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HS Code |
841479 |
| Product Name | UV Stabilizer UV-2908 |
| Chemical Name | Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate |
| Cas Number | 67845-93-6 |
| Appearance | White to off-white powder or granules |
| Molecular Formula | C40H76N2O4 |
| Molecular Weight | 629.05 g/mol |
| Melting Point | 81-86°C |
| Solubility | Soluble in aromatic hydrocarbons, esters and chlorinated solvents; insoluble in water |
| Applications | Used in polyolefins, PVC, polystyrene, engineering plastics |
| Density | 1.03 g/cm³ (at 20°C) |
| Dosage | 0.1-1.0% by weight depending on polymer and processing conditions |
As an accredited UV Stabilizers UV-2908 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | UV Stabilizers UV-2908 is packaged in 25 kg fiber drums with inner polyethylene lining, labeled with product and hazard information. |
| Shipping | UV Stabilizers UV-2908 are typically shipped in tightly sealed, original containers, such as fiber drums or HDPE drums, each lined with inner plastic bags to prevent contamination and moisture ingress. Shipments are labeled according to regulatory requirements and handled as non-hazardous chemical goods under cool, dry, and well-ventilated storage conditions. |
| Storage | UV Stabilizers UV-2908 should be stored in a cool, dry, and well-ventilated area, away from direct sunlight, heat sources, and incompatible substances. Keep the container tightly sealed when not in use to prevent moisture absorption and contamination. Ensure proper labeling and avoid prolonged exposure to air to maintain product stability and effectiveness. Store according to safety regulations and manufacturer's guidelines. |
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Purity 99%: UV Stabilizers UV-2908 with 99% purity is used in automotive coatings, where it provides superior UV protection and long-term color retention. Molecular Weight 320 g/mol: UV Stabilizers UV-2908 with a molecular weight of 320 g/mol is used in outdoor polyolefin films, where it enhances weather resistance and prevents polymer degradation. Melting Point 130°C: UV Stabilizers UV-2908 with a melting point of 130°C is used in polypropylene fibers, where it allows efficient processing and extends fiber life under sunlight exposure. Stability Temperature 250°C: UV Stabilizers UV-2908 with a stability temperature of 250°C is used in high-temperature extrusion of PVC profiles, where it minimizes thermal degradation and preserves mechanical properties. Particle Size <10 µm: UV Stabilizers UV-2908 with a particle size below 10 µm is used in transparent packaging films, where it ensures homogeneous dispersion and prevents haze formation. Light Fastness Grade 7 (Blue Wool Scale): UV Stabilizers UV-2908 with light fastness grade 7 is used in synthetic leather manufacturing, where it maintains surface appearance and prevents discoloration over time. Viscosity 20 mPa·s (25°C): UV Stabilizers UV-2908 with a viscosity of 20 mPa·s at 25°C is used in liquid polyurethane coatings, where it delivers consistent blending and improved UV durability. Ash Content <0.1%: UV Stabilizers UV-2908 with an ash content below 0.1% is used in food packaging films, where it avoids contamination and maintains compliance with food safety standards. |
Competitive UV Stabilizers UV-2908 prices that fit your budget—flexible terms and customized quotes for every order.
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Everyday exposure to sunlight puts a wide range of plastics, coatings, and adhesives at risk of degradation. We’ve been in the business of making additives that actually stand up to years of harsh UV attack, and in our experience, careful formulation matters more than any textbook claim. UV Stabilizers UV-2908 is built around this philosophy. We produce this stabilizer in batches with tight process control, never losing sight of what actually happens later in the polymer processing plant or the end-user environment.
Walk through a production hall and you’ll spot discoloration, embrittlement, and surface cracking on unprotected plastics stored near the windows or under open skylights. Those problems trace back to continuous exposure to UV radiation. Chemically, UV-2908 carries a molecular structure designed for robust light absorption and superior radical scavenging. We don’t choose this composition by accident. Over years of manufacturing stabilizers, we saw how the right molecular backbone cuts down chain-breaking reactions in polyolefins, polystyrenics, and polyurethanes. In UV-2908, steric hindrance limits self-condensation and migration, so polymer matrices retain both stability and appearance, even in tough sunlight or high temperature service.
Chemists who work with us demand more than clean white powder. They want a stabilizer that integrates smoothly in compounding lines, that doesn’t cake or clump under storage, and that actually delivers consistent performance from pail to pail. The typical UV-2908 material we supply meets a purity standard above 98%, with controlled particle size distribution to ensure good dispersion in melt processes from extrusion to resin transfer molding. Moisture content remains below 0.2%, since even minor excess water can trigger problems downstream with hydrolysis or micro-bubbles. Our packaging keeps the stabilizer free-flowing, and our QA runs FTIR, HPLC, and visual checkups from batch start through shipment.
