Addition Cure Silicone Rubber Formulation Guide

  Vinyl Silicone Fluids Inhibitor (Vinyl Chainstoppers)
  Vinyl Silicone Resins Modifier / Hydride Chain Extenders
  Hydride Crosslinkers Reinforcer: Hydrophilic Fumed Silica
  Adhesion Promoters Silazanes
  Platium Catalyst Water Scavengers

Inhibitor (Vinyl Chainstoppers)

  When formulating 2-part-systems, it is recommended to have part 1 consisting of Vinyl fluid and catalyst, and part 2 of Vinyl fluid and crosslinker, respectively. By this, a mixing ratio of 1:1 can be adjusted easily.

Due to the high reactivity of the platinum catalyst, the pot life of the catalyzed mixture is only a few minutes but may be considerably extended by addition of an inhibiting additive, like:

SiSiB® PC9401, CAS. 2627-95-4.
SiSiB® PC9110, CAS 2554-06-5, ViD4.


SiSiB® PC9110, 2,4,6,8-TETRAMETHYL-2,4,6,8-TETRAVINYL-CYCLOTETRASILOXANE

SiSiB® PC9401, CAS 2627-95-4, 1,1,3,3-TETRAMETHYL-1,3-DIVINYLDISILOXANE