In the polyether-modified silicone (PES) spectrum, the "EO/PO ratio and end-cap structure" of polyether side-chains and the "800-3000cSt broad-window molecular weight" jointly dictate cloud-point boundary in high-temp aqueous systems, wetting-spreading power on hard surfaces/fibers, and foam-homogenizing stability in polyurethane. Conventional PES (e.g., IOTA 2000 trisiloxane series) cloud at ~40℃, rapidly precipitating and deactivating in >80℃ hot wash, high-temp dyeing, or PU curing; low-viscosity (<200cSt) PES may have acceptable cloud but spreads too fast for uniform foam. As daily-chem high-temp detergents, textile high-temp dyeing auxiliaries, and PU soft/rigid foam homogenizers demand "cloud point 80-95℃, 100% active, non-ionic non-toxic, 0.5-2% broad-dose instant," sourcing a CAS 68937-55-3 non-ionic polyether-dimethylsiloxane with colorless/pale-yellow transparent, viscosity 800-3000mm²/s, 1% aq cloud 80-95℃ has become the core gap for domestic high-cloud PES localization.
Addressing this "high-temp non-turbid" pain point,
Anhui IOTA Silicone Oil Co., Ltd. (IOTA) officially launches
High Cloud-Point Polyether Silicone IOTA 2204 (polyether-modified polydimethylsiloxane, CAS 68937-55-3). Characterized by "colorless or pale-yellow transparent liquid, viscosity 800-3000mm²/s (25℃), 100% active, cloud point 80-95℃ (1% aq), recommended 0.5-2%, 200kg/1000kg PE drum, 6-month shelf (unopened), non-haz," and backed by "high-EO polyether block + broad-vis 800-3000cSt even-spread + cloud 80-95℃ high-temp clear," it serves as the "high-cloud silicone anchor" for daily-chem hot wash, textile dyeing, and PU foam homogenization.
Molecular Architecture: High-EO Polyether + Broad-Vis Even-Spread + 100°C Clear 3D Logic
The core competitiveness of IOTA 2204 stems from its "polyether segments (high-ratio EO + proper PO end-cap) grafted/blocked onto polysiloxane backbone" nonionic surfactant architecture:
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High-EO Ratio Lifts Cloud Point: EO proportion significantly higher than conventional PES—strong hydrophilicity pushes "cloud point" to 80-95℃; fully soluble and clear below 80℃, only precipitates above cloud—well above process temps of daily wash (40-60℃), textile dye (60-80℃), PU foam (40-70℃); no demulsification, no deactivation.
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Broad-Vis 800-3000cSt Even-Spread: MW covers mid-high viscosity—lower end (800-1500cSt) for fast-spread wetting/foam, higher end (1500-3000cSt) for long-lasting foam-stabilizing/thickening; much broader fit than narrow-vis products.
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100% Nonionic Physiologically Inert: No ionic groups—fully compatibilizes with anionic/cationic/amphoteric surfactants, non-irritating to skin (cosmetic-grade safe), no over-defoaming, good foam stability.
Performance Leap: From "40℃ Break" to "95℃ Still Clear"
Incorporating IOTA 2204 enables qualitative leaps:
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Daily-Chem Hot Wash: 0.5-1.5% in concentrated laundry/dishwash—fully clear at 80℃ hot wash, strong oil emulsification, no silicone residue after rinse.
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Textile High-Temp Dye: 0.5-2% in pre-treatment bath for polyester/nylon HT dye—below 95℃ fiber wets evenly, no silicone spots, no dyeing defects.
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PU Soft/Rigid Foam: 0.5-2% in TDI/MDI soft foam and cyclopentane/245fa rigid foam—stays emulsified during exotherm peak (60-80℃), uniform fine cells, no collapse, no coarse pores.
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Industrial Hot Clean: 0.5-1.5% in high-temp aqueous metal/electronics cleaner—spray at >80℃ remains clear, oil roll-off excellent.
Application Penetration: From Laundry Liquid to PU Rigid Foam
IOTA 2204 covers sectors triply sensitive to "high-temp clear + emulsify/foam-homogenize + nonionic safe":
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Daily Chemicals: Concentrated laundry liquid, dishwash, shampoo (blend), hard-surface cleaner.
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Textile Dyeing: High-temp dye auxiliaries, pre-treatment penetrant, fabric softener base.
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PU Foam: Soft foam homogenizer, rigid foam emulsifier/stabilizer, CASE (coating/sealant/elastomer/adhesive) leveling modifier.
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Industrial Cleaning: High-temp aqueous cleaner, metal degreaser, electronics assembly wash.
IOTA Technical Guide: Broad-Vis Select, High-Temp Stable
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Daily/Clean: Direct into water-phase formula (0.5-1.5%), stir to dissolve at room temp; if formula has high electrolyte (>10% NaCl), pre-dissolve in propylene glycol before water phase.
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Textile Dye: Add at bath preparation (0.5-2%), co-bath with dye/dispersant, no extra emulsification; for closed HT (>100℃) degradation risk is low, recommend pH 5-9.
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PU Foam: Add during polyol pre-mix (0.5-2%), synergize with silicone foam stabilizer; note potential mild Sn complexation by polyether—pilot to confirm.
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Taboo Red Line: Non-haz but moisture-seal (polyether end absorbs humidity → viscosity drifts, premature crosslink); avoid long-term strong acid/base (Si–O–C may cleave); read MSDS before use.
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Storage: 200kg/1000kg PE drum; cool ventilated dry; shelf 6 months (unopened), retest appearance/viscosity/cloud-point and extend if qualified; non-haz transport.
Industry experts note that under concentrated daily-chem hot-wash普及, textile energy-saving (mid-temp → high-temp dyeing efficiency) and PU foam quality-upgrade pull, high cloud-point polyether silicones are upgrading from "Momentive/Shin-Etsu import followers" to "80-95℃ high-temp non-break reference modified silicones." IOTA 2204, with its "CAS 68937-55-3 + cloud 80-95℃ + 800-3000cSt broad-vis + 100% active" hard metrics,
fills the domestic supply chain gap for high cloud-point polyether-modified silicones in daily-chem/textile/PU foam fields, providing a mass-producible path to replace imported Momentive L-series, Shin-Etsu KM-series for downstream daily-chem, dyeing auxiliaries, and PU foam makers. This confirms domestic PES oils are advancing steadily along "low-cloud → mid-cloud → high-cloud (80-95℃)," with growing technical say in high-temp aqueous surfactant key materials.
