Direct supply allocations from Yanxatech (YANXA). Verified technical parameters, batch-traceable certificates of analysis, and export-compliant freight readiness across critical production lines.
The convergence of low-temperature flexibility, near-zero gas permeability, and advanced synthetic functionalization in mission-critical manufacturing sectors.
Butyl Liquid Rubber is primarily derived from low- to medium-molecular-weight polyisobutylene (PIB) copolymerized with controlled fractions of isoprene (typically 0.5% to 3.0 mol%). The densely packed methyl side groups on the all-carbon saturated backbone provide exceptional steric hindrance. This unique molecular architecture minimizes free volume within the matrix, suppressing the transmission of atmospheric gases (oxygen, nitrogen) and moisture vapor to values significantly superior to polyurethane, polysulfide, or silicone elastomers.
The global merchant market for liquid butyl and high-reactivity polyisobutylene (HR-PIB) is experiencing sustained volume growth, accelerated by the transition toward high-efficiency thermal envelopes in construction and electric vehicle battery enclosures. Industrial supply hinges on high-purity isobutylene feeds derived from catalytic cracking or isobutane dehydrogenation. Yanxatech balances downstream refinement through precision cold-polymerization reactors, delivering narrow polydispersity indices (PDI) and minimizing residual monomer fractions.
Global regulatory frameworks such as EU REACH, RoHS, and California Proposition 65 have accelerated demand for low-VOC, solvent-free liquid butyl variants. While traditional solid butyl requires intense mastication and solvent dispersion, liquid butyl rubber grades allow solventless 100%-solids compounding. Furthermore, functionalized halogenated liquid butyl (brominated/chlorinated) enables co-vulcanization with general-purpose diene rubbers, expanding its utility in aggressive chemical environments.
Technical Distinction: Unlike conventional room-temperature vulcanizing (RTV) silicones that offer high temperature resistance but high gas permeability, liquid butyl rubber provides unmatched vapor barrier integrity (Moisture Vapor Permeability < 0.05 g/m²·24h). For applications requiring absolute hermetic isolation—such as lithium-ion battery modules and insulated glazing units—butyl liquid rubber remains the indispensable barrier elastomer.
Indicative pricing matrix based on molecular weight distribution, functionality, and standard packaging units. Official spot prices fluctuate based on monomer feedstocks and energy tariffs.
| Grade Classification | Molecular Weight (Mn, g/mol) | Kinematic Viscosity (100°C, mm²/s) | Key Performance Attribute | Standard Packaging | Indicative Price (USD/MT, FOB) |
|---|---|---|---|---|---|
| YX-BLR-1000 (Low Viscosity) | 12,000 – 18,000 | 2,500 – 4,000 | High flowability, deep potting penetration | 200L Steel Drum (180kg) | $2,850 – $3,200 |
| YX-BLR-2500 (Standard Industrial) | 25,000 – 35,000 | 8,500 – 12,000 | Balanced tack, roof coating & flashing | 1000L IBC / ISO Tank | $2,650 – $2,950 |
| YX-BLR-5000 (High Cohesion) | 48,000 – 60,000 | 25,000 – 38,000 | Cold-flow resistance, mastic tape matrix | 200L Open Head Drum | $3,100 – $3,450 |
| YX-BLR-HALO (Brominated Liquid) | 22,000 – 30,000 | 10,000 – 15,000 | Fast cross-linking, sulfur/peroxide active | 200L Coated Drum | $3,750 – $4,200 |
| YX-BLR-ELEC (Semiconductor Grade) | 30,000 – 40,000 | 12,000 – 16,000 | Ultra-low ionic impurities (Na, Cl < 5ppm) | 200L Nitrogen Purged | $4,100 – $4,800 |
*Disclaimer: Contract rates are subject to order volume tiers, container load consolidation (FCL vs LCL), and Incoterms 2020 specifications. Contact our sales office for valid spot quotations and lot testing parameters.
Engineered for pumpable, high-solids fluid operations without the shear-induced thermal degradation typical of standard masticated raw butyl slabs.
Maintains superior elastomeric elongation and structural flexibility at temperatures down to -65°C without crystallization or embrittlement cracking.
Volume resistivity exceeding 1.0 × 10¹⁵ Ω·cm and low dielectric loss factor (tan δ < 0.001), ensuring stable insulation for power infrastructure.
Immune to hydrolytic degradation, concentrated alkalis, dilute mineral acids, and persistent salt spray (tested past 3,000 hrs ASTM B117).
How global manufacturing plants deploy liquid butyl rubber compounds to resolve severe vapor permeability, electrical insulation, and chemical isolation challenges.
Lithium-ion pouch and prismatic cells are vulnerable to ambient moisture ingress, which reacts with lithium hexafluorophosphate (LiPF6) electrolyte to produce hydrofluoric acid. Liquid butyl sealants provide an impermeable gasket bead around pack lids and busbar interfaces. Its high dielectric resistance prevents electrical tracking between high-voltage battery modules and grounded chassis components.
In double-glass bifacial solar modules and heterojunction (HJT) panels, atmospheric moisture induces metallization corrosion and PID (Potential Induced Degradation). Hot-applied liquid butyl matrix strips along module perimeters block moisture penetration for the certified 25- to 30-year operational lifecycle, outperforming conventional EVA and POE cross-linked boundaries.
