Among terminal forms of hydrogen silicone, pure oil (IOTA 203/616/605) serves synthesis and crosslinking; emulsion goes straight to the line: textile pad bath, PU shoe-sole release, stone penetration, gypsum board moisture barrier—all demand "water-dilutable, no oil bleed, no break at high mold temp." As waterborne release agents replace solvent types, fluorine-free waterproofing replaces PFOS finishes, and invisible protection for inorganic building substrates tightens, a milky bluish O/W emulsion, 30±2% solids, 0.985 gravity, 3000 r/min×15 min no-split, miscible with cold water emerges as the factory-grade aux folding "Si–H crosslink film" into an oil-in-water interface. Addressing this "waterborne hydrogen" slot, Anhui IOTA Silicone Oil Co., Ltd. (IOTA) releases Hydrogen Silicone Emulsion IOTA 2021. Defined by core parameters—methyl hydrogen silicone oil + nonionic tuned emulsifier, Si–H condenses under metal salt to hydrophobic film, blended with hydroxy emulsion for softness—it carries the triple attributes of "water-dilutable + high-mold-temp stable + release/repel dual," serving as the "waterborne silicone film anchor" for mold release, fabric proofing, leather/paper moisture-proofing, and stone/cement protection. Emulsion Architecture: Oil-Phase Si–H + Nonionic Interfacial Skin IOTA 2021 is not crude water-stirring of H-oil, but side-hydrogen silicone (from IOTA 203 class or high-H oil) homogenized with nonionic surfactants into narrow-size O/W:

• Oil-Phase Active Port: Dispersed H-oil keeps Si–H; under metal salt (Zn/Oct/Zr) or bake heat, Si–H condenses with water/substrate OH releasing H₂, forming Si–O–Si + Si–O–substrate hydrophobic skin (contact angle >110°).
• Nonionic Stable Bed: EO/PO block nonionic holds pH 6.5-7.0 near-neutral, avoiding strong-base Si–H self-H₂ break; 3000 r/min×15 min no split means narrow PSD and strong emulsifier film.
• Waterborne Process Friendly: Dissolves in cold water, dilutable to 200× still homogeneous; no spray-gun clog, no pad-roll stick, no brush sag; at high mold temp water evaporates and silicone crosslinks in situ without charring.
• Wide-Temp Skin: Post-film siloxane network stays flexible at −70℃ and non-melt non-stick at 300℃, fitting PU foam (mold 160-200℃), rubber vulcanization, composite cure.

Performance Leap: From Single Release to Release+Repel Same Body In PU release, textile waterproofing, and building protection lines, 2021 pays off at once:

• Mold Release: Sprayed on PU shoe-sole/seating/insulation mold, forms ultra-thin thermal film, immiscible with PU, no transfer stain, no steel/nickel corrosion; metal-nonmetal left lubricated, mold upkeep drops.
• Textile Repel-Soft: With hydroxy silicone emulsion in pad bath, Si–H and OH co-condense → waterproof + soft + breathable, tear/abrasion up, fluorine-free, fits workwear/tent/nonwoven.
• Building Invisible Shield: Spray/brush on marble/cement/gypsum/board, penetrates and films against efflorescence, damp, stain; substrate look unchanged.
• Leather & Paper: Leather anti-mildew damp-proof without stiffening; carton/corrugated moisture and anti-block.

Application Penetration: From PU Shoe Mold to Marble Counter IOTA 2021 precisely lands on the interface needing "waterborne green, Si–H film, factory dilutable":

• Molded Release: PU soft/hard foam, shoe sole, auto interior, FRP composite, rubber parts.
• Textile Finish: Waterproof workwear, home textile, glass-fiber cloth, nonwoven.
• Building Protection: Exterior stone, metro tile, gypsum board, cement member.
• Daily Protection: Leather care, paper moisture, ceramic/glass hydrophobic.

Release-agent blenders read 2021 plainly: it welds "high-H silicone reactive film" with "nonionic emulsion factory-water-dilutable" into one; at 30±2% solids, near-neutral pH, centrifugal-stable, PU plants no longer self-emulsify H-oil (that step bleeds oil and breaks at mold temp), just take 2021 dilute-and-spray; release and building waterproof no longer split into two inventories.