|
HS Code |
889180 |
| Product Name | Sinopec SIS YH-1209 |
| Chemical Type | Styrene Isoprene Styrene (SIS) Block Copolymer |
| Appearance | Pale yellow, translucent solid |
| Molecular Weight | Approximately 110,000 g/mol |
| Styrene Content | 15% - 18% |
| Form | Pellets or granular |
| Softening Point | 91 - 99°C |
| Ash Content | ≤ 0.1% |
| Volatility | ≤ 0.7% |
| Solution Viscosity | 1200 - 1700 mPa·s (at 25°C, 25% in toluene) |
| Tensile Strength | ≥ 10 MPa |
| Density | 0.92 g/cm³ |
| Color | ≤ 70 (Gardner scale) |
| Application Area | Hot melt adhesives, pressure sensitive adhesives |
| Storage Temperature | Below 40°C |
As an accredited Sinopec SIS YH-1209 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Sinopec SIS YH-1209 is typically packaged in 25 kg white polyethylene (PE) bags, featuring product labeling and manufacturer’s details. |
| Container Loading (20′ FCL) | 20′ FCL can load 12,000 kg of Sinopec SIS YH-1209, packed in 25 kg bags on pallets for safe transport. |
| Shipping | Sinopec SIS YH-1209 is typically shipped in 25 kg paper bags with inner plastic liners to protect against moisture. Bulk shipments may be available in jumbo bags. The chemical should be stored and transported in a cool, dry place, away from direct sunlight and incompatible materials to ensure product quality and safety. |
| Storage | Sinopec SIS YH-1209 should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and sources of ignition. Keep the product in its original, tightly sealed packaging to prevent contamination and moisture absorption. Avoid excessive heat and strong oxidizing agents. Ensure appropriate labeling and store separately from incompatible materials to maintain product quality and safety. |
| Shelf Life | Sinopec SIS YH-1209 has a shelf life of 12 months when stored in a cool, dry, and well-ventilated area. |
Competitive Sinopec SIS YH-1209 prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615651039172 or mail to sales9@ascent-chem.com.
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Tel: +8615651039172
Email: sales9@ascent-chem.com
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Feedback from customers in adhesives, plastics, and rubber goods never leaves our production lines. We constantly look at raw material trends and processing demands as we shape new options in the styrene-isoprene-styrene (SIS) segment. Sinopec SIS YH-1209 has grown directly from decades of pilot plant adjustments and constant feedback from global and local clients. Every batch mirrors a tradition of reliability, and we keep hearing that ease of operation and consistency win out over flashier features claimed by other options. In markets where brand loyalty helps people save on downtime, this model has built up trust from the ground up.
SIS YH-1209 stands out in the copolymer blend space by matching high purity with stable performance. Process engineers tell us that choice of modifier in pressure-sensitive adhesives hinges on melt viscosity and compatibility with tackifiers. Here, our SIS YH-1209 hits a sweet spot— softer than general-purpose SBS, it offers higher flexibility and elasticity, making it a go-to for hot-melt adhesives. Melt flow properties and solution clarity are set by years of formula fine-tuning, and our in-house teams monitor each batch to verify the microstructure phase separation, resulting in strong, reliable tack combined with resilience.
We design this model to work well in self-adhesive labels, tapes, sanitary products, and packaging, because our partners ask for lasting bond strength that won’t yellow or lose grip under sunlight, heat, or pressure. What we see over time is that YH-1209 resists breakdown, endures cyclic stress, and holds up during transport— whether adhesives are applied in thin or thick coats. When clients shifted to SIS YH-1209, their scrap rates dropped and line speeds increased, mainly from less downtime caused by melt gelling or bleeding. Workers on the floor notice easy processing and reduced equipment fouling, since the polymer runs cleaner than alternatives with random melt distributions.
