| Polymer OH are polydimethyl siloxanes with terminal silanol groups used as base polymers in condensation-curing silicone elastomers. Polymer OH is available in different viscosity levels between 80 and 400 000 mPas. Other viscosities are possible upon request. Please note that Polymer OH 0,08 acts as an inhibitor and can therefore be used for delaying the curing process. Application: Polymer OH can be cured with usual condensation crosslinkers such as alkoxy silanes, acetoxy silanes (Crosslinker AC), oxime silanes (Crosslinker Ox and Crosslinker OX MOD) and enoxy silanes (Crosslinker K) in connection with catalysts (e. g. tin catalysts, Catalyst TD 18). Especially the low-viscosity types can be used as reactive diluents for the viscosity adjustment in a mixture with higher viscosity polymers. The crosslinking reaction occurs in connection with water. In conventional single-component formulations, this water can be introduced through humidity. However, Polymer OH can also be formulated as two component systems. In that case, the required water is added through the second component. Substantially higher curing rates and depths are achieved in this way. Information provided by Evonik |