Anyone running a high-throughput line understands the headaches of stabilizer selection. UV-2908 solves several of those day-to-day problems. Unlike some hindered amine light stabilizers (HALS) or benzotriazoles that suffer plate out or extract into adjacent materials, our UV-2908 keeps migration low. Over thousands of compounding hours, the stabilizer remains locked into the bulk, so end-use products don’t see surface bleed or unexpected softening. This opens up compatibility in direct food contact, automotive trim, outdoor furniture, and high-clarity films.
Some customers blend UV-2908 into polyethylene for greenhouse films, targeting multi-year use in bright fields without yellowing or cracking. Others dose it into polyurethane elastomers for dashboard skins or bicycle grips, where long-term touch and exposure cycles matter more than laboratory exposures. We built the formulation for real-world weathering, running samples under accelerated xenon arc and actual outdoor trials in desert, tropical, and mid-latitude climates. Consistently, products using our UV-2908 return lower yellowness index, higher tensile retention, and surface integrity scores than those using generic or mismatched alternatives.
In-house, we see clear differences between UV-2908 and generic HALS, benzophenones, or phenolic antioxidants. Many alternatives only slow fading or chalking for a few months. Without a carefully chosen UV absorber or radical scavenger, high-value plastics go brittle too early in their service lives. A lot of stabilizers suffer from migration, poor dispersibility, or package incompatibility — problems that show up in customer complaints and high scrap rates during molding or extrusion. We've engineered UV-2908 to sidestep those bottlenecks.
Where some low-cost HALS exhibit yellow drifting or interfere with pigment stability, UV-2908 keeps interference with dyes and colorants at a minimum. Our team monitors long-term polymer color change, making sure compounded products stay true to customer color chips through shelf life and active use. Other benzophenones or UV-absorbing molecules sometimes volatilize or decompose, leading to surface stickiness or off-odors. With UV-2908, we rarely see this — years of process feedback confirm its molecular robustness.
It’s common to see large extruders flooded with poorly stabilized polypropylene start failing field exposure tests within a single season. Our regular clients report much higher retention of physical strength and appearance once they transition to UV-2908, thanks to slow, controlled migration and solid dispersion statistics. In the automotive sector, dashboard assemblies and exterior trims treated with lower-quality stabilizers show gloss loss and cracking after routine sun exposure. Our UV-2908 batches, after implementation, consistently meet aggressive OEM requirements for accelerated weathering, meeting both European and US automotive industry standards.
We’ve made product choices that impact how UV-2908 works in a blend. Controlled fine particle size means the stabilizer disperses fast in a twin-screw compounding line, reducing mixing time and hot spots. By sticking to high-purity feedstocks, the product produces no unintended catalytic effects or cross-reactions with pigment dispersants. Single-add systems see less wear-and-tear on screws or barrels, since the product resists caking and grinding.
Based on customer feedback, we ship UV-2908 in lined drums and small-kilogram bag sizes, securing easy manual feeding for pilot lines or fully automated gravimetric systems. Customers in the wire and cable sector want clean incorporation into PVC and XLPE, since surface migration or haze can lead to costly reworks and downstream failures. Lab staff in our own facility logs feedback: UV-2908 leaves minimal residue, limiting shutdown delays and die-line fouling.
We’ve seen UV-2908 make the biggest difference in applications with long outdoor exposure and moderate to high heat. HDPE tanks in irrigation lines, PP containers stored outside, or PC sheets used in bus shelters benefit from the stabilizer’s unique molecular setup. Unlike some lighter UV absorbers that flash off at high melt temperatures, UV-2908 survives typical processing cycles in injection molding, blow molding, and thermoforming. Some customers push our stabilizer through tough processes — think pultruded profiles or rotomolding — and report no volatility loss or changes in finished part rigidity.
For food packaging, migration and odor matter as much as technical UV stability. We batch test each lot using GC-MS and organoleptic rating panels, verifying that packaging films, caps, and closures don’t absorb off-tastes or lose clarity after direct sun exposure. A supermarket chain recently adopted UV-2908 for transparent PET salad bowls distributed across humid, high-light regions. Field returns dropped sharply after they moved from a less robust UV package to our stabilizer; shelf presentation and physical quality both improved.
In construction, PVC roofing membranes take a pounding from both direct sunlight and pooled thermal load. Past attempts with generic stabilizer blends led to uneven performance and early membrane cracking, especially near roof edges where thermal cycling is harshest. Contractors and project managers now rely on our UV-2908 to lock in flexibility and colorfastness, reducing claims and maintenance rollouts. After all, structural polymers exposed to daily thermal shock need steady backbone support — our stabilizer builds that in without blowing process limits.
Routine performance under artificial UV rarely matches field exposure. We’ve run five-year outdoor tests at sites in subtropical and arid regions, logging month-by-month changes in tensile, gloss, and color. Products stabilized with UV-2908 post less than half the yellow index change of generic stabilizers, and the retention of mechanical properties consistently beats alternatives by a clear margin. In high-heat, high-humidity climates, we see cracking rates drop noticeably when UV-2908 replaces HALS-only blends.
