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1. Liansheng Chemical: Launched a new tubular continuous polymerization mass production process to replace traditional batch reactors. Single-line LS-944 production capacity reaches 8,000 tons per year; unit production energy consumption drops by 23.7%, solid salt by-product discharge is cut by 41.5%, and batch-to-batch molecular weight fluctuation narrows from ±320 to ±110, solving the pain point of unstable performance for bulk supply.
2. Fubiya Chemical: Mass production of a patented catalytic polycondensation process raises the total synthesis yield of LS-944 from the industry average of 82.3% to 91.6%, with waste solvent output reduced by 37%, complying with new EU REACH by-product limit regulations. Downstream benefits for buyers: Unit raw material procurement costs fall by 8%–12%, full-batch product performance consistency improves without separate small-batch sample testing; solid waste compliance indicators pass European and American environmental audits, eliminating additional environmental inspection fees for import customs clearance.
Lianlong adopts a two-stage synthesis method of pre-polymerization plus end-capping, stably controlling alkali metal (sodium/potassium ion) residues in LS-944 to ≤8ppm (compared with the old domestic industry standard of ≤30ppm). This breaks the previous bottleneck that domestic LS-944 could not enter the supply chain of modified PP materials for new energy vehicles, meeting impurity testing standards for interior materials of European and American automakers. Downstream benefits for buyers: Products can be directly used for modification of automotive interior and exterior parts and plastic battery housings without compounding impurity removal additives, cutting auxiliary formula costs by 5% and accelerating the efficiency of end vehicle manufacturers passing European and American automotive weather resistance certifications.
Changzhou Sunshine’s GW-944P grade achieves precise high molecular weight gradient control with a weight-average molecular weight Mw of 3,200, 30.6% higher than the domestic industry average of 2,450. After long-term thermal aging at 120℃, the yellowing index Δb drops from the industry average of 2.8 to 1.2, boosting outdoor weathering lifespan by 40%. Downstream benefits for buyers of agricultural films and outdoor plastic steel profiles: The required addition dosage decreases from 0.45 phr to 0.32 phr, extending the outdoor service life of end products from 3 years to 4.2 years and reducing scrap rates of finished goods.
Tianguang Auxiliaries implemented a fully automatic DCS granulation process, upgrading traditional fine powder LS-944 to uniform dust-free pellets with stable volatile content ≤0.7% (national standard ≤1.0%). Dust generation during feeding is reduced by 90%, compatible with closed automated loss-in-weight feeding equipment used by European and American plastic & rubber manufacturers. Downstream benefits for overseas processing plants: Feeding loss drops by 3%, eliminating risks of environmental penalties for workshop dust pollution, and reducing manual feeding labor hours through compatibility with automated production lines.
An iteratively modified grade launched in March 2026 delivers 96.7% tensile strength retention of PE substrates after 1,000 hours of accelerated UV aging (vs. 87.2% for the old grade). No precipitation or blooming occurs during instantaneous high-temperature extrusion at 280℃, overcoming the traditional shortcoming of easy migration and precipitation of LS-944 during processing of high-filled glass fiber-reinforced PP. Downstream benefits for buyers of high-end photovoltaic backsheets and thin-wall injection molded parts: Scrap rates for high-temperature extrusion processes drop by 7%, and the outdoor warranty term of end photovoltaic modules is extended from 25 years to 30 years.
Optimized molecular branched structure reduces the precipitation rate of LS-944 in transparent PP and PET systems to 0.08% (vs. 0.21% for the previous generation), with light transmittance at 425nm ≥95.2%. This resolves the problem of increased haze in transparent daily necessities and food-grade packaging, passing new EU testing standards for food-contact plastics. Downstream benefits for buyers of food packaging and transparent plastic containers: No need for compound synergistic additives, raising the yield of finished products with qualified light transmittance by 11% and enabling smooth entry into European and American food packaging supply chains.
Modified hydrolysis-resistant molecular groups limit the attenuation of light stabilization efficiency to ≤6% after 180 days of cyclic immersion in acid and alkaline rainwater at pH 3–11 (vs. 17% attenuation for the old grade), overcoming the traditional flaw of rapid failure of LS-944 in coastal high-salt-fog construction materials. Downstream benefits for buyers of coastal pipes and garden plastic construction materials in Southeast Asia, Europe and America: Service life of end products is extended by 50%, and after-sales compensation costs are greatly reduced.
Both brands simultaneously launched integrated pre-masterbatch LS-944 products with built-in antioxidant synergistic components. Buyers can directly replace dual formulations of light stabilizer plus antioxidant, simplifying formulas; masterbatch dispersibility improves by 25%, and low addition dosage meets weather resistance standards. Downstream benefits for plastic compounding factories: Reduced SKUs for raw material storage, shortened batching procedures, accelerated formula R&D cycles, and a 6%–9% drop in comprehensive raw material procurement costs.
1. Cost side: Process upgrades of leading domestic and foreign brands raise the effective content of LS-944 and lower required addition dosages, driving a universal 7%–13% decline in comprehensive raw material costs for downstream industries including plastic & rubber processing, agricultural film production, automotive compounding and construction materials.
2. Compliance side: Impurity and environmental indicators of all brands align with new REACH, RoHS and US FDA regulations, greatly boosting the pass rate of import customs clearance and overseas certification for buyers’ end products.
3. Product side: Upgrades to three core indicators (weather resistance, anti-yellowing performance and high-temperature resistance) extend the outdoor service life of finished plastic goods by 30%–45% on average, increasing premium pricing space for end consumer brands.
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