Evonik Modifier 705
- CASE Ingredients Functions
- Chain ExtenderPlasticizer
- Chemical Family
- Siloxanes
Evonik Modifier 705 refers to SiH-terminated polydimethyl siloxanes utilized as plasticizers in addition-curing silicones. Due to their difunctional structure, these products do not crosslink but extend the chains of vinyl-terminated silicone polymers (Polymer VS). The use of these modifiers reduces crosslinking density and, consequently, the elastomer's hardness.
Product families
Applications
- Adhesives & Sealants — Other Adhesives & Sealants Applications; Industrial — Other Industrial Applications
- Construction Adhesives
- Electronics Adhesives
- Transportation Assembly
- Dental
- Other Medical Adhesives
- Batteries
- Sensors & Actuators
Product Families
- Functional Additives
- Chain Extenders & Crosslinkers
Other characteristics
- Functions
- Chain Extender, Plasticizer
- Markets
- Adhesives & Sealants
- Building & Construction
- Electrical & Electronics
- Healthcare & Pharma
- Industrial
- Storage
Dry, up to 30°C (86 °F) in sealed containers, do not permanently expose to intensive sunlight.
- PACKAGING
- 190 kg drum, 900 kg IBC PE
- Appearance
- Clear, colorless liquid
- Shelf LIfe
- 24 months
- Cure
- Chemical Cure
- Technology
- CASE Ingredients
- Packaging Type
- Drums
- Totes (IBC)
- Chemical Inventories
- DSL (Canada)
- EINECS (EU)
- ELINCS (EU)
- ENCS (Japan)
- IECSC (China)
- NZIoC (New Zealand)
- PICCS (Phillipines)
- TCCA (Korea)
- Typical Applications
Use of the modifiers allows obtaining products with a low Shore hardness, even when using low-viscosity vinyl polymers. These modifiers are therefore used in formulations that have a low viscosity prior to crosslinking and should have low Shore hardness after crosslinking. Another important modifier application is the formulation of silicone gels. When working with two-component silicone formulations, it must be ensured that Pt-catalyst (e. g. Catalyst 500 series) and modifier are kept strictly apart. Further information about the formulat
- Handling and Processing
Attention must in particular be paid to the fact that silicones containing SiH may generate hazardous hydrogen gas in connection with certain pollutants. For further information, please consult e. g. www.silicones-safety.com.The rules and regulations for the handling and use of chemicals have to be observed.
- Adhesives And Sealants
- Reactive Adhesive
Technical data
Table 1 of 1
4 rows| Characteristic | Value | Unit |
|---|---|---|
| SiH Content | 0.2 | mmol/g |
| Viscosity (at 25°C) | 500 | mPa·s |
| Refractive Index (nD²⁰) | 1.405 | — |
| Density (at 20°C) | approx. 1 | g/cm³ |
