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Antioxidant 1135

    • Product Name Antioxidant 1135
    • Alias Irgafos 1135
    • Einecs 404937-18-6
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    779125

    Chemical Name 2,4-Bis[(octylthiomethyl)]-6-methylphenol
    Cas Number 125643-61-0
    Molecular Formula C29H52O1S2
    Molecular Weight 480.85 g/mol
    Appearance Clear light yellow liquid
    Solubility Insoluble in water, soluble in organic solvents
    Application Polymer antioxidant
    Melting Point < -20°C
    Boiling Point Decomposes before boiling
    Storage Conditions Store in dry, cool, well-ventilated area
    Stability Stable under recommended storage conditions
    Density 0.97 g/cm³ (20°C)
    Flash Point > 150°C
    Odor Slight characteristic odor
    Usage Level 0.05-0.5% by weight in polymers

    As an accredited Antioxidant 1135 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Antioxidant 1135 is typically packaged in 200 kg net weight steel drums, featuring secure sealing and clear, labeled identification for safety.
    Shipping Antioxidant 1135 is shipped in sealed, airtight containers, typically drums or cartons, to prevent moisture and air exposure. It should be stored and transported in a cool, dry, well-ventilated area away from direct sunlight and incompatible substances. Handle with care to avoid leaks or spills, complying with chemical transport regulations.
    Storage Antioxidant 1135 should be stored in a cool, dry, and well-ventilated area, away from direct sunlight, heat, and sources of ignition. The container must be kept tightly closed and protected from moisture and strong oxidizing agents. Proper labeling and safety precautions should be observed to prevent contamination and ensure safe handling during storage.
    Application of Antioxidant 1135

    Applications of Antioxidant 1135 in Industrial Manufacturing

    As a manufacturer specializing in high-purity Antioxidant 1135, we supply this raw material to diverse industrial sectors. It provides long-term polymer stability under harsh processing and end-use conditions. Below, explore how leading downstream industries apply Antioxidant 1135 in specialized formulations and finished products.

    1. Polyurethane Foam Manufacturing

    Companies in the flexible and rigid polyurethane sectors use Antioxidant 1135 to mitigate thermal oxidation during both foaming and curing processes. Its liquid character enables direct mixing into polyol blends without pre-dissolution, essential for minimizing discoloration and mechanical property loss in insulation, furniture, and automotive foam systems. Antioxidant 1135’s hydrolytic stability ensures it remains effective throughout high-temperature injection, block foaming, and continuous slabstock lines, supporting extended shelf life and performance consistency, especially where reactivity control proves critical.

    Industry compliance standards

    • REACH Regulation (EC) No 1907/2006
    • U.S. EPA TSCA Inventory
    • EN 14315: Thermal insulating products for buildings
    • GB/T 18801: China polyurethane limits for consumer goods

    Typical usage ratio

    • 0.1–0.5% weight of total polyol content, adjusted based on desired foam properties and processing temperature profile

    Downstream process integration

    • Added to polyol premix tanks prior to polymerization; in continuous lines, metered via in-line dosing to ensure accurate distribution before mixing with isocyanates

    Final product types

    • Refrigerator and freezer insulation panels
    • Automotive seat cushions and dashboards
    • Flexible bedding foams
    • Spray foam building insulation

    2. Polyolefin Compounding

    Major polyolefin compounders and masterbatch producers incorporate Antioxidant 1135 to protect polyethylene and polypropylene materials from oxidative degradation under shear, extrusion, and end-use UV exposure. It is particularly valued in high-transparency or thick-walled applications where color retention, mechanical integrity, and extended processing intervals are mandatory. Antioxidant 1135 often complements primary phenolic antioxidants, ensuring stability during pelletizing, film blowing, and injection molding stages of high-performance and specialty grade polyolefins.