Single-ply EPDM, TPO, and metal roofing systems require hyper-elastic transition flashings around parapet walls, HVAC penetrations, and standing seams. Liquid butyl rubber forms an elastic, monolithic membrane that accommodates continuous thermal expansion and contraction cycles without fatigue splitting, resisting continuous ultraviolet radiation and standing water ponds.
Modern architectural fenestration requires dual-seal insulating glass. Liquid polyisobutylene-based primary sealants are continuously extruded onto spacer bars to form an absolute barrier against internal argon or krypton gas escape and exterior vapor ingress. Preserving noble gas fills directly correlates to sustained LEED building energy performance ratings.
Applied as a high-build corrosion-protection barrier for subsea pipeline joints, offshore rig splash zones, and ship ballast tanks. The complete saturation of the polymer backbone eliminates vulnerable double bonds, preventing oxygen-driven chain scission and ensuring zero water absorption under intense hydrostatic pressure.
Power transmission accessories rely on cold-shrinkable and heat-shrinkable splice sleeves lined with liquid butyl rubber mastic. The material permanently flows under ambient installation pressure into micro-voids, eliminating partial discharge phenomena and providing complete waterproofing across medium- to extra-high-voltage (EHV) distribution grids.
Next-generation polymer customization: transitioning from passive barrier pastes to reactive, bio-based, and co-curable elastomeric hybrid systems.
Traditional liquid butyl suffers from permanent cold creep under sustained physical loads. The introduction of alkoxy-silane and glycidyl-ether terminal functional groups allows the polymer to undergo moisture or catalytic secondary curing. This produces an interpenetrating polymer network (IPN) that retains classic butyl vapor-impermeability while introducing elastomeric recovery and high tensile modulus comparable to structural polyurethanes.
To reduce scope 3 carbon footprints, petrochemical research has demonstrated industrial-scale production of bio-isobutylene derived from non-food agricultural biomass fermentation (via isobutanol dehydration). Yanxatech is actively evaluating bio-synthesized liquid butyl monomers, matching the molecular weight distribution and barrier specs of fossil counterparts while lowering lifecycle greenhouse gas emissions by up to 68%.
Automated manufacturing lines (such as smartphone display assembly and EV cell pack lines) require rapid green strength. The development of acrylate-functionalized liquid butyl enables sub-second UV pin-curing followed by shadow thermal curing, eliminating lengthy oven cycles and empowering high-throughput robotic automated dispensing systems.
Full spectrum industrial chemicals and metallurgical compounds from Yanxatech System Industries Limited. Fully documented for direct export and multi-modal transport compliance.
Expert answers addressing viscosity calibration, cross-linking mechanisms, bulk logistics, and storage stability for wholesale chemical buyers.
While liquid EPDM provides excellent weatherability and liquid polysulfides offer notable solvent resistance, Butyl Liquid Rubber is superior in moisture and gas impermeability. Its water vapor transmission rate (WVTR) is roughly 5 to 10 times lower than polysulfide and up to 20 times lower than silicone, making it the premier choice for airtight and moisture-critical barrier formulations.
Standard liquid butyl polymers are non-curing, permanently plasticized viscous fluids. However, partially brominated variants (YX-BLR-HALO) or formulations compounded with quinoid, phenolic resin, or multi-functional isocyanate curing agents can achieve room- or elevated-temperature cross-linking. This creates a dimensional thermoset rubber with minimal permanent deformation.
Standard uncompounded liquid butyl rubber exhibits extraordinary chemical stability due to its fully saturated hydrocarbon backbone. Stored in original, unopened steel drums under dry conditions between 10°C and 35°C, the product possesses a validated shelf life of at least 24 months. It does not undergo spontaneous polymerization or phase separation during long-term storage.
Shipments are dispatched in 200L lined internal-epoxy steel drums (180–190 kg net) or 1000L composite intermediate bulk containers (IBCs). For major industrial processors, heated ISO tank containers (20–24 MT) are coordinated. Liquid butyl rubber is classified as non-hazardous for sea (IMDG) and air (IATA) transit, accompanied by GHS-compliant Safety Data Sheets and batch Certificate of Analysis.
Liquid butyl is fully miscible with aliphatic hydrocarbon resins (C5), hydrogenated C9 resins, polybutene oils, and terpene-phenolic tackifiers. It exhibits limited compatibility with aromatic oils and polar esters. Formulation engineers typically leverage polybutene oil combinations to adjust flow viscosity while preserving the master polymer's pristine barrier properties.
Every commercial lot released by Yanxatech undergoes analytical testing: Number Average Molecular Weight (Mn, via Gel Permeation Chromatography), Kinematic Viscosity at 100°C (ASTM D445), Loss on Heating/Volatile Matter (ASTM D5668), Ash Content (ASTM D5667), Color (Gardner scale), and Flash Point (ASTM D92). Full reports accompany export documentation.
Consult with Yanxatech's technical polymer engineers. Receive comprehensive product technical data sheets (TDS), safety documentation (SDS), and pilot test samples tailored to your exact application requirements.