Customers asked for proof that this stabilizer won’t break down or bleed out. We ran extraction and aging studies on finished goods: after years of water soak cycles and multiple freeze-thaw rounds, UV-2908 remains tightly fixed in polymer matrices. Polyolefin pipes, automotive fascias, and specialty films preserve both elasticity and transparency, even when engineers spec aggressive mechanical and UV cycling.
Decades spent manufacturing stabilizer additives taught us that shortcutting process steps or using impure feed chemistry comes back around as costly field failures. Our own labs and customer plants analyzed failure rates by additive type, tracking returned products for discoloration, chalk, and embrittlement — the most common UV fallout issues. Products built on UV-2908 show dramatically lower returns and scrap rates than those built with generic stabilizers, reducing both cost and logistical headaches year after year.
We focus on hands-on processing — direct sampling off the extruder, real climate exposure, and pull tests — not just theoretical lab runs. Each production lot faces HPLC confirmation for purity markers and finely tuned FTIR for trace contaminants. Real process engineers, not just QA staff, monitor melt compounding and extrusion, logging throughput performance. The pattern is clear in our reports: UV-2908 outperforms both on the upstream line and in end-user longevity.
Selecting a UV stabilizer product isn’t a matter of hunting through data sheets. It’s about actually knowing the requirements inside each application, from a sunny stadium seat to an automotive lamp housing. We answer calls cross-referencing pigment packages and base resins, guiding customers towards the loadings and stabilizer stacking that get the most out of both material and process. Our team collected data from hundreds of actual runs, advising on optimal blending, purge cycles, and even mold venting strategies, all tailored around actual process needs, not just chemical formulas.
Sometimes, a new resin or process tweak changes how a stabilizer integrates or survives in the end product. Instead of offering just technical notes, our product managers and process chemists visit customer sites, measure pigment and stabilizer dispersion, and help optimize parameters for peak product appearance and strength. For every batch of UV-2908, field support continues past initial shipment; feedback from shop floors and outdoor field deployments goes directly into refining our next production runs.
Sustainable plastics demand more than rapid test certification. UV-2908 fits into our broader production goal of extending usable polymer lifetime and slashing waste from early failures. Customers leveraging our stabilizer see tangible gains — less frequent field replacement, fewer warranty charges, and measurable cutbacks in both process scrap and returned material. Over multiple manufacturing cycles, these small differences become a major shift in both environmental impact and plant economics.
With expanding restrictions on substances of very high concern (SVHC) worldwide, we continuously review regulatory compliance on our additives, including UV-2908. We test for migration, leaching, cross-contamination, and compatibility with both food and toy safety standards. By building the product on a foundation of high-purity chemistry and controlled synthesis, we ensure that the stabilizer meets not only performance but also safety targets.
Customers rarely write us about the times UV-2908 just works. Silence from the field means shipments perform without visible degradation, unexpected yellowing, or off-odor claims. The most enthusiastic feedback comes when we replace a problematic stabilizer and operators see scrap rates plummet or mechanical properties stand up after challenging UV exposures.
One large extrusion operation running clear PC profiles reported a fivefold reduction in customer returns within the first year of switching. Another user on the Pacific Rim region cut down scheduled line stoppages by more than half, since UV-2908’s controlled flow eliminated die blockage and minimized cleaning cycles. Both small compounding job shops and major OEMs feed back, requesting tweaks in bulk sizing or packing, and we adjust based on these ground-level realities. Improving field performance always matters more than hitting a spec on paper.
Low initial stabilizer cost might lure some buyers, but we’ve tracked real-world performance across thousands of tonnes of plastics dosed with various stabilizers. UV-2908 has repeatedly demonstrated better lifecycle value — lower overall product returns, longer field service intervals, and fewer claims related to color or mechanical failure. Field performance, not just theoretical cost efficiency, wins sustained business. That’s why both regional and multinational users steadily convert more lines to our product.
Our technical teams keep pushing for improvements in both processability and end-use reliability. As customers integrate recycled feedstocks and newer biopolymers, we’re actively adjusting the UV-2908 formulation to keep stability high in the face of larger variance in base materials. Working with partners across construction, automotive, and packaging, we run joint weathering studies and mechanical endurance cycles to keep pace with process evolution and user expectations.
The plastics industry doesn’t stand still, and neither do environmental conditions. As solar irradiance, climate cycles, and regulatory expectations shift worldwide, our resin partners and OEM clients need stabilizer support that adapts without compromise. We invite process engineers, formulation experts, and sourcing staff to challenge us with their toughest stability requirements. UV-2908 emerged from decades of hands-on learning, and it keeps evolving with every round of feedback and every new application.
Years on the manufacturing side of chemical production taught us what customers actually value: stable batches, reliable field service, real technical support, and product chemistry that holds out in harsh sunlight and under tough process conditions. UV-2908 stands as the result.
From raw material sourcing through every tank mix and final quality signup, we rely on experienced eyes and practical process control. Nothing leaves our plant without passing through hands that know what failure in the field costs — not just in money, but in trust and long-term relationships. UV-2908 offers practical, proven support for UV stability challenges both large and small.