Quick-Pick Selection Table
| Application | Chemistry | Key Grade Parameter | Recommended SKU |
|---|---|---|---|
| Textile softening — durable, luxury hand-feel | Amino (side-chain) | AEW 3,000–8,000 g/mol; viscosity 500–3000 cSt | amino-silicone-oil-side-chain |
| Hair conditioning — durable slip, frizz control | Amino (side-chain) | AEW 5,000–15,000; low viscosity 100–500 cSt | amino-silicone-oil-side-chain |
| Silicone rubber crosslinking (LSR, RTV-2) | H-terminated PDMS | Si-H 0.03–0.1 wt%; 2–50 cSt | hydrogen-terminated-silicone-oil |
| Silicone rubber chain extension (LSR) | H-terminated PDMS | Si-H 0.01–0.03 wt%; 100–1000 cSt | hydrogen-terminated-silicone-oil |
| Epoxy coating modifier — flexibility, adhesion | Epoxy-terminated | EEW 800–2000 g/mol; 500–5000 cSt | epoxy-terminated-silicone-oil |
| Silane/epoxy adhesive promoter for glass | Epoxy-terminated | EEW 600–1200; low viscosity 50–200 cSt | epoxy-terminated-silicone-oil |
| Side-chain methyl-H PDMS — hydrosilylation synthesis | Methyl-H silicone (PMHS) | Si-H 1.0–1.6 wt%; 50–500 cSt | methyl-hydrogen-silicone |
All Grades (by chemistry class)
Amino Silicone Oil — Side-Chain Type(2)
Side-chain amino silicone oils carry pendant aminopropyl or aminoethylaminopropyl groups distributed along the PDMS backbone (not at chain ends). This placement maximises interaction density with fibre surfaces without the chain-end steric restrictions of terminal amino types. Key parameters: amine equivalent weight (AEW, g/mol — higher AEW = less amine content = less yellowing, softer feel; lower AEW = stronger adsorption, more durable), viscosity (determines emulsifiability and film thickness), and secondary vs. primary amine ratio (secondary amines give better yellowing resistance). The dominant chemistry for premium fabric softeners, dryer sheet actives, and salon-grade hair conditioners.
textile silicone auxiliaries
Side-Chain Amino Silicone Oil
CAS: 63148-62-9
Side-chain amino silicone oil carries aminopropyl or aminoethylaminopropyl groups distributed along the PDMS backbone. This architecture maximizes fiber contact density, delivering superior softness, smoothness, and elasticity to cotton, polyester, and blended fabrics at 0.5–3% on-weight-of-fabric (OWF). Amine value (0.05–1.5 mmol/g) governs softness intensity and yellowing tendency: high-amino grades (>0.5 mmol/g) provide heavy softness for towels and knitwear; low-amino hydrophilic grades (0.05–0.2 mmol/g) suit white and light-colored fabrics where yellowing is unacceptable.
عرض التفاصيل ←مواد تشحيم البلاستيك
Amino Functional Silicone Fluid
Amino Functional Silicone Fluid for silicone-based product formulation, offering unique thermal stability, lubricity, water repellency, and release properties.
عرض التفاصيل ←Epoxy-Terminated Silicone Oil(2)
Epoxy-terminated PDMS carries epoxide (glycidyl) groups at both chain ends, making it a reactive compatibiliser between silicone and epoxy systems. The epoxide groups can ring-open with amines, acids, or anhydrides under mild conditions, allowing covalent incorporation into epoxy networks or bonding to amine-functionalised substrates (glass, wood, treated textiles). Primary use cases: (1) toughening and flexibilising epoxy coatings and adhesives — 2–10 phr addition reduces brittleness without sacrificing Tg significantly; (2) adhesion promoter for silicone coatings on glass or metal; (3) reactive intermediate for block copolymer synthesis. EEW (g/mol) and viscosity are the two key spec parameters.
reactive silicone modifiers
Epoxy-Terminated Silicone Oil (Ep-PDMS)
CAS: 102782-97-8
Epoxy-terminated polydimethylsiloxane (Ep-PDMS) carries glycidoxypropyl epoxide groups at both chain ends. The epoxide ring reacts with amines, carboxyls, and hydroxyls under mild heat, enabling covalent bonding to fiber surfaces for wash-durable textile finishing, or integration into epoxy resin networks as a toughening modifier. Epoxy equivalent weight (EEW, 350–3000 g/eq) and viscosity (50–5000 cSt) are the primary selection parameters: lower EEW grades offer higher reactivity for crosslinking; higher EEW grades contribute greater PDMS character and flexibility to composite systems.
عرض التفاصيل ←مواد تشحيم البلاستيك
Epoxy Functional Silicone
Epoxy Functional Silicone for silicone-based product formulation, offering unique thermal stability, lubricity, water repellency, and release properties.
عرض التفاصيل ←Hydrogen-Terminated Silicone Oil (H-PDMS)(2)
H-PDMS carries reactive Si-H groups exclusively at both chain ends. In platinum-catalysed hydrosilylation, Si-H reacts with vinyl groups on the base polymer (vinyl-terminated PDMS or vinyl-bearing MQ resin) to form Si-C bonds, building the crosslinked or chain-extended network without byproducts. Si-H content (wt%) and viscosity are the critical specification parameters. Low Si-H, high-viscosity grades (100–1000 cSt) are chain extenders that control network topology and tack; high Si-H, low-viscosity grades (2–50 cSt) are crosslinkers that set cure density and hardness. Distinct from side-chain methyl-hydrogen PDMS (PMHS) in reaction topology and crosslink density contribution.
silicone intermediates
Hydrogen-Terminated Silicone Oil (H-PDMS)
CAS: 70900-21-9
Hydrogen-terminated polydimethylsiloxane (H-PDMS) carries reactive Si-H groups exclusively at both chain ends, making it the preferred chain-extender and crosslinker in platinum-catalyzed addition-cure silicone rubber systems. Si-H content (0.03–0.5 wt%) and viscosity (2–1000 cSt) define reactivity: low-viscosity grades (2–10 cSt) act as crosslinkers; higher-viscosity grades (100–1000 cSt) serve as chain extenders and surface-treatment intermediates. Unlike side-chain hydride PDMS (PMHS), the terminal Si-H placement gives controlled network topology and predictable cure kinetics.
عرض التفاصيل ←مواد تشحيم البلاستيك
Methyl Hydrogen Silicone Fluid
Methyl Hydrogen Silicone Fluid for silicone-based product formulation, offering unique thermal stability, lubricity, water repellency, and release properties.
عرض التفاصيل ←Frequently Asked Questions
▶Amino silicone — why does it yellow, and how do I minimise it?
Yellowing comes from primary amine (–NH₂) oxidation. Minimise it by using high-AEW grades (less amine content per gram of silicone), secondary-amine types (e.g. diaminopropyldimethicone), or by selecting low-yellowing formulations with antioxidant stabilisers.
Amino silicone — why does it yellow, and how do I minimise it?
Yellowing comes from primary amine (–NH₂) oxidation. Minimise it by using high-AEW grades (less amine content per gram of silicone), secondary-amine types (e.g. diaminopropyldimethicone), or by selecting low-yellowing formulations with antioxidant stabilisers.
▶H-PDMS: how do I specify the right Si-H content for my silicone rubber formulation?
Si-H content is specified in wt% or mmol/g. Target a [Si-H]/[vinyl] molar ratio of 1.1–2.5:1 (slight Si-H excess ensures complete vinyl consumption). Low Si-H (0.01–0.03 wt%) = chain extender; high Si-H (0.05–0.15 wt%) = crosslinker. Match viscosity to desired network flexibility.
H-PDMS: how do I specify the right Si-H content for my silicone rubber formulation?
Si-H content is specified in wt% or mmol/g. Target a [Si-H]/[vinyl] molar ratio of 1.1–2.5:1 (slight Si-H excess ensures complete vinyl consumption). Low Si-H (0.01–0.03 wt%) = chain extender; high Si-H (0.05–0.15 wt%) = crosslinker. Match viscosity to desired network flexibility.
▶Can epoxy-terminated silicone be used to toughen standard epoxy resins?
Yes — add 3–10 phr of epoxy-terminated silicone to the epoxy component (Part A) before mixing with hardener. It co-cures with the epoxy network, forming silicone-rich microphases that absorb crack energy. Impact resistance increases 30–80% depending on loading and cure chemistry.
Can epoxy-terminated silicone be used to toughen standard epoxy resins?
Yes — add 3–10 phr of epoxy-terminated silicone to the epoxy component (Part A) before mixing with hardener. It co-cures with the epoxy network, forming silicone-rich microphases that absorb crack energy. Impact resistance increases 30–80% depending on loading and cure chemistry.
▶What are the storage requirements for these functional silicone oils?
All three are neat (non-aqueous) fluids with excellent shelf life (24–36 months) when stored at 10–35°C in sealed containers away from moisture, acid, base, and platinum- or tin-containing materials. H-PDMS is the most sensitive — avoid trace amines or Pt catalysts which catalyse premature Si-H reaction.
What are the storage requirements for these functional silicone oils?
All three are neat (non-aqueous) fluids with excellent shelf life (24–36 months) when stored at 10–35°C in sealed containers away from moisture, acid, base, and platinum- or tin-containing materials. H-PDMS is the most sensitive — avoid trace amines or Pt catalysts which catalyse premature Si-H reaction.