Dimethicone/PEG-10/15 Crosspolymer

Dimethicone/PEG-10/15 Crosspolymer
  • Product Code: 127679

cross-linked silicone elastomer in which a dimethicone backbone is grafted with short polyether (PEG-10 and PEG-15) chains.

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Test Name Specification
Appearance Clear and transparent to semi-transparent colloid, may have slight yellow or reddish color, no visible impurities
Odor Odorless
Viscosity (25°C) mm²/s 250,000-580,000
D4 (%) <0.1
Specific gravity (25°C) 0.94-0.98

Dimethicone/PEG-10/15 Crosspolymer is a cross-linked silicone elastomer in which a dimethicone backbone is grafted with short polyether (PEG-10 and PEG-15) chains.

  • Cross-linking gives it a three-dimensional gel network that thickens and suspends oils.

  • The PEG side-chains make the surface of the elastomer amphiphilic, so it can anchor both to silicone oils and to water droplets.

Function Practical effect in a formula
Primary emulsifier for water-in-silicone (W/Si) and W/O/W Can stabilize up to ≈ 90 % internal water phase without conventional surfactants, giving “water-break” sensory creams
Viscosity & structure builder Creates soft, cushiony gel matrices, suspends pigments/UV filters, reduces syneresis
Sensory modifier Adds silky slip, quick-dry, powdery after-feel, optical blurring of fine lines
Oil-soluble carrier Improves distribution of sunscreens and colorants across the skin surface
Electrolyte & pH tolerance Stable from pH ≈ 4 – 9 and moderate salt levels—useful in active-rich formulas

Target system As-supplied elastomer Notes
W/Si cream or gel 3 – 10 % Combine with a low-HLB silicone copolyol (e.g., PEG-10 dimethicone) or additional Specsil S-397 for maximum long-term stability.
Silicone suspension primer 1 – 5 % Gives “soft-focus” effect and sebum mattifying finish.
Hybrid O/W with silicone top-feel 0.5 – 2 % Post-add at < 40 °C to avoid air entrapment.

Process (cold-mix example for a 75 %-water W/Si gel):

  1. Oil phase – Dimethicone/PEG-10/15 Crosspolymer 5 %, dimethicone (5 cSt) 10 %, cyclopentasiloxane 3 %, isododecane 5 %.

  2. Begin slow propeller agitation; sprinkle in crosspolymer until fully wet-out (≈ 10 min).

  3. Aqueous phase – DI water 75 %, glycerin 3 %, preservative 0.5 %.

  4. Switch to moderate shear; add water phase slowly. Viscosity builds as droplets are trapped inside the silicone gel network.

  5. Homogenize 30 s at 3000 rpm to fine-tune droplet size, avoiding > 10 k rpm which can over-shear the network.

Heating above ≈ 70 °C can shorten PEG chains and thin the gel; keep to cold or < 45 °C processing when possible.



Compatibility & formulation pointers

  • Works with most organic sunscreens (EHT, DHHB, BEMT), pigments, silicone resins, sensory esters and volatile silicones.

  • Avoid very high levels of ethanol (> 20 %) or strong bases (pH > 10) which can collapse the elastomer.

  • For PEG-free or “clean-silicone” claims, swap to Dimethicone/Vinyl Dimethicone Crosspolymer and add a separate silicone copolyol surfactant.

  • Combine with micronized silica or boron nitride for extra oil control in primers.

Application: As an emulsifier in w/sil gel

How to mix: Mix in oil or silicone part

Usage rate: 0.1-10%

Product Description: Translucent gel

Dissolving: Can be dispersed in oil or silicone.

Storage: Can be stored at room temperature, but close the bottle tightly and keep away from sunlight or heat. The product has a shelf life of at least 2 years.

INCI Name : Dimethicone, Dimethicone/PEG-10/15 Crosspolymer




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Dimethicone/PEG-10/15 Crosspolymer

cross-linked silicone elastomer in which a dimethicone backbone is grafted with short polyether (PEG-10 and PEG-15) chains.

Dimethicone/PEG-10/15 Crosspolymer is a cross-linked silicone elastomer in which a dimethicone backbone is grafted with short polyether (PEG-10 and PEG-15) chains.

  • Cross-linking gives it a three-dimensional gel network that thickens and suspends oils.

  • The PEG side-chains make the surface of the elastomer amphiphilic, so it can anchor both to silicone oils and to water droplets.

Function Practical effect in a formula
Primary emulsifier for water-in-silicone (W/Si) and W/O/W Can stabilize up to ≈ 90 % internal water phase without conventional surfactants, giving “water-break” sensory creams
Viscosity & structure builder Creates soft, cushiony gel matrices, suspends pigments/UV filters, reduces syneresis
Sensory modifier Adds silky slip, quick-dry, powdery after-feel, optical blurring of fine lines
Oil-soluble carrier Improves distribution of sunscreens and colorants across the skin surface
Electrolyte & pH tolerance Stable from pH ≈ 4 – 9 and moderate salt levels—useful in active-rich formulas

Target system As-supplied elastomer Notes
W/Si cream or gel 3 – 10 % Combine with a low-HLB silicone copolyol (e.g., PEG-10 dimethicone) or additional Specsil S-397 for maximum long-term stability.
Silicone suspension primer 1 – 5 % Gives “soft-focus” effect and sebum mattifying finish.
Hybrid O/W with silicone top-feel 0.5 – 2 % Post-add at < 40 °C to avoid air entrapment.

Process (cold-mix example for a 75 %-water W/Si gel):

  1. Oil phase – Dimethicone/PEG-10/15 Crosspolymer 5 %, dimethicone (5 cSt) 10 %, cyclopentasiloxane 3 %, isododecane 5 %.

  2. Begin slow propeller agitation; sprinkle in crosspolymer until fully wet-out (≈ 10 min).

  3. Aqueous phase – DI water 75 %, glycerin 3 %, preservative 0.5 %.

  4. Switch to moderate shear; add water phase slowly. Viscosity builds as droplets are trapped inside the silicone gel network.

  5. Homogenize 30 s at 3000 rpm to fine-tune droplet size, avoiding > 10 k rpm which can over-shear the network.

Heating above ≈ 70 °C can shorten PEG chains and thin the gel; keep to cold or < 45 °C processing when possible.



Compatibility & formulation pointers

  • Works with most organic sunscreens (EHT, DHHB, BEMT), pigments, silicone resins, sensory esters and volatile silicones.

  • Avoid very high levels of ethanol (> 20 %) or strong bases (pH > 10) which can collapse the elastomer.

  • For PEG-free or “clean-silicone” claims, swap to Dimethicone/Vinyl Dimethicone Crosspolymer and add a separate silicone copolyol surfactant.

  • Combine with micronized silica or boron nitride for extra oil control in primers.

Application: As an emulsifier in w/sil gel

How to mix: Mix in oil or silicone part

Usage rate: 0.1-10%

Product Description: Translucent gel

Dissolving: Can be dispersed in oil or silicone.

Storage: Can be stored at room temperature, but close the bottle tightly and keep away from sunlight or heat. The product has a shelf life of at least 2 years.

INCI Name : Dimethicone, Dimethicone/PEG-10/15 Crosspolymer

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