- Chemical Family:Siloxanes
- Functions:Plasticizer, Chain Extender
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.