Quality labs complain that copolymer mixes frequently introduce noise in analytical results, resulting in frustrating corrections in batch formulations. For this product, we keep the molecular weight tightly aligned, using continuous solution polymerization. The polystyrene content in YH-1209 is carefully controlled to produce the optimal ratio of hardness and flow. Long-term partners in the label industry have reduced reformulation cycles, thanks to this narrow molecular design. Melt index holds steady, and color remains low, so you get predictable results coming out of every box.
Moisture management in our production process helps avoid unwanted hydrolysis or oxidative degradation, so adhesives stick tightly longer on a range of surfaces, from paper and films to skin-contact products. We built our reactor system to handle scale-up without loss of quality, as seen in larger-scale orders from hygiene sector clients. This gives factories confidence to run extended campaigns using the same SKU, minimizing the risk of unexpected complaints or recall issues.
SIS YH-1209 turns into something greater when it reaches our clients’ workshops. In tapes and labels, the material processes at a broad range of temperatures, keeping hot-melt operating windows wide and uninterrupted. When equipment shifts between grades, this copolymer flows out fully, reducing contamination and saving wash-up time. Film converters report reliable die-cutting performance and stable bonding, even at high coating speeds—a key reason for the sustained orders from packaging specialists. Masking tape producers notice strong initial tack and worry less about edge lift during storage and transport.
This copolymer adapts to solvent-based, water-based, and hot-melt production methods, letting businesses fit it into their own technology without rebuilding entire lines. Especially in disposable hygiene applications, manufacturers value hypoallergenic performance, limited odor, and low extractables. SIS YH-1209 meets those needs, and we have repeatedly sent out technical teams to validate performance in finished goods as new regulatory tests and standards roll out globally.
Direct feedback shapes our products every season. In the last few years, many customers switched from lower-cost triblock and radial SIS products due to repeated stability and clarity issues. What sets SIS YH-1209 apart is its very low gel content— an achievement that translates into fewer downtime hours and lowered filter blockages for users running fine nozzles or micro-patterned adhesive spreads. Compared to earlier Chinese SIS models or imports based on lower purity streams, our process yields a transparent, light-colored pellet that remains stable under common warehouse conditions, cutting spoilage and mess.
Big-name adhesive makers, including those focused on environmental certification, have moved towards YH-1209 after finding less yellowing under UV and a sharper cut-off in the FTIR spectrum, signaling minimal oxidation and unwanted cross-linking. Field results show less edge curl in laminated packaging and higher conversion rates per kilogram of resin, especially in high-run printing operations. We tracked annual comparisons for leading tape converters, who reported fewer rework claims from downstream customers, an edge in global supply contests where performance data drives procurement.
Our own production managers see constant value in keeping the SIS formulation process aligned with users’ line needs. We added granular size controls in the pelletizer phase so that the product mixes and melts evenly, which is extremely important for high-speed extrusion or slot die systems. Technicians appreciate the faster melt-down at start-up, which means less material is lost during grade changing, and heat history stays limited, helping to prevent early breakdown. Shipping managers, who monitor bulk orders for long-haul export, point out reduced clumping, a result of the careful dusting system we introduced after consultation with our main clients overseas.
Customer returns for YH-1209 have dropped steadily as clients learn that the blend resists aging. This means adhesives made from the polymer have longer shelf-life, lower migration, and better resistance to yellowing than earlier grades. In our internal applications lab, side-by-side application cycles confirm that the SIS YH-1209 delivers more hours of flexibility on stretch testing rigs than classic SIS materials, giving end products greater staying power where it counts.
Today’s adhesives markets see new challenges from environmental controls, migration testing, and increased consumer scrutiny. We anticipate these shifts early by logging compliance details on each production run and adjusting monomer feeds ahead of rolling requirements. Brands exporting finished tapes or foams require resin sources to conform to updated directives on pure raw material sourcing. SIS YH-1209’s clarity and low migration potential have helped downstream customers clear regulatory audits in major global regions.
Part of our experience as chemical manufacturers rests in keeping channels open with certification bodies and unionized factory buyers. Safety teams across packaging, diapers, or medical tapes want their polymer blends certified for exposure, especially if materials contact skin or food. YH-1209 keeps volatile residuals to trace levels and consistently meets ROHS, REACH, and major standards, reducing effort for regulatory submissions. We invest in ongoing R&D support, which means as new test protocols arrive, data packages for this model update quickly to support client filings.
