Enhanced TDS
Identification & Functionality
- Blend
- No
- CASE Ingredients Functions
- Chemical Family
- Chemical Name
- Function
- Adhesion Promoter, Co-Monomer, Coupling Agent, Crosslinking Agent, Moisture Scavenger, Surface Modifier
- Plastics & Elastomers Functions
- Product Code
- MITM04190
- Single Ingredient
- Yes
- Synonyms
- Vinyl(triethoxy)silane
- Technologies
- Product Families
Features & Benefits
- CASE Ingredients Features
- Labeling Claims
- Materials Features
Applications & Uses
- Compatible Polymers & Resins
- Compatible Substrates & Surfaces
- Markets
- Applications
- Product Applications
- Moisture curing of polymers:
- Dynasylan® VTEO is suitable for the preparation of moisture- curing polymers, e.g. polethylene.
- The characteristic feature of this process is peroxideinitiated grafting of the vinylsilane to the polymer during extrusion.
- After grafting, the polymer can still be processed as a thermoplast.
- Only upon treatment with moisture (in an 80 - 100°C waterbath, steambath, or even at ambient conditions), are the polymer chains linked together via the formation of siloxane bonds, thereby forming a crosslinked polymer.
- This reaction can be accelerated by using a catalyst.
- Silane crosslinked polyethylene is widely used as cable isolation, and sheathing mainly in low voltage applications as well as for hot water/sanitary pipes and underfloor heating.
- Heat resistance is the main reason for the crosslinking of polymers for cable applications, but crosslinking can also improve the following properties: tear and crack resistance, chemical resistance, abrasion resistance, memory effect.
- Dynasylan® VTEO may also be used as a comonomer for the preparation of different polymers such as polyethylene or acrylics.
- Those polymers show an improved adhesion to inorganic surfaces and they can also be crosslinked with moisture as described above.
- Adhesion promotion and surface modification:
- Because of its ability to react with inorganic fillers as well as with organic polymers (activated by e.g. peroxides or radiation), Dynasylan® VTEO acts as an adhesion promoter for various mineralfilled polymers, improving mechanical and electrical properties especially after exposure to moisture.
- Once bonded to an inorganic filler, Dynasylan® VTEO hydrophobizes the filler surface, improving the compatibility of fillers with polymers, leading to a better dispersibility, reduced melt viscosity and easier processing of filled plastics.
- Surface coating of glass, metal or ceramics with Dynasylan® VTEO will improve not just adhesion, especially of acrylic systems, but also corrosion or scratch resistance. 3. Dynasylan® VTEO as comonomer for polymer dispersions
- Polymer dispersions (e.g. styrene acrylics), modified with Dynasylan® VTEO show improved adhesion strenght in wet conditions and wet scrub resistance.
- Dynasylan® VTEO as moisture scavenger:
- Dynasylan® VTEO reacts rapidly with water.
- Even traces of water can be removed with Dynasylan® VTEO.
- This effect is used widely in sealants.
- Other applications of Dynasylan® VTEO:
- Dynasylan® VTEO can easily bond to OH groups.
- Hydroxyl containing polymers e.g. functionalized silicones, may be modified with Dynasylan® VTEO, thereby introducing reactive vinyl groups into the polymer chains.
- The vinyl group of Dynasylan® VTEO is activated by its proximity to silicon, which makes it an attractive molecule for different organic syntheses.
- Moisture curing of polymers:
Properties
- Physical Form
- Product Reactivity
- In the presentce of moisture the ethoxy (SiOCH₂CH₅) groups of Dynasylan® VTEO hydrolyze to produce ethanol and reactive silanol (SiOH) groups which can bond to a variety of inorganic substrates or react with each other to form siloxane bonds (Si-OSi).
- The organophilic vinyl end of Dynasylan® VTEO can also react with a suitable polymer initiated by a peroxide.
Regulatory & Compliance
Packaging & Availability
Storage & Handling
- Storage Conditions
- In the unopened container the shelf life of Dynasylan® VTEO is at least one year.
Other
- Appearance
- Colorless low viscosity liquid
- Boiling Point
- 158.0 °C
- Boiling Point (SDS)
- 161.0 °C
- Color (SDS)
- Colorless
- Density
- 0.9 g/cm³
- Density (SDS)
- 0.91 g/cm³
- Flash Point
- 38.0 °C
- Flash Point (SDS)
- 46.0 °C
- Freeze Point (SDS)
- -93.0 °C
- IATA/ICAO Proper Shipping Name
- Flammable liquid, N.O.S.
- IATA/ICAO UN Number
- UN 1993
- IMO/IMDG EmS Fire
- F - E
- IMO/IMDG EmS Spill
- S - E
- IMO/IMDG Proper Shipping Name
- Flammable liquid, N.O.S.
- IMO/IMDG UN Number
- UN 1993
- Immiscible In (SDS)
- Water
- Item Number
- Lower Explosive Limit (SDS)
- 0.53 %(V/V)
- Odor
- Typical aromatic odor
- Odor (SDS)
- Fruity
- Principal
- Refractive Index
- 1.397
- Shelf Life
- 1.0 yr
- USA/DOT Emergency Response Guide Number
- 128
- USA/DOT Proper Shipping Name
- Flammable liquids, N.O.S.
- USA/DOT UN Number
- UN 1993
- Upper Explosion Limit (SDS)
- 15.0 %(V/V)
- Vapor Pressure (SDS)
- 147.0 Pa
- Vapor Pressure (SDS)
- 1140.0 Pa
- Viscosity
- 0.7 mPa.s
- Viscosity (SDS)
- 0.7 mPa.s
- Optical Properties
Value Units Test Method / Conditions Refractive Index 1.397 - DIN 51423 nD20 - Shelf Life & Stability
Value Units Test Method / Conditions Shelf Life 1.0 yr yr - Physical Properties
Value Units Test Method / Conditions Boiling Point 158.0 °C °C DIN 51751 at 1013 hPa Density 0.9 g/cm³ g/cm³ DIN 51757 At 20°C Flash Point 38.0 °C °C DIN 51755 Viscosity 0.7 mPa.s mPa.s DIN 53015 At 20°C - SDS Physical and Chemical Properties
Value Units Test Method / Conditions Boiling Point (SDS) 161.0 °C °C At 1013 Hpa Density (SDS) 0.91 g/cm³ g/cm³ DIN 51757 at 20⁰C Flash Point (SDS) 46.0 °C °C Freeze Point (SDS) -93.0 °C °C Lower Explosive Limit (SDS) 0.53 %(V/V) %(V/V) DIN 51649 Upper Explosion Limit (SDS) 15.0 %(V/V) %(V/V) DIN 51649 Vapor Pressure (SDS) 147.0 Pa Pa At 68°F Vapor Pressure (SDS) 1140.0 Pa Pa At 122°F Viscosity (SDS) 0.7 mPa.s mPa.s DIN 53015 at 20°C