|
HS Code |
268802 |
| Product Name | Styrene-Isoprene-Styrene Block Copolymer (SIS YH-1105) |
| Appearance | Transparent, light yellow thermoplastic elastomer |
| Styrene Content | 15% |
| Specific Gravity | 0.93 g/cm³ |
| Melt Flow Index | 10 g/10min (200°C/5kg) |
| Ash Content | ≤0.2% |
| Volatility | ≤0.7% |
| Tensile Strength | ≥6.0 MPa |
| Elongation At Break | ≥700% |
| Shore A Hardness | 40-50 |
| Solution Viscosity | 800-1400 mPa.s (25°C, 25% in toluene) |
| Color Gardner | ≤4 |
| Block Structure | Linear |
| Main Applications | Hot melt adhesives, pressure-sensitive adhesives, coatings |
As an accredited Styrene-Isoprene-Styrene Block Copolymer (SIS YH-1105) factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The SIS YH-1105 is packaged in 25 kg net weight paper bags with inner plastic liners for moisture protection and easy handling. |
| Container Loading (20′ FCL) | Styrene-Isoprene-Styrene Block Copolymer (SIS YH-1105) packed in 20′ FCL: 17MT, 25kg/bag, stretch-wrapped palletized. |
| Shipping | Styrene-Isoprene-Styrene Block Copolymer (SIS YH-1105) is typically shipped in 25 kg kraft paper bags or polyethylene-lined paper sacks. The product should be stored and transported in a cool, dry, and well-ventilated area, away from direct sunlight, heat sources, and moisture to maintain its quality and stability. |
| Storage | **Styrene-Isoprene-Styrene Block Copolymer (SIS YH-1105)** should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and sources of heat or ignition. Keep in tightly closed containers to prevent contamination and moisture absorption. Avoid strong oxidizing agents. Storage temperature should ideally be below 30°C. Ensure proper labeling and follow local regulations for chemical storage. |
| Shelf Life | SIS YH-1105 has a shelf life of 2 years if stored in a cool, dry, and well-ventilated area. |
Applications of Styrene-Isoprene-Styrene Block Copolymer (SIS YH-1105) in Industrial ManufacturingAs a direct manufacturer, we supply SIS YH-1105 to a range of industrial sectors where its thermoplastic elastomer properties enable reliable performance in specific downstream production fields. SIS YH-1105 is valued for its adhesive capabilities, elastic modulus, and well-controlled physical characteristics. Below, we outline detailed applications within actual industrial end-use tracks, focused on technical formulation, regulatory adherence, and integration into various manufacturing flows. 1. Pressure Sensitive Adhesives for Labelstock and TapesSIS YH-1105 acts as a key base polymer in solvent-based, hot-melt, and water-based formulas for pressure sensitive adhesives (PSA) required in label and tape manufacturing. Its excellent tack retention and moderate cohesive strength make it particularly suited for production lines needing consistent application in both high-speed coating processes and variable substrate conditions. Manufacturers select formulation ratios based on converting speed, adhesion targets, and end-use substrate requirements, while also considering environmental and consumer product safety regulations. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
2. Hygiene and Disposable Product Adhesive ApplicationsSIS YH-1105 finds extensive use as a primary elastomeric component in the hot-melt adhesive formulations for hygiene disposables. Its reliable softness, low odor, and compatibility with paraffin wax and hydrogenated hydrocarbon resins ensure adhesion performance required in diapers, adult incontinence, and sanitary napkin production. Compliance with sanitary and food-contact standards is critical for contact and non-contact skin applications within the hygiene supply chain. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
3. Flexible Packaging & Lamination AdhesivesFlexible packaging lines use SIS YH-1105 as a critical ingredient in multi-layer film adhesive systems. Its capacity to retain elasticity and adhesion on polyolefin and polyester films enables converters to meet demanding requirements for food, confectionery, and agricultural packaging. The polymer profile supports performance in both continuous and batch lamination operations, catering to varying thermal load and solvent retention constraints while maintaining compliance for indirect food contact. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
4. Bitumen Modification for Roofing and Waterproofing MembranesIn the construction chemicals sector, SIS YH-1105 modifies bituminous compounds to impart flexibility, cold flow, and improved adhesion in roofing felt, underlay, and membrane manufacturing. Its molecular architecture stabilizes bitumen blends over a wide thermal range, providing enhanced cracking resistance and extending service life in harsh climates. Quality assurance programs require routine blend testing for polymer retention and low-temperature behavior. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
5. Hot-Melt Bookbinding Adhesives for Print FinishingPrint finishing operations in commercial and book publishing sectors utilize SIS-based polymer blends for hot-melt bookbinding adhesive systems. SIS YH-1105 enables high-speed production by delivering strong page pull-resistance and maintaining lay-flat properties during gluing, especially in perfect binding and side-glue operations. Formulation requires exact control of open time, set speed, and substrate compatibility to ensure optimal binding strength with a range of paper stocks. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
6. Shoe Sole and Footwear Bonding AdhesivesSIS YH-1105 supports the formulation of adhesives for footwear assembly, primarily in processes bonding synthetic soles, insoles, and upper components. The material’s elasticity and processing properties allow for flexible bonds compatible with PVC, PU, and TPR substrates. Factories must maintain control over open time and bond strength under dynamic bending and accelerated aging tests to meet international safety and durability specifications. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
|
Competitive Styrene-Isoprene-Styrene Block Copolymer (SIS YH-1105) prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8618136850665 or mail to sales4@ascent-chem.com.
