Verfahren zur Heterogenen Depolymerisation von Organopolysiloxanen unter Fliessbedingungen

Details

Veröffentlichungs-Nr.

EP4821976

Anmeldetag

11. April 2025

Veröffentlichung

14. Oktober 2026

Rechtsraum

EP

IPC

C08J11/28

Abstract

The present invention relates to a process for depolymerization of at least one organopolysiloxane in a continuous flow reactor by passing a reaction mixture comprising at least one organopolysiloxane through a reaction chamber under continuous flow conditions, wherein said continuous flow reactor comprises∘ a reaction chamber;∘ at least one inlet for said reaction mixture at one end of said reaction chamber; and∘ at least one outlet for product material at another end of said reaction chamber;said reaction chamber defines a preferably annular flow passage for said reaction mixture and the reaction product between said inlet and said outlet, said inlet admitting introduction of said reaction mixture into said reaction chamber, said outlet admitting exhausting of reaction product from said reaction chamber,∘ optionally pumping means for operating on said reaction mixture and/or the reaction product thereof to flