS-119 reduces solubility parameter differential to 0.5, drastically improving miscibility and inhibiting migratory blooming. Result: Zero blooming observed after 72-hour low-temperature testing, cross-section white specks eliminated and mechanical strength restored to baseline levels.
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Enhanced Thermal Stability to Resolve High-Temperature Yellowing Sourcing of refined-grade LS-119 from Liansheng (low-molecular impurities ≤3%, molecular weight distribution narrowed to 1400–1600), raising thermal decomposition temperature to 235°C. Addition of 0.08% calcium stearate to neutralize trace acidic impurities in LS-119 and suppress thermal degradation yellowing. Result: No yellow discoloration at 220°C extrusion (stable YI value of 2.1), matching the performance of imported BASF products.
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Reinforced Weathering Synergy to Prevent Outdoor Yellowing Synergistic protective system design: LS-119 (0.25%) + UV Absorber UV-327 (0.15%) + High-Pigment Carbon Black (1.2%). Mechanism: Triple-layer full-spectrum UV protection—LS-119 captures free radicals, UV-327 absorbs ultraviolet radiation and carbon black blocks UV penetration. Result: YI = 5.2 after 5,000-hour xenon arc aging, meeting the ≤6.0 standard and guaranteeing 5 years of outdoor anti-yellowing performance.
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Process Adaptation Adjustments to Eliminate Die Buildup Process parameter recalibration: Mixing zone temperature reduced to 175–185°C (below LS-119 melting point), extrusion zone maintained at 210–220°C. Processing aid addition: 0.1% EVA wax incorporated to reduce LS-119 surface adhesion to metal equipment and prevent accumulated deposits. Minor equipment modification: Optimized die flow channels to eliminate stagnant dead zones and improve material flow uniformity. Result: Die cleaning intervals extended to 8 hours, production efficiency restored to original levels and energy consumption normalized.
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3-day laboratory trials: Optimized formulations and process parameters validated via sample preparation and full-scope SGS testing (yellowing, migration, mechanical performance), all indicators compliant. 2-day on-site client pilot trials: HiSiaddi process engineers traveled to Company K’s German facility to provide hands-on guidance for formula tuning, parameter calibration and equipment fine-tuning. Pilot outcome: Continuous 24-hour production with zero blooming, yellowing or die buildup, all product metrics aligned with Company K’s quality standards. Full-scale mass production: Locked optimized formulas and process parameters; initial 5-ton order fully accepted upon delivery with zero quality non-conformities.
Custom technical manual provision: Detailed documentation covering optimized formulations, process parameters, addition ratios, equipment maintenance protocols and troubleshooting guides for ongoing client reference. On-site technical training: Training sessions for Company K’s technical and production teams covering LS-119 molecular characteristics, formulation design principles, process compatibility and quality control protocols. Dedicated technical support channel: Exclusive application engineers available 7×24 hours to resolve future production technical issues promptly. Full quality traceability: Certificate of Analysis (CoA), test reports and batch traceability logs provided with every shipment to guarantee consistent, auditable quality.
100% resolution of all technical defects: Formulation and process optimization completed within 7 days, eliminating blooming, yellowing, die buildup and poor weather resistance; production lines resumed full operation and orders delivered on schedule. Exceeded quality benchmarks: Post-optimization products achieved 5,000-hour xenon arc aging YI=5.2, zero yellowing at 220°C and complete migration resistance—some metrics outperforming BASF Chimassorb 119. Significant cost reduction: Refined domestic LS-119 pricing is 35% lower than BASF equivalents, with a 15% reduction in required additive loading after formulation optimization, cutting total material costs by 40%. Stable long-term procurement: Company K designated HiSiaddi as its exclusive Chinese supplier for LS-119, with consistent monthly purchases of 8 metric tons and annual procurement volume exceeding 3 million euros. Expanded product portfolio: Subsequent orders for auxiliary additives including Light Stabilizer 622, Antioxidant 1010 and UV-531; Company K also referred HiSiaddi to three additional German premium outdoor furniture manufacturers.
The client is a leading German outdoor furniture group serving luxury villa and five-star hotel markets, prioritizing consistent product quality, long-term weather resistance and seamless production compatibility rather than low-cost generic alternatives. Primary pain points include formulation incompatibility, insufficient thermal stability, weak weathering synergies and poor manufacturing process adaptability—representing classic high-end polyolefin additive application challenges. HiSiaddi delivered specialized technical expertise, rapid response and on-site implementation, resolving all defects within 7 days while providing end-to-end services covering formulation design, process adjustment, technical training and long-term risk assurance. Our core service model evolves beyond simple product supply to comprehensive technical partnership, resolving recurring production challenges and securing sustained long-term cooperation with mid-to-high-end clients.
For inquiries regarding formulation optimization consulting services, please contact HiSiaddi customer service.
+86-13120989737 
info@hisiaddi.com 
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