We will respond to you as soon as possible.
Tel: +8618136850665
Email: sales4@ascent-chem.com
Flexible payment, competitive price, premium service - Inquire now!
Over years of producing Styrene-Isoprene-Styrene block copolymer, we’ve seen many models evolve along with the markets they serve. SIS YH-1105 stands out in our operations because it reflects a balance between adhesive performance and consistent processability. Developing this grade required harnessing our control over polymerization conditions, tuning the microstructure to achieve a copolymer that meets the needs of high-tack applications without compromising physical integrity.
We’ve watched demand climb in sectors like pressure sensitive adhesives, hot-melt formulations for hygiene products, tapes, labels, and bookbinding. These industries don’t accept just any elastomer; they need repeatable quality, high purity, and strong tack behavior, particularly at room temperature. The YH-1105 model came out of ongoing collaboration with adhesive manufacturers. As lines ran faster, customers needed a copolymer with tight molecular weight distribution and a dependable styrene content that doesn’t vary from batch to batch.
Our SIS polymers take shape through living anionic polymerization. We use purified isoprene and styrene monomers, monitoring their addition with real-time controls. This setup lets us engineer hard styrene end-blocks and soft rubbery isoprene mid-blocks. YH-1105 targets a styrene content tuned for the balance between cohesive strength and tackiness, so formulations show peel strength without getting overly soft at higher temperatures.
Compared to other block copolymers, SIS offers a unique elasticity because isoprene brings the right degree of flexibility. The A-B-A structure improves not only elasticity but also thermal stability. Some customers reach for SEBS or SBS. Those materials excel when oil resistance or elevated temperature performance is critical. SIS YH-1105 holds its own by providing excellent clarity, processability, and adhesion to a broad spectrum of surfaces, especially where disposable hygiene, medical tapes, or packaging labels require clean and immediate tack.
Every batch of SIS YH-1105 exits our reactors following filtration and vacuum stripping. We use stainless steel transfer lines, limiting the introduction of metallic ions or oxidized contaminants. We designed the grade to meet high color and thermal stability standards, which means the final appearance matters where clarity is crucial, such as in medical or transparent labels.
YH-1105 granules retain shape and flow through feeders without bridging or sticking, so extrusion and mixing lines rarely stop for cleaning. That may sound simple, but from a plant manager’s perspective, line stoppages are the enemy of both yield and quality assurance. Packaging lines appreciate the low gel content, reducing filter load and minimizing downtime. This reliability comes from plant upgrades focusing on temperature uniformity and batch documentation, rather than accident or luck.
YH-1105 finds its real test in hot-melt pressure sensitive adhesives. Customers who make diaper construction or medical tape backings look for melt flow rates that allow continuous coating without splattering or cold spots. Tack and shear properties depend on both the SIS quality and the mixing of plasticizers, tackifiers, and resins. Over the years, application engineers have confirmed YH-1105 pairs well with both aliphatic and aromatic hydrocarbon resins, providing flexibility for manufacturers fine-tuning their recipes.
Our operators check that the polymer handles repeat compounding without crosslinking or thermal degradation. This is key for packaging or labels, where adhesives sit exposed to heat, UV, and the stresses of high-speed die-cutting. SIS YH-1105 resists yellowing and retains its tack after both short and long dwell times. These properties cut down on customer complaints and reduce the need for off-spec waste disposal.
As global demand shifts, not all SIS grades stay in favor. Some models achieve higher elongation or softer feel; others hold more styrene and show increased modulus. In direct comparisons, customers find YH-1105 retains more consistent peel and holding strength over temperature swings common in logistics or shelf displays. Our chemists can trace this result to the polymer’s block length, sequence distribution, and the careful selection of antioxidant stabilization during packaging.
Cheaper alternatives may tempt with lower prices, but these often come from irregular copolymerization, inconsistent block lengths, or chemical residues from less stringent processes. That’s not always apparent on a datasheet, but in the mixing tank, bad SIS brings haze, lumps, and pump clogging. Long after purchase, those headaches eat away potential savings. Reputable converters stay with YH-1105 for that steady viscosity and low odor, which makes a big difference for both operators and end users, especially where medical or food contact is involved.
Our technical support teams visit adhesive workshops, running joint trials or troubleshooting issues ranging from clarity to cold flow. Many smaller tape converters operate older lines, less able to cope with block copolymers that show excessive gelling or require aggressive filtration. YH-1105’s regular macromolecular architecture helps these customers push production rates without investing in expensive upgrades. Large multinational hygiene producers, in contrast, insist on batch traceback for compliance and regulatory audits. The documentation and repeat analysis we keep on YH-1105 batches allow these customers to pass audits and avoid costly product recalls.