    Industry compliance standards

    • FDA 21 CFR 177.1520 (food contact for polyolefins)
    • EN 13428: Suitability for mechanical recycling
    • ASTM D3350 for polyethylene compounds
    • China GB 4806.6 for food packaging materials

    Typical usage ratio

    • 0.05–0.2% of resin mass, with higher end of range used in thick or outdoor-exposed products

    Downstream process integration

    • Direct melt blending with resin chips during twin-screw extrusion; optionally pre-blended in concentrates or masterbatch for uniform dispersion before final compounding

    Final product types

    • Food contact films and rigid containers
    • Automotive bumpers and interior trim
    • Geomembranes and agricultural sheets
    • Piping and cable jacketing

    3. Synthetic Lubricant Production

    Producers of polyol ester (POE) and polyalkylene glycol (PAG) synthetic base oils employ Antioxidant 1135 as a key stabilizer against high-temperature oxidation during lubricant blending and compressor operation. Its solubility profile makes it suitable for both high- and low-viscosity fluids, enhancing the oxidative lifespan while minimizing sludge and varnish formation in demanding industrial and refrigeration compressor environments. The additive’s performance supports extended oil change intervals and protects sensitive system metallurgy.

    Industry compliance standards

    • DIN 51517: Lubricating oils specifications
    • ISO 6743 series for lubricants
    • ASHRAE Standard 86 for refrigeration lubricants
    • GB 11122 for synthetic lubricating oil

    Typical usage ratio

    • 0.05–0.15% by weight of finished oil; optimized per viscosity class and base stock chemistry

    Downstream process integration

    • Dosed into finished base stock during blending under inert atmosphere; thoroughly homogenized before additives and packaged as finished lube

    Final product types

    • Compressor lubricants for refrigeration and air conditioning
    • Gear oils for industrial applications
    • Hydraulic fluids for process equipment
    • High-speed spindle and vacuum pump oils

    4. Hot Melt Adhesives and Coatings

    Manufacturers of hot melt adhesives (HMAs) and specialty coatings use Antioxidant 1135 to maintain thermal stability throughout repeated heating and cooling cycles during application and service. Its non-volatility and high compatibility enable consistent color and viscosity profile in EVA- and APAO-based hot melts, electronic encapsulants, and pressure-sensitive adhesives. The additive also supports resistance to oxidative embrittlement in finished coatings exposed to elevated temperatures on metal, plastic, or textile substrates.

    Industry compliance standards

    • FDA 21 CFR 175.105 (hot melt adhesives for indirect food contact)
    • UL 94: Flammability requirements for adhesives in electronics
    • GB/T 2793 for hot melt adhesive test methods
    • EN 16790 for adhesives in hygiene products

    Typical usage ratio

    • 0.1–0.3% by weight of total adhesive or coating formulation, subject to processing temperature and resin type

    Downstream process integration

    • Blended directly into adhesive resin melt tanks at 120–180°C to ensure complete dissolution and dispersion prior to packaging or coating line feeding

    Final product types

    • Bookbinding and packaging adhesives
    • Nonwoven hygiene adhesives
    • Heat-sealable paper and film coatings
    • Electronics potting and conformal coatings

    5. Elastomer Compounding for Automotive and Industrial Parts

    Elastomer compounders utilize Antioxidant 1135 for high-performance EPDM, NBR, and thermoplastic elastomer blends, targeting resistance to thermo-oxidative degradation in engine components, weatherstrips, and technical rubber goods. Its rapid dispersion in rubber masterbatches provides reliable processability and shelf stability, ensuring physical properties—flexibility, hardness, color—meet automotive and heavy machinery requirements. The liquid format improves compatibility and avoids blooming in co-polymer/silicone-based elastomer systems.

    Industry compliance standards

    • SAE J200: Classification for rubber materials
    • ISO 9001: Quality management for automotive parts
    • RoHS Directive 2011/65/EU
    • GB/T 19244 for EPDM compounds

    Typical usage ratio

    • 0.15–0.3 parts per hundred rubber (phr), adjusted for compound exposure duration and temperature requirements

    Downstream process integration

    • Incorporated during initial mixing stage with plasticizers and other antidegradants before vulcanization and extrusion or molding

    Final product types

    • Automotive gaskets, hoses, and seals
    • Weatherstripping and door profiles
    • Industrial vibration dampers and belts
    • Flexible couplings and connectors

    6. Engineering Plastics for Electrical and Electronic Applications

    Producers of sophisticated engineering polymers, including polycarbonate, PBT, and polyamides, select Antioxidant 1135 to prevent color shift and molecular weight drop during high-shear molding cycles. It proves especially effective in plastic components subjected to elevated heat or electrical load, such as connectors, switches, and electrical housing. The raw material supports dimensional stability and dielectric integrity, essential for compliance with stringent safety and aging requirements in electronics manufacturing and assembly.

