Back-to-cyclic monomers: chemical recycling of silicone waste using a [polydentate ligand–potassium silanolate] complex

Abstract

We present a catalytic (only ppm/wt) back-to-cyclics chemical recycling strategy. Reactive distillation yields ∼99% of a pure mixture of cyclics (D 3 /D 4 /D 5 ). Catalyst recycling and repolymerization of recycled monomers further silicone circularity.