A few application cases really drove home the importance of odor control for our grades. Some export markets impose strict odor thresholds for materials used in personal care and medical settings. Even low-level volatiles can trigger rejections. On multiple occasions, our polymer chemists tweaked antioxidant packages and fine-tuned vacuum drying times to reduce residual odors, increasing acceptability for these sensitive markets. For disposable hygiene manufacturers chasing higher line speeds, they’ve pointed out that steady viscosity and non-clumping flow help them avoid reservoir or hopper build-up—saving on both labor and lost raw material.
Through regular plant audits, we found that more partners want transparency around what goes into their adhesives. For YH-1105, the manufacturing controls, absence of harmful metals, and the compliance documentation (such as food and medical contact certifications) are becoming non-negotiable. Regulatory teams examine additive choices and polymer profiles to make sure nothing from the SIS migrates above allowed thresholds. Working directly with OEMs, we’ve adapted our blend packages, using globally recognized antioxidants, eliminating problematic substances that flagged regulatory or customer concern.
Customers facing sustainability pressures ask about recycling and disposal as well. While SIS cannot be called biodegradable, its thermoplastic nature allows recovery and reprocessing of production scrap. We’ve supported local partners in pelletizing and reusing offcuts, reducing landfill demand where possible. This approach extends not only to YH-1105, but to other plant grades. Feedback from environmental audits has led us to reduce dust and emissions during processing, ensuring that each batch leaves a smaller footprint on the plant surroundings.
Our experience shows that reliable SIS performance does not come from a one-time certification or batch approval. Quality in YH-1105 comes from recipe control, equipment cleanliness, staff vigilance, and continuous small adjustments, not just large capital investments. On busy days, we’ve tracked every temperature drift, mixer flag, and raw material anomaly, recognizing that even minor process fluctuations may seed downstream defects. Lessons from our lab tell us that using only stabilized isoprene, minimizing air exposure, and controlling moisture at every stage, all reduce the odds of gel formation or off-odor issues later.
Vertical integration grants us oversight on every element, from purification to packaging. Our own logistics team reports less confusion loading standardized YH-1105 bags, while customer audits focus on the traceability and packaging hygiene. This isn’t just a paperwork exercise; it’s how repeat customers sleep easy knowing the adhesive or label they made today will perform up to spec six months from now.
No material stays favorite forever; customers constantly press for variants with higher green strength, lower volatility, or less environmental impact. Our in-house researchers partner with downstream engineers, running pilot-scale extrusions or compounding tests to ensure SIS YH-1105 stays tuned to actual process realities—not just theoretical possibilities. For specific tape or hygiene markets, they sometimes request tighter color or volatility specs. Through minor reformulations or updated purification processes, we have managed to deliver SIS with even less color formation and lower extractables.
Shifts in global sourcing brought new raw material supply risks. We now keep tighter supplier qualification and backup inventories for monomers and antioxidants, protecting YH-1105 consistency despite price and supply shocks. That means adhesive firms do not have to stall or reformulate in a panic during market shortages. Years of close collaboration helped us forecast needs, and we regularly incorporate customer feedback into our planning cycles, ensuring SIS YH-1105 aligns with evolving market requirements.
Every polymer batch starts with attention to personal and process safety. Our staff trains on the hazards tied to volatile monomers and high-pressure systems, and our SIS lines feature real-time monitoring to catch hot spots or leaks before they reach unsafe levels. By adopting closed handling systems and in-line filtration, we keep not only the product but also the work environment safe and clean. Our experience with SIS YH-1105 confirms that stable process conditions lead to both fewer human errors and a safer plant for all operators.
Sustainability audits increasingly scrutinize the total plant impact. Through investments in energy recovery, reduced purge gas consumption, and water recirculation, we demonstrated that high-quality SIS production need not trade off with reduced environmental stewardship. The cumulative lesson remains that running a cost-effective, safe, and regulatory-compliant SIS YH-1105 operation requires active participation from every department—production, maintenance, lab, shipping, and quality control.
Manufacturing is built on trust. Polymeric adhesives and coatings must deliver reliability long after leaving our plant. Over years of producing SIS YH-1105, we’ve stayed close to both process data and field performance. Our teams listen carefully not only to production supervisors but also to end-user complaints and operator insights. No process is perfect, but keeping close tabs on quality metrics and customer application reports lets us respond quickly and adapt the grade as new needs emerge. That two-way flow of information shapes every new batch we pull from the reactors.
In our daily practice, the best sign of a job done right comes from seeing YH-1105 running trouble-free on customer lines, filling a role in pressure sensitive adhesives, tapes, labels, and personal care articles that demand consistency and safety. That’s not marketing spin—it’s the result of disciplined attention to process, openness with customers, rapid troubleshooting, and respect for the realities at both ends of the manufacturing chain.
Through decades of fieldwork and constant improvement, we’ve shaped SIS YH-1105 to meet demanding expectations and tough challenges from those who understand what matters on the factory floor and in the finished product. This feedback loop continues to push both the product—and our operation—forward.
