|
HS Code |
388111 |
| Product Name | 4,4'-Sulfonylbis[2-(Prop-2-En-1-Yl)Phenol] |
| Molecular Formula | C21H20O4S |
| Molecular Weight | 368.45 g/mol |
| Cas Number | 130429-06-0 |
| Appearance | White to off-white solid |
| Melting Point | 108-113°C |
| Solubility | Insoluble in water; soluble in organic solvents |
| Purity | Typically ≥98% |
| Structure Type | Aromatic sulfone with two allylphenol groups |
| Storage Conditions | Store at room temperature, keep container tightly closed |
| Synonyms | BAPS, Bis(allylphenol)sulfone |
| Hazard Statements | May cause eye, skin, and respiratory irritation |
As an accredited 4,4'-Sulfonylbis[2-(Prop-2-En-1-Yl)Phenol] factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Amber glass bottle containing 100 grams of 4,4'-Sulfonylbis[2-(prop-2-en-1-yl)phenol], tightly sealed with a screw cap. |
| Shipping | Shipping of 4,4'-Sulfonylbis[2-(Prop-2-En-1-Yl)Phenol] requires secure, sealed containers, protected from moisture and extreme temperatures. Label as a chemical substance per relevant transport regulations. Handle with care to avoid breakage or leakage. Use secondary containment and documentation in compliance with local, national, and international shipping regulations for chemical materials. |
| Storage | Store **4,4'-Sulfonylbis[2-(Prop-2-en-1-yl)phenol]** in a tightly sealed container, in a cool, dry, and well-ventilated area away from sources of ignition, heat, and moisture. Protect from direct sunlight and incompatible materials such as strong oxidizers and acids. Ensure proper labeling and access control. Use spark-proof tools and avoid dust formation during handling and storage. |
Competitive 4,4'-Sulfonylbis[2-(Prop-2-En-1-Yl)Phenol] prices that fit your budget—flexible terms and customized quotes for every order.
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We know that the demands on specialty monomers grow sharper every year, especially as next-generation plastics and coatings step out from the lab and into commercial production. Our direct experience in manufacturing 4,4'-Sulfonylbis[2-(Prop-2-en-1-yl)phenol], known to many as BAPS or Bisallyl Bisphenol S, reflects a focus on purity, reliability, and long-run consistency that comes from thousands of kilograms of annual output going to plants that simply do not tolerate surprises.
Four, four prime sulfonylbis[2-(prop-2-en-1-yl)phenol] grew out of decades of investigation into heat-resistant, chemically robust thermoset resins. Structurally, this molecule sports two allyl-modified phenol units bridged by a sulfone group, offering a balance of reactivity, thermal stability, and performance that standard bisphenols rarely match. We manufacture it to a specification that ensures narrow molecular weight distribution and maintains a controlled content of residual impurities. This discipline means polymer chemists can rely on batch-to-batch performance, with less process drift during curing and post-cure cycles. In our hands, the typical assay for BAPS falls reliably above 98% purity, confirmed through regular HPLC, GC-MS, and NMR checks right off the production line.
Chemists weighing options between epoxy and allyl-containing cure systems quickly notice that many competitors' bisallyl bisphenol products come riddled with micro-impurities—leftover solvents, oxidized byproducts, even odd chains from sloppy reactions. Over time, we've tuned both the synthesis and finishing steps to strip these impurities away before the product even enters purification, much less final drying and packaging. We produce BAPS in kilogram to multi-ton lots in glass-lined reactors where temperature, addition speed, and pressure receive hands-on attention from shift chemists who have turned the process into a craft.
Other manufacturers may lean on column crystallization, which can leave subtle inclusions that mess with long-term storage and application. We switched years ago to a combination of reduced-pressure distillation and proprietary liquid-liquid extraction, which leaves practically no measurable traces of residual solvents or oligomers, even in product sitting on the shelf for more than a year. This sets up our BAPS as a preferred material in specialty composites and coatings, especially where downstream cure yields, mechanical properties, and bulk electrical insulation must hit narrow operating windows.
Every kilogram produced in our line ends up in hands crafting high-reliability resins, structural adhesives, printing plates, and electrical laminate substrates. You see this monomer shine in advanced phenolic and bismaleimide-allyl composite matrices, where traditional bisphenol A or F structures usually falter under prolonged heat, UV, or acid exposure. Electrical manufacturers favor our BAPS for insulating varnishes and laminates where continuous operation at 200°C is the norm. Unlike basic phenolics—which can fail through embrittlement and hydrolysis—our sulfonyl-bridged structure delivers both polarity and backbone rigidity. Those attributes let compounders maintain flame resistance and low dielectric constants, even as dimensional stability and bond strength stay tight.