    Industry compliance standards

    • UL 746C: Polymeric material use in electrical equipment
    • IEC 60695: Fire hazard testing for plastics
    • RoHS Directive 2011/65/EU and EU REACH Annex XVII
    • China GB/T 20272 for electrical plastic parts

    Typical usage ratio

    • 0.08–0.18% of total formulation mass, with adjustments for resin base and component wall thickness

    Downstream process integration

    • Compounded together with resin pellets and other heat stabilizers in co-rotating twin-screw lines before pelletizing or direct molding

    Final product types

    • Electrical connectors and switch housings
    • Automotive relay covers
    • Consumer electronics enclosures
    • LED lamp bases and thermal management parts
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    Competitive Antioxidant 1135 prices that fit your budget—flexible terms and customized quotes for every order.

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    Certification & Compliance
    More Introduction

    Antioxidant 1135: Protecting Polymers With Every Batch

    Standing Behind What We Make

    Manufacturers face performance demands that keep raising the bar each year. Stronger, lighter, clearer, safer—these are more than marketing lines. They define what our customers expect from every pellet, granule, and coating layer that ships off our line. Our role making Antioxidant 1135 puts us at the intersection of polymer science and real-world reliability. This particular stabilizer isn’t just a chemical—it’s a commitment that each resin shipment reaches end-use without yellowing, brittleness, or early failure.

    What Sets Antioxidant 1135 Apart

    Experience in polymer stabilization tells us a simple truth: not all antioxidants perform equally. You can read broad descriptions about “phenolic antioxidants” every day, but the differences become obvious when you sit on the production line, balancing throughput against thermal stability and color safety. Antioxidant 1135 belongs to the family of hindered phenols, but its molecular structure reflects targeted engineering. Low volatility and excellent compatibility make it a staple for polyol and polyurethane processing. Most importantly, it resists extraction even during aggressive downstream processing.

    Our team reviews feedback from foamers, compounding plants, and automotive molders. The consistent message points to the way Antioxidant 1135 shields vulnerable polymers during both high-temperature conversion and long-term service. If you’ve seen discoloration or viscosity drift during repeated molding or curing, the root often traces back to inadequate stabilization. The chemical backbone of 1135 brings superior resistance to oxidation compared with classic phenols. We’ve run in-house trials and audited customer lines, noting extended lifespan in polyol systems, thermoplastic polyurethanes, hot-melt adhesives, and elastomer blends. This reflects real-world substrate compatibility—1135 mixes thoroughly, avoids haze, and stands up to repeated exposure without loss of protective function.

    Details That Matter More Than Labels

    Specifications, while important, sometimes miss the real reasons users prefer certain additives over others. Our technical team fights common industry challenges: volatility, bloom, and the never-ending battle against extraction during washing, heating, and chemical exposure. Antioxidant 1135 performs above average in long production runs where typical alternatives degrade or leach. The compound’s melting point and solubility mean it works in both liquid and solid formulations, allowing flexible dosing in polyols, flexible foams, and rigid PU systems.

    In our own plant, we have learned to respect the differences a single antioxidant brings—especially one with dependable performance through blending, hot melt processing, or even in thin film coatings. Its lower volatility preserves more of its stabilizing power through each heating cycle. For processors running high-temperature lines, this brings reassurance that stabilizer loss won’t drive up yellowing or processing scrap.

    Real Challenges, Real Solutions

    Polyurethane and polyol processors talk about yield, but the conversation always loops back to product stability over time. Early in our scaling process, we tested Antioxidant 1135 against commonly used phenolic alternatives and phosphite blends. With all other variables controlled—base resin, throughput speed, additive concentration—we noticed Antioxidant 1135 delivered brighter optical clarity and less post-processing haze. Analytical data matched what our eyes saw: lower carbonyl and chromophore levels in accelerated aging tests.

    Another place we see 1135’s strength: its migration resistance. Surfactants and solvents in foam and coating applications often encourage lesser antioxidants to leach out, especially after weathering or intermittent washing. Internal migration tests and field samples from our customers confirm retention levels with Antioxidant 1135 often outperform alternatives by a significant margin. End-users report less surface tack, less haze, and more consistent mechanical properties even after months outdoors or in high-humidity environments.

    Why It’s Not One-Size-Fits-All

    Producers ask about direct interchangeability—can you swap 1010, 1076, or other phenols with 1135? The answer lives in practical experience. Not every process benefits equally. Where 1135 excels, classic phenolics often fall short: foam stabilization, liquid polyol blends, and high-shear compounding. Our trials found that, due to lower volatility and stronger resistance to extraction, 1135 can push throughput higher while holding on to clarity and resisting oxidative degradation over repeated cycles. This can mean fewer production halts, increased output consistency, and a longer service life for the end product.