A polymer’s properties trace back to the choice of monomer, catalyst, and line design. Within our plant, the feedstock allocation relies on supply chain data—rejecting inconsistent refinery fractions and sticking to fixed-proven blends. Before launching this grade, we ran pilot trials testing oxidation, block distribution, and gel particle counts at production scale, not just in lab glassware. Technical partners, especially those in tape and hygiene adhesive manufacture, commented on how these small changes saved them machine cleaning costs and allowed longer line runs per batch.
By watching how resin handles in situ, not just on a spec sheet, we increase real-world utility and back up performance claims with customer field data. In the last product cycle, the formulation team improved the tackifier compatibility after line workers pointed out issues switching between batch blends during continuous operation. This shifted our whole pelletization method, producing a cleaner finish with faster melt-in.
Managing bulk polymer volumes introduces real challenges. We watch climate control, packaging design, and container security every step of the way, responding to feedback from global packers and distributors. Storage losses from heat or moisture led us to invest in improved packaging, which now guards the transparency and integrity of the pellets during transit, whether bags move across continents or between city warehouses. This effort means customers at every scale access “factory-fresh” stock, reducing variability in line testing and adhesive mixing.
Many of our industrial users shifted to SIS YH-1209 as a primary grade for key contracts that cannot tolerate returns or contamination disputes. The upgraded packaging, combined with a more robust shipping process, has contributed to tighter inventory control and simpler storage for both large and small end-users. Year-on-year, this product sees more renewals from clients as they align their own quality assurance programs to the consistency offered in each drum or bag.
Our role in the SIS sector remains tightly linked to pipeline innovations in both raw material sourcing and process enhancement. A significant share of the company’s capital investment goes into pilot reactors and online monitoring systems, rather than legacy batch reviews. We log and analyze every hiccup and every high-run success – especially as YH-1209 often gets used in new or demanding applications. For instance, as multilayer packaging and specialty construction tapes grow in popularity, we partner early with manufacturers to tune the resin’s melt, flow, and curing characteristics to fit future needs.
Feedback-driven improvements have made SIS YH-1209 increasingly attractive for challenging projects where adhesive strength, flexibility, and long-term durability cannot be left to chance. By focusing on fine-tuning properties like color stability after extended exposure, low emissions, and minimized odor, our teams create a dependable base for customers’ innovations, whether in smart labeling, lightweight packaging, or high-performance engineering.
Practical results tell the truest story. Over the years, users running 24-hour coaters describe how SIS YH-1209 maintains melting speed and blend homogeneity, even as ambient conditions shift. Production managers have reported downstream performance gains, not just in the raw numbers—such as peel strength, thermal resistance, and shelf life—but also less visible yet equally valued areas: fewer operator adjustments, fewer mid-shift rejects, and smoother transitions from testing lot to scaling up commercial runs.
Supporting these outcomes, our process and applications support team visits customer plants for start-up guidance and troubleshooting—real-world moments when a batch or a line “hangs up” or fails to meet a new market spec. Team feedback consistently leads to process tweaks and improved production stability, and this open feedback channel has made SIS YH-1209 a reference standard for practical performance.
We work amid constant changes in market demand, regulation, competition, and raw material pricing. Having a product that withstands these shifts with fewer supply headaches means production teams can focus energy where it matters—delivering value rather than managing endless troubleshooting. SIS YH-1209 shows its staying power in this landscape, not by making outsized promises, but by working reliably over thousands of production hours, shipment cycles, and end-user applications.
Large or small, our customers want resins that make their products safer, easier to process, and more appealing on shelf or at end use. We know this, and we test every run with these real-world tests. Decades of in-house experience, data-driven adjustment, and listening to our partners’ needs let us keep developing not just SIS YH-1209, but a next generation of SIS materials. This product reflects genuine evolution, and earns its place daily on production lines worldwide.