Ever since environmental restrictions began choking the use of halogenated epoxy resins, engineers flagged BAPS as a natural fit in new halogen-free, low-smoke applications. Formulators found that this molecule, with its diallyl side arms, plugs directly into reaction chemistries for casting, filament winding, and prepreg manufacturing. Standard bisphenol S or A often swells in humidity or loses gloss during prolonged weathering; in contrast, the allyl-modified system traps its network tightly on cure, lowering water uptake and extending gloss retention far beyond traditional systems. Formulators notice this effect as soon as they compare moisture absorption data: typical BAPS-cured resins will soak up less than half the water of comparable epoxies, and this plays out over years in field tests, not just quick lab soaks.
Another side to this improvement lies in glass transition temperatures. By shifting to a backbone featuring both sulfone and allyl groups, compounders regularly hit cure schedules that land Tg values fifty degrees above what unmodified bisphenol S achieves—pushing composite functionality further into the extreme temperature territory that aerospace, automotive, and power electronics demand.
From hard data gathered at our partners' labs, we see dielectrics for BAPS-based laminates routinely land in the 3-4 permittivity range, and breakdown voltage scores climb above those possible with standard bisphenol A diglycidyl ethers. Customers crafting PCB base materials run hundreds of pressure cooker tests and find that our BAPS handles repeated cycles without the microcracking or delamination associated with cheaper, less pure precursors. It's the combination of molecular purity and the inherent polar sulfonyl group that secures this longevity. Bonds stay tight under cycling stress. Cured resins resist both acid and oxidative environments well, serving demanding markets ranging from wind turbine blades to high-voltage switchgear housings.
On the mechanical side, cured BAPS resins match and sometimes outperform high-grade novolacs for flexural strength, all while weighing in lighter and allowing more flexible design geometry. This lets molders and composite fabricators sidestep traditional tradeoffs between mechanical endurance and processability. We're proud to learn from daily feedback, fine-tuning crystal morphology and handling moisture sensitivity during storage, as we recognize the practical impact these traits carry on busy production floors.
Not every application asks for the same thing. Sometimes a compounder wants long pot life for hand lay-up or filament winding; sometimes rapid throughput for injection molding or hot press cycles. We learned not to relegate these as afterthoughts. Over years, we have shaped our BAPS not only for purity but for flow—by screening crystal size, drying profiles, and particle shape. The final product blends seamlessly with co-monomers, fillers, and cure agents, slashing prep time and minimizing dusting or caking even under tough warehouse conditions.
In prepreg lines and continuous laminators, consistent particle morphology sets the tone for predictable melt flow and even resin distribution, cutting defects and scrap during long runs. For composite engineers and resin chemists, little annoys more than seeing premature gelation or uneven filler dispersion. We've run full shifts side-by-side with customers, adjusting grind time and dryer control, catching the issues before they show up on their QC logs.
Precision at every stage—feeding, melting, blending—translates into smoother in-field use, lower machine clean-outs, and far less material waste. The benefits of a well-considered BAPS extend outside the beaker, turning into real cost savings and less production downtime. Hands-on experience with both small and large-scale customers keeps us alert to new challenges—be it a new regulatory demand, an unexpected filler blend, or a shift in global feedstock sourcing.
Nobody can afford to dance around safety concerns today, from traceability to end-of-life recycling. For years, we've harmonized our BAPS manufacturing with evolving standards for heavy metals, PCA residue, and SVHC declarations outlined by REACH, RoHS, and TSCA. Batches are logged to the reactor and day, supported by spectrographic records and impurity profiles, so compliance paperwork isn't an afterthought but part of the process flow.
Customers demand documentation and confidence—certified purity, full traceability, and reliable hazard communication. Our hands-on experience with regulatory audits helps us support safety data sheets, assist in downstream user notifications, and tackle new restrictions as soon as they appear. We view regulatory certainty as not only a legal point, but a matter of long-term trust, making sure compounders don't face surprises years down the line.
Early in our production history, we encountered a recurring theme: each end user ran a slightly different process, sometimes tuning cure speeds, sometimes blending with novel hardeners, often testing against new glass or carbon reinforcement forms. These demands drove us to rethink particle engineering, tweaking not only yields but melt-point consistency, powder flow, and packaging compatibility. Reports from formulators led us to rework our drying steps until dusting and caking virtually disappeared. Today, every drum or sack we send out ships after a weeklong stability hold in controlled humidity rooms, reflecting lessons learned from years of direct troubleshooting in customer plants.
Experienced compounders often combine our BAPS with other allyl, cyanate, or maleimide monomers, creating networks tailored to unique profiles for impact strength, heat rating, or environmental durability. Our technical teams take pride in bridging the gap between raw batch chemistry and the requirements of real business lines, not only fielding questions but heading off problems as users shift process equipment, scale up, or begin working to new emission benchmarks.
On the surface, every supplier promises purity and performance. Over time, our close relationships with fabricators and resin chemists highlight just how much the source and method matter. Slight contamination with chloride or phenol residues can cause color instability or spur side reactions in sensitive matrices. Unchecked, these create headaches in clear coats, microelectronics, or specialty films. Our plant’s air-handling, solvent recovery, and reactor maintenance programs sit at the root of minimizing these variables. We aren’t afraid to pull product or halt a lot that veers from specification, even if it means taking a financial hit, since we've learned that the small details in raw material translate to massive downstream effects.