    We make Antioxidant 1135 for users looking to solve color drift, viscosity thickening, or material breakdown in polyols and flexible PU systems. From this vantage point, experience trumps brochure descriptions. Differences between hindered phenols appear subtle in the lab, but years on a production floor reveal them in ways data sheets can’t capture. Reliability, for us, means holding up under repeated thermal cycling and resisting migration—even after full chemical exposure during product aging.

    How End-Users Rely on Our Product

    Many industrial partners who depend on flexible or rigid polyurethane foams trace their improvements in product quality back to a consistent stabilizer regime. Users from automotive seat molders, in particular, mention smoother processing and less condensate discoloration in their finished goods. Home insulation makers point to lasting brightness and better shape retention over long storage. In the field, tested panels and molded parts incorporating Antioxidant 1135 often outperform comparable controls using commodity antioxidants. This feedback helps us continually refine our process and materials—directly answering the pain points of production, not just the paperwork.

    Our perspective comes from regular interaction with processing engineers on customer lines. Challenges shift from month to month—sometimes raw material variability, sometimes seasonal temperature changes in transit. Despite these fluctuations, shipments containing 1135 tend to record fewer complaints about yellowing or hardening in finished stocks. This outcome supports our focus on the small but cumulative differences that premium raw materials can make. We track every customer query, and our database points to fewer interventions down the road when Antioxidant 1135 forms the backbone of a stabilizer system.

    Performance You Can Measure

    Every technical recommendation we offer stems from comparison and validation. Our internal compounding lab maintains side-by-side runs for analysis by UV-visible spectrophotometry, tensile testing, and long-term oven aging. Antioxidant 1135 routinely maintains a whiter color and stronger mechanical properties under stress, especially in foam slabs and elastomer sheets pressed to high density. Melt processing tests in extrusion lines yield similar results: cuts in yellow index growth even at elevated processing temperatures.

    Users in hot-melt adhesives benefit from the lower color buildup during open time and storage. Artifacts like streaking, blooming, and chalking that sometimes appear with older generations of hindered phenolics rarely trouble lines running with 1135. These practical benchmarks come from batch records, not just lab notebooks. We encourage partners to run split-lot comparisons—many return with quantifiable reductions in off-grade output and less scrapped material during aggressive post-mixing or secondary processing.

    Our Commitment: Batch to Batch, Year after Year

    Consistency matters most to processors handling high volumes or demanding quality certification. In our own plants, refining the production of Antioxidant 1135 means revisiting every process from raw material inputs to final granulation. We invest in strict process controls to minimize batch variation. Years of operation show that holding tight on process chemistry translates into a familiar, repeatable product result for every user. Production teams rely on stable dispersibility, controlled particle size, and dependable melting point in each shipment they receive.

    We’ve supported partners through scale-up, troubleshooting, and new application launches. These partnerships often reveal the unglamorous, day-to-day hurdles: clogged filters, feeder inconsistencies, or color shifts after several thermal cycles. Companies who have switched to Antioxidant 1135 typically report smoother compounding—fewer clogs and uniform color. In multiple extrusion and compounding trials, labor savings and material efficiency offset premium additive costs, delivering more reliable finished goods. Over several years, failure rates for discoloration or physical breakdown dropped measurably on documented lines using Antioxidant 1135.

    Our Approach: Technical Dialogue Grounded in Production Experience

    Our chemists and engineers walk the line between cutting-edge stabilization chemistry and everyday plant realities. We test each new lot, because we know the cost of a failed shipment isn’t just a bad batch but reputation damage—and lost margins—across the whole customer base. We keep lines open to plant managers and shift supervisors, gathering field insights. Most improvements in Antioxidant 1135’s production and support have grown from this direct base of experience. The result is a stabilizer tuned for the wide range of polyol and polyurethane applications, not just lab recipes.

    Our R&D group doesn’t chase abstract “market needs.” Instead, we sit with the problems shared by customers—heat streaks after compounding, consistency losses from extended storage, haze or poor flow. One North American foam producer shared a classic case: ongoing trouble with post-mold discoloration traced back to previous stabilizer migration. Moving to Antioxidant 1135 calmed those issues, confirmed by instrumental and visual inspection over a full shift cycle. This kind of support—fact-based, responsive, ongoing—is the foundation of our involvement in polymer stabilization.

