Enhanced TDS
Identification & Functionality
- Base Chemicals Functions
- Blend
- No
- CASE Ingredients Functions
- Chemical Family
- Chemical Name
- Function
- Moisture Scavenger, Adhesion Promoter, Crosslinking Agent, Coupling Agent, Surface Modifier, Co-Monomer
- Plastics & Elastomers Functions
- Product Code
- MITM04137
- Single Ingredient
- Yes
- Technologies
- Product Families
Features & Benefits
- CASE Ingredients Features
- Labeling Claims
- Materials Features
Applications & Uses
- Applicable Processes
- Coating End Applications
- Compatible Polymers & Resins
- Compatible Substrates & Surfaces
- Industrial Additives End Use
- Plastics & Elastomers End Uses
- Plastics & Elastomers Processing Methods
- Markets
- Applications
- Product Applications
- Moisture curing of polymers:
- Dynasylan® VTMO is suitable for the preparation of moisture- curing polymers, e.g. polyethylene.
- The characteristic feature of this process is peroxide-initiated 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 a 80-100 °C waterbath, steambath, or even at ambient conditions), the polymer chains are linked together; 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® VTMO may also be used as a co-monomer 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® VTMO acts as an efficient adhesion
- promoter for various mineral-filled polymers, improving mechanical and electrical properties especially after exposure to moisture.
- Once bonded to an inorganic filler, Dynasylan® VTMO hydrophobates the filler surface, improving the compatibility of fillers with polymers, leading to a better dispersibility, reduced melt viscosity and easier processing of filled plastics.
- The pretreatment of glass, metals, or ceramic surfaces with Dynasylan® VTMO improves the adhesion of coatings on these surfaces and can thus improve the corrosion resistance.
- Dynasylan® VTMO as co-monomer for polymer dispersions
- Polymer dispersions (e.g. styrene acrylics), modified with Dynasylan® VTMO show improved adhesion strenght in wet conditions and wet scrub resistance.
- Dynasylan® VTMO as moisture scavenger
- Dynasylan® VTMO reacts rapidly with water. Even traces of water can be removed with Dynasylan® VTMO.
- This effect is used widely in sealants.
- Other applications of Dynasylan® VTMO:
- Dynasylan® VTMO can easily bond to OH-groups. Hydroxyl containing polymers e.g. functionalized silicones, may be modified with Dynasylan® VTMO, thereby introducing reactive
- vinyl groups into the polymer chains.
- The vinyl group of Dynasylan® VTMO is activated by its proximity to silicon, which makes it an attractive molecule for different organic syntheses.
- Moisture curing of polymers:
Properties
- Product Reactivity
- In the presence of moisture the methoxy (Si-OCH₃) groups of Dynasylan® VTMO hydrolyze to produce methanol and reactive silanol (Si-OH) groups which can bond to a variety of inorganic substrates or react with each other to form siloxane bonds (Si- O-Si).
- The organophilic vinyl end of Dynasylan® VTMO can also react with a suitable polymer initiated by a peroxide.
Regulatory & Compliance
- Certifications & Compliance
- Chemical Inventories
Packaging & Availability
- Packaging Type
- Product Packaging
- Dynasylan® VTMO is supplied in 25 kg or 195 kg drums or 900 kg containers.
Storage & Handling
- Storage Conditions
- The containers must remain tightly sealed during storage and kept in a cool, well aired place.
- The product should be protected against humidity.
- In the unopened container the shelf life of Dynasylan® VTMO is min. 12 months from delivery.
Other
- Appearance
- Colorless low viscosity liquid
- Boiling Point
- 123.0 °C
- Boiling Point (SDS)
- 123.0 °C
- Color (SDS)
- Colorless
- Decomposition Temperature (SDS)
- min. 253.0 °F
- Density
- 0.97 g/cm³
- Density (SDS)
- 0.97 g/cm³
- Flash Point
- 25.0 °C
- Flash Point (SDS)
- 25.0 °C
- Freeze Point (SDS)
- -143.0 °F
- IATA/ICAO Emergency Response Guide
- 3L
- 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
- Ignition Temperature (SDS)
- 235.0 °C
- Immiscible In (SDS)
- Water
- Item Number
- Lower Explosive Limit (SDS)
- 1.4 %(V/V)
- Odor
- Typical aromatic odor
- Odor (SDS)
- Fruity
- Other Hazards
- None.
- Partition coefficient n-octanol/water (SDS)
- 1.1-2.0
- Principal
- Refractive Index
- 1.39
- Self Ignition Temperature (SDS)
- 435.0 °F
- Shelf Life
- 12.0 mo
- 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)
- 23.94 %(V/V)
- Vapor Pressure (SDS)
- 88.0 hPa
- Vapor Pressure (SDS)
- 12.0 hPa
- Viscosity
- 1.0 mPa.s
- Viscosity (SDS)
- 1.0 mPa.s
- Optical Properties
Value Units Test Method / Conditions Refractive Index 1.39 - DIN 51423 nD20 - Shelf Life & Stability
Value Units Test Method / Conditions Shelf Life 12.0 mo mo - Physical Properties
Value Units Test Method / Conditions Boiling Point 123.0 °C °C DIN 51751 at 1013 hPa Density 0.97 g/cm³ g/cm³ DIN 51757 At 20°C Flash Point 25.0 °C °C DIN 51755 Viscosity 1.0 mPa.s mPa.s DIN 53015 At 20°C - SDS Physical and Chemical Properties
Value Units Test Method / Conditions Boiling Point (SDS) 123.0 °C °C DIN 51751 at 1013 hPa Decomposition Temperature (SDS) min. 253.0 °F °F Density (SDS) 0.97 g/cm³ g/cm³ DIN 51757 at 20°C Flash Point (SDS) 25.0 °C °C DIN EN ISO 13736 Freeze Point (SDS) -143.0 °F °F Ignition Temperature (SDS) 235.0 °C °C DIN 51794 Lower Explosive Limit (SDS) 1.4 %(V/V) %(V/V) Partition coefficient n-octanol/water (SDS) 1.1-2.0 - hydrolysis product, n- octanol/water Self Ignition Temperature (SDS) 435.0 °F °F Upper Explosion Limit (SDS) 23.94 %(V/V) %(V/V) Vapor Pressure (SDS) 88.0 hPa hPa At 50°C Vapor Pressure (SDS) 12.0 hPa hPa at 20°C Viscosity (SDS) 1.0 mPa.s mPa.s DIN 53015 at 20°C