Packaging choices also make a difference. We moved away from generically sourced bags to dust-tight, moisture-sealed drums with tamper-evident tabs, keeping BAPS dry and uncontaminated from origin to delivery dock. We repeatedly see the difference on customer QC shelves: free-flowing powder, stable for months, letting them sample on demand rather than scrambling to break up hard cakes.
Our customers keep us honest. New technologies—from hydrogen storage tanks to 5G base stations—ask for higher purity, lower ionic contamination, and ever-tighter physical property windows. Each wave of R&D brings new formulations, tougher test standards, and demand for transparency on sourcing, environmental impact, and lifecycle tracking. Our response grows from practical daily experience, fusing chemical skill with process discipline and open technical support.
Collaboration with users—whether via custom drying profiles, alternate packaging, or just sharing lab data—pushes us to develop control points in synthesis that guarantee flexibility without raising cost or diluting what sets our BAPS apart. Some processes require exact melt range or residual moisture levels, so we introduced optional secondary drying and ultra-low dust grades, always guided by field feedback.
It's easy to forget the unique balance a well-made specialty monomer brings to process chemistry and finished parts. We’ve seen rigid protocols for resin compounding fall short unless the specialty chemicals underpinning those workflows match the application’s needs from the ground up. Over the years, we’ve trained staff to remain flexible, drawing on both lab troubleshooting and floor-level production feedback. That flexibility sometimes means rerunning a batch after seeing subtle changes in reactivity, or integrating external QC checks at extra cost, because past experience has shown that slightly off-ratio materials can cause headaches—and unnecessary expense—down the processing line.
Our support extends to running trial batches for up-and-coming applications, such as fire-resistant train interiors or energy-efficient wind turbine composites. Laboratory collaboration doesn’t end at the factory gate: we spend time crafting new blends, answering queries about alternative hardeners, or validating shelf life under exotic storage protocols. Users facing tough corner cases find partners in our team willing to push past textbook answers for practical solutions. The most robust feedback often comes not from well-lit conference rooms, but shop floors where failures mean lost hours and missed delivery windows.
Markets for high-performance thermosets refuse to stay static. Every year, global shifts in raw material logistics, environmental constraints, and user expectations spur new iterations of product and process. We listen carefully as customers share changes in regulatory frameworks, supply chain reliability, and pressure to cut overall cost. Over time, small tweaks in process—such as improving reactor feedstock traceability, or broadening solvent recovery—add up, thanks to open dialogue with users who notice trends and share test results.
Recent years saw a marked rise in demand for more environmentally friendly composite matrices, with calls to justify every additive and precursor on both technical and sustainability grounds. We responded by ramping up documented waste reduction in our plant, switching several process aids to bio-derived or recycled sources, and reporting full environmental impact data on request.
For customers pursuing greener product lines, we offer ultra-low free phenol content and specifically fractionated BAPS for waterborne resin systems, hinging on practical know-how gained over thousands of production hours. As our customers shift their purchasing criteria and start requiring life cycle data for their material audits, we regularly supply supporting records to make downstream certifications and reporting smoother.
Looking ahead, we see specialty monomers such as our BAPS not only outperforming older standards, but actively supporting new manufacturing practices. Experience shows that precise sourcing, relentless quality review, and collaborative development serve not simply the current market but the inventions of tomorrow. As processes become more sensitive and field requirements more exact, our production lines adapt.
Our approach remains rooted in decades of learning from real-time production feedback and failures. This gives us the tools to push for even tighter purity levels, finer control of particle characteristics, and smarter packaging solutions. At each stage, input from partners—be it a chemist optimizing prepreg schedules or an engineer scaling up composite busbars—influences decisions on batch changes, testing protocols, or logistical tweaks.
We see each project as a new opportunity to tune product to application, keeping an open channel with users and refining processes based on what works in the real world. Solutions to practical problems rarely show up in a data sheet; more often, they emerge after hours spent alongside users, diving into root causes and swapping experience.
As demands shift and the boundaries of polymer science widen, we stay grounded in both tradition and innovation. Developing our 4,4'-Sulfonylbis[2-(Prop-2-en-1-yl)phenol] goes beyond technical prowess or reliable supply. What matters in the end are trust, accountability, and a willingness to listen and adapt. Our journey building, testing, and delivering this specialty monomer for leading-edge a pplications has proven that consistent, transparent experience builds results that last.
Future applications will push for more—higher thermal ratings, lower emissions, leaner process waste. The lessons we draw from every ton produced and every technical call handled shape the next improvements. By standing steady as a manufacturer who learns and adapts, we continue to help customers break new ground, sure in the knowledge that the right materials, made well, help shape a better future for industries that depend on performance, reliability, and trust.