    Supporting Data, Not Just Claims

    We document every claim with ongoing data from in-house and third-party analytics. Processing temperatures for Antioxidant 1135 regularly stay within target limits during high-shear mixing. Color indices in elastomer sheets and finished foams retain clarity and crispness after oven exposure. Migration levels in solvent rub-out tests impress even our most demanding partners, keeping tack and surface haze under tight control over time. We know which blends favor 1135, and we don’t hesitate to steer customers to different options when the need arises. Our technical support hotline handles these cases daily, drawing from live production results and reputable field data.

    The nuance here comes not from technical data sheets, but from persistent attention to feedback. For example, we maintain sample repositories—side-by-side slabs, rolls, and compounded granular materials—reserved for customer reviews and quality checkbacks. This enables each partner to check the long-term performance of Antioxidant 1135 against their own historical controls. Extended outdoor exposure, repeated wet-dry cycling, and variable storage show the stabilizer’s value over time. Operators who adopt it consistently report fewer out-of-spec lots and less downtime devoted to off-spec rework.

    Facing the Future of Polymer Stabilization

    Markets evolve, and so do performance pressures. Expectations for recycled content, indoor air quality, and eco-labeling continue to change the way we formulate and sell stabilizers. Our development efforts now scrutinize every variable: residual monomers, VOC levels, and post-use recyclability. Antioxidant 1135 continues to earn its place because it reduces polymer degradation by capturing radicals without contributing to volatile contamination. Compliance with stringent downstream requirements keeps our product relevant—even as customers push toward greener, safer, and longer-lived polymers.

    Applications in emerging sectors also test the stabilizer’s limits. We’ve supplied batches for use in plant-based PU systems, bioplastic blends, and high-clarity automotive trims. No additive works everywhere, but the feedback we receive—paired with our own process controls—shows 1135 upholds the standard even under unfamiliar stressors. We share these findings with our partners so they can make the best choice for their unique process, balancing environmental goals against toughness and processability.

    Lessons Learned and Shared

    Years of manufacturing antioxidants teach that the small details—handling, storage, compatibility—often shape a user’s real satisfaction far more than flashy initial specs. Our team trains on early detection of off-odor events, shock sensitivity, or unexpected interactions with other stabilizers. Because Antioxidant 1135 holds to modest, controllable reaction endpoints, it seldom surprises compounding teams with issues that derail batches downstream. Long storage or rough transit rarely compromises quality, so supply chains stay predictable. This trust builds not with marketing promises, but with hard-won batch stability experienced by operators over time.

    We view every customer trial not as another sale but as a test of our understanding and our commitment. If an operator flags drying performance or an unusual haze, we replicate the line settings, run full tech support, and often return with better dosing advice or even alternative product suggestions. Building a culture of reliability comes as much from solving the last 2% of line issues as from touting headline strengths.

    The Difference: Our Partnership Approach

    Manufacturing at scale brings responsibility. The best chemical is one that makes a plant operator’s day smoother—not just through resistance to oxidation or extraction, but by reducing process interruptions, scrap rates, and downstream headaches. Antioxidant 1135 wins loyal users because its performance is based on what matters on real lines: clear processing, lasting color, less downtime, and fewer material failures down the chain.

    We know every customer tastes performance in a slightly different way—a shift in color, a bump in throughput, a reduction in foam defects. The numbers we report come from those shifts, measured batch after batch, trial after trial, on multiple continents and processing lines. Our ongoing investment in both manufacturing quality and responsive technical support underpins every shipment of Antioxidant 1135. It’s this real-world perspective—not just lab metrics or advertising—that gives our product its reputation, and it’s why we keep our doors open to every partner, every process challenge, and every field test.

    From Us to You: Why Antioxidant 1135 Matters

    Manufacturers want confidence their additives will work not just in theory, but under the messiness of production. Antioxidant 1135 answers a critical need for stability and reliability, not through clever branding but through day-after-day, run-after-run results on lines where mistakes and off-spec lots cost real money and reputation. We share what we see, test what we recommend, and stand behind every drum, pail, and shipment leaving our plant. Because in real manufacturing, performance can’t be faked—it shows up in fewer complaints, higher yields, and partnerships that grow stronger each year.