METHOD FOR VULCANIZATION OF POLYSILOXANES WHEN PRODUCING SILICONE RUBBERS Russian patent published in 2024 - IPC C08G77/38 B01J23/745 

FIELD: vulcanization.

SUBSTANCE: methods for vulcanization of hydride-containing or vinyl- and hydride-containing poly- and/or oligosiloxanes to produce silicone rubbers of various purposes. A method has been proposed for the vulcanization of hydride-containing or vinyl- and hydride-containing poly- and/or oligosiloxanes when heated at a temperature of 60-200°C using iron(III) chloride as a catalyst with a purity of at least 97%, the concentration of which in the resulting product is 10^-2⋅ 10^-4 mol/l.

EFFECT: claimed method allows vulcanization to be carried out in a fairly wide temperature range using standard methods using a commercially available, cheap catalyst as a catalyst, which can be used as anhydrous iron(III) chloride or iron(III) chloride hexahydrate.

3 cl, 21 ex