Dynasylan® F 8261

Dynasylan® F 8261 is a bifunctional silane possessing hydrolyzable inorganic ethoxysilyl groups and a fluoroalkyl chain. Dynasylan® F 8261 acts as a surface modifier on mostly hydroxyfunctional substrates (e.g. glass, ceramic). It can also be used as an adhesion promoter between inorganic materials and fluoropolymers (PTFE, fluorosilicones etc.). Dynasylan® F 8261 is a colorless and odorless liquid. It can be diluted to a proportion of about 25 wt.-% in ethanol and various other organic solvents, e.g. n-hexane, xylene, acetone or ethyl acetate.

Principal: Evonik Corporation Silanes

Functions: Adhesion Promoter, Adhesion Promoter, Hydrophobic Agent, Oil Repellent, Surface Modifier, Surface Modifier

Chemical Family: Silanes

End Uses: Glass, Sol-Gel Systems

Compatible Polymers & Resins: Polytetrafluoroethylene (PTFE)

Labeling Claims: Conflict Minerals-free

Features: UV Resistance, Water Resistance

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Enhanced TDS

Identification & Functionality

Blend
No
CASE Ingredients Functions
Chemical Family
Chemical Name
Function
Adhesion Promoter, Hydrophobing Agent, Oil Repellent, Surface Modifier
Industrial Additives Functions
Plastics & Elastomers Functions
Product Code
MITM04165
Single Ingredient
Yes
Synonyms
(3,3,4,4,5,5,6,6,7,7,8,8,8-Tridecafluoroctyl)triethoxysilane, 1 H ,1 H ,2 H ,2 H-Perfluorooctyltriethoxysilane, 1,1,2,2-Tetrahydroperfluorooctyltriethoxysilane, 2-Perfluorohexylethyltriethoxysilane, 3,3,4,4,5,5,6,6,7,7,8,8,8-Tridecafluorooctyltriethoxysilane, Tridecafluoro-1,1,2,2-tetrahydrooctyltriethoxysilane, Tridecafluorooctyltriethoxysilane, Triethoxy-1H,1H,2H,2H-tridecafluoro-n-octylsilane, Triethoxy-1H,1H,2H,2H-tridecafluorooctylsilane
Technologies
Product Families

Features & Benefits

CASE Ingredients Features
Labeling Claims

Applications & Uses

Application Area
Compatible Polymers & Resins
Compatible Substrates & Surfaces
Industrial Additives End Use
Markets
Applications
Processing Information
  • Surfaces must be absolutely clean and degreased before treatment!
  • E.g. the glass surface can be ideally activated with cerium oxide.
  • For example: Glass treatment (e.g. on automotive glass) The silane is typically diluted to about 1 wt.-% in a suitable solvent (e.g. isopropanol) after which 2-10 wt.-% of distilllled water and 0.2 wt.-% of hydrochloric acid (37%) are added.
  • The solution is stirred for about 5 hours and should then be used within one day. Substrate treatment can be carried out by dipping, spraying, rinsing, painting or polishing. The obtained polysiloxane film is completely invisible and will not lead to any optical impairment on the substrate.
Product Applications

Dynasylan® F 8261 can be applied in a wide variety of commercially important applications: Examples include:

  • Treatment of automotive glass ("wiperless windshield")
  • Easy-to-clean, water-repellent, UV-resistant coating of
  • float glass (constructive glazing)
  • Additive for sol-gel systems
  • Synthesis of fluorosilicones
  • Coating of pigments (e.g. in cosmetics)
  • CVD processes
  • Easy-to-clean coating on ceramics

Properties

Physical Form
Soluble In
Product Reactivity
  • In the presence of water, the ethoxy groups of Dynasylan® F 8261 hydrolyze to produce ethanol and form reactive silanol groups which can bond to a variety of inorganic substrates. The fluoroalkyl functional group provides a low energy surface. Hydrophobic and oleophobic surface properties can also be achieved by treatment with commercial fluorocarbon surfactants and resins.
  • Dynasylan® F 8261 has an distinct advantage: The formation of a Si-O-substrate bond and subsequent horizontal crosslinking, which takes place upon evaporation of the solvent. This process leads to the formation of 2- and 3-dimensional networks. Thus starting from very low concentrations Dynasylan® F 8261 is able to form chemically and mechanically stable coatings which exhibit a thickness of only a few nanometers. Suitable substrates include glass, silica, quartz powder, sand, sandstone, cristobalite, wollastonite, mica, kaolin, talc, and other silicate surfaces.

Packaging & Availability

Packaging Type

Principal Information

Group Principal Number
S000006
Principal

Storage & Handling

Storage Information

In the unopened container, the shelf life of Dynasylan® F 8261 is min. 12 months from delivery.

Other

Color (SDS)
Colorless
Item Number
Odor (SDS)
Almost odorless
Other Hazards
Hazard(s) not otherwise classified (HNOC): None
USA/DOT UN Number
Not Applicable
Chemical Properties
ValueUnitsTest Method / Conditions
pH5.5-DIN 19268 at 20°C, 1:1 in water
Shelf Life & Stability
ValueUnitsTest Method / Conditions
Shelf Life12.0 momo
Physical Properties
ValueUnitsTest Method / Conditions
Boiling Point220.0 °C°CDIN 51751 at 101.3kPa
Density1.334 g/cm³g/cm³DIN 51757 at 20°C
Flash Point108.0 °C°CDIN EN ISO 2719
Melting Pointmax. -38.0 °C°CDIN ISO 3841
Viscosity3.5 mPa.smPa.sDIN 53015 at 20°C
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Boiling Point (SDS)220.0 °C°CDIN 51751 at 101.3kPa
Density (SDS)1.334 g/cm³g/cm³at 20°C
Flash Point (SDS)108.0 °C°CEN ISO 2719
Flash Point (SDS)108.0 °C°CPensky-Martens Closed Cup (PMCC)
Freeze Point (SDS)max. -38.0 °C°C
Partition coefficient n-octanol/water (SDS)7.2-QSAR, n- octanol/water
Self Ignition Temperature (SDS)245.0 °C°CEC Method A15
Solubility In Water (SDS)max. 10.0 mg/Lmg/LSlow decomposition by hydrolysis
Vapor Pressure (SDS)4.0 PaPaat 20°C, Pure Substance
Vapor Pressure (SDS)300.0 PaPaEC Method A4 at 20°C
Vapor Pressure (SDS)4.0 PaPaEC Method A4 at 20°C, pure substance
Viscosity (SDS)3.5 mPa.smPa.sDIN 53015 at 20°C
pH (SDS)5.5-at 20°C, 1000 g/L