Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Evonik Dynasylan POS Phenyltributanoneoximesilane

Evonik Dynasylan POS Phenyltributanoneoximesilane is a phenyl-functional oxime-cure silane coupling agent from Evonik’s Dynasylan® POS series. It enhances adhesion between organic polymers and inorganic substrates—especially in RTV-1 silicone sealants—offering excellent storage stability, low volatility, and rapid, non-corrosive curing without acid byproducts.
  • evonik dynasylan pos phenyltributanoneoximesilane_ef07d592
  • evonik dynasylan pos phenyltributanoneoximesilane_ef07d592

Features Of Evonik Dynasylan POS Phenyltributanoneoximesilane

  1. Highly reactive phenyl-substituted oxime-functional silane for rapid, low-odor condensation curing.

  2. Excellent hydrolytic stability due to sterically hindered tributyloneoxime leaving groups.

  3. Superior adhesion promotion to glass, metals, and filled polymers in moisture-curing sealants and adhesives.

  4. Low volatility and reduced skin sensitization potential compared to acetoxy- or alkoxy-silanes.

  5. Enables formulation of one-component, neutral-cure systems compliant with VOC and REACH regulations.

Typical Applications Of Evonik Dynasylan POS Phenyltributanoneoximesilane

  1. Neutral-cure silicone sealants for architectural glazing and façade construction.

  2. High-performance hybrid polymer (SPUR, MS Polymer) adhesives and sealants.

  3. Moisture-curing elastomeric coatings for metal and concrete substrates.

  4. Reinforced composites requiring enhanced filler–matrix interfacial bonding.

  5. Electrical encapsulation compounds where low ionic impurity and thermal stability are critical.

Specifications Of Evonik Dynasylan POS Phenyltributanoneoximesilane

Chemical TypePhenyltributanoneoxime silane
Product FormLiquid
AppearanceColorless to pale yellow clear liquid
Density (20 °C)1.03–1.06 g/cm³
Refractive Index (20 °C)1.485–1.495
Viscosity (25 °C)2.5–4.0 mPa·s
Flash Point (PMCC)≥ 95 °C
Storage Stability (unopened, 25 °C)≥ 12 months


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