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

Evonik Dynasylan MTA Methyltriacetoxysilane

Evonik Dynasylan MTA is a methyltriacetoxysilane coupling agent from the Dynasylan® silane series, widely used as an adhesion promoter and crosslinker in sealants, adhesives, and silicone-based formulations. It enhances bonding to substrates like glass, metals, and minerals while enabling room-temperature curing. Its high reactivity and hydrolytic stability make it ideal for one-component moisture-curing systems.
  • evonik dynasylan mta methyltriacetoxysilane_7733024c
  • evonik dynasylan mta methyltriacetoxysilane_7733024c

Features Of Evonik Dynasylan MTA Methyltriacetoxysilane

  1. Highly reactive silane offering rapid room-temperature crosslinking with moisture.

  2. Excellent adhesion promotion to glass, metals, and mineral substrates without primer.

  3. Low volatility and favorable handling characteristics compared to chlorosilanes.

  4. Enables formation of flexible, durable silicone networks in one-component systems.

  5. Compatible with common organic polymers including acrylics, polyurethanes, and alkyds.

Typical Applications Of Evonik Dynasylan MTA Methyltriacetoxysilane

  1. Moisture-curing sealants for construction and automotive glazing.

  2. Adhesives requiring strong substrate bonding and environmental resistance.

  3. Coating additives to enhance scratch resistance and substrate wetting.

  4. Filler treatment for silica and calcium carbonate in silicone-modified composites.

  5. Hybrid polymer formulations (e.g., MS polymers) demanding high reactivity and low odor.

Specifications Of Evonik Dynasylan MTA Methyltriacetoxysilane

Chemical TypeMethyltriacetoxysilane
Product FormLiquid
AppearanceColorless to pale yellow clear liquid
Density (20 °C)1.12–1.15 g/cm³
Refractive Index (20 °C)1.410–1.420
Flash Point (PMCC)≈ 95 °C
SolubilityMiscible with common organic solvents (e.g., xylene, acetone, ethanol); hydrolyzes in water
Storage Stability≥ 12 months in sealed original container at ≤ 25 °C


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