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 proposed formula optimization schemes and application improvement recommendations for LS-944 light stabilizers through technical collaboration with manufacturers and precise market insight. Below is a consultation case regarding formula optimization for LS-944 light stabilizer.
Please contact HiSiaddi customer service if you need further formula optimization consultation services.
Client: A leading Italian high-end plastic products group (Enterprise M) Core Business: Premium outdoor artificial turf and landscape plastic profiles supplied to European municipal engineering and high-end landscape brands, with products required to pass EU EN weather resistance standards. End customers impose strict demands on product appearance and service life.
The client had long used imported European additives and is a typical mid-to-high-end client prioritizing technical performance and application effects, rather than purely price-driven low-volume purchasers.
Procurement Background: Domestic LS-944 light stabilizer was purchased for anti-aging modification of polyolefin plastic profiles.
After Enterprise M trialed domestic LS-944, successive abnormalities emerged during formula debugging and mass production, forcing production line speed reduction and stalling the new product project:
1.
Poor compatibility with the formula system, resulting in blooming on product surfaces After compounding LS-944 with base resins, antioxidants and lubricants, extruded plastic profiles developed white powdery precipitation (blooming) on surfaces after 72 hours of storage, rendering appearances unqualified for end-market sales. The client initially suspected insufficient purity of the active ingredient.
2.
3.
Pungent odor and excessive flue gas during high-temperature processing At extrusion temperatures of 190~210℃, irritating odors filled the workshop with prominent flue gas at equipment exhaust ports, deteriorating workshop working conditions and reducing surface gloss of profiles.
4.
5.
Failure to pass outdoor accelerated weather resistance testing Xenon lamp weather resistance testing conducted per European standards revealed yellowing and significant mechanical strength degradation after only 3,000 hours, falling far short of the client’s 5,000-hour weather resistance requirement.
6.
The client’s technical team repeatedly adjusted additive dosage ratios and processing temperatures without resolving the issues, subsequently raising technical inquiries with our team.
HiSiaddi, a technology-focused domestic additive foreign trade firm, deploys application engineers and formula analysts who collaborated with upstream manufacturer technical departments to conduct full-process troubleshooting and corrective implementation.
Step 1: Sample Testing to Locate Root Causes Samples of the LS-944 batch used by the client were submitted for testing, combined with on-site working condition analysis to identify three root triggers:
· High residual low-molecular-weight byproducts in the product incompatible with formula lubricants, leading to slow migration and precipitation at room temperature (blooming);
· Excess residual monomers and low-boiling fractions decomposing under high processing temperatures to generate odors and flue gas;
· Uneven polymerization degrees in certain batches with insufficient high-molecular-weight fractions, reducing light stabilization efficiency and shortening weather resistance lifespan.
Step 2: Collaborate with Manufacturers to Optimize Product Indicators at the Source Coordinated with production teams to adjust post-treatment processes:
· Upgraded multi-stage high-vacuum devolatilization procedures to thoroughly remove low-molecular impurities and residual monomers, lowering volatile fractions;
· Fine-tuned polymerization processes to narrow molecular weight distribution and raise the proportion of effective high-molecular-weight components for enhanced anti-aging performance;
· Added dedicated compatibility and thermal stability testing prior to factory delivery to tighten outgoing quality standards.
Optimized LS-944 samples were sent to the client for retesting.
Step 3: On-Site Guidance to Optimize Client Formulas & Production Processes Application engineers were dispatched to the Italian manufacturing plant for on-site service with targeted optimizations:
· Formula optimization: Adjusted dosage ratios between LS-944, primary antioxidants and internal/external lubricants based on optimized product characteristics to reduce component repulsion and completely eliminate blooming;
· Production parameter adjustment: Recommended segmented temperature control and reduced temperatures in high-temperature zones of the main extruder without compromising molding quality, alongside modified screw speeds to minimize thermal decomposition of additives, fully resolving odor and flue gas issues;
· Process training: Delivered training to client technical and production staff on standardized storage, feeding and mixing protocols for LS-944 to prevent secondary abnormalities.
Step 4: Follow-Up Testing to Verify Long-Term Service Performance Assisted the client with accelerated weather resistance testing. Products using the optimized formula with improved LS-944 successfully passed the 5,000-hour xenon lamp aging test with no yellowing, cracking or mechanical strength degradation, meeting all performance indicators.
All three core technical challenges were fully resolved, restoring full-capacity production lines and lifting product yield from 82% to 98%. The client recognized our technical expertise, abandoning plans to revert to high-priced European imported additives and formally switching to stable procurement of domestic LS-944 from us. A long-term technical linkage mechanism was established, with the client conducting additive matching testing with us in advance for all subsequent new product formula development. The client gradually transferred supporting additives including antioxidants and other grades of light stabilizers to our supply portfolio, continuously expanding cooperation categories.
This service targeted high-end European plastic brands, addressing typical high-end manufacturing application challenges centered on additive compatibility, thermal stability and practical application performance. Instead of simply replacing goods, we delivered full-chain technical services including component testing, product process improvement and on-site formula & production debugging to implement targeted solutions. Professional technical expertise secured trust from high-end clients, upgrading our partnership from pure product trading to technical service-based cooperation.
Please contact HiSiaddi customer service if you need further formula optimization consultation services.
+86-13120989737 
info@hisiaddi.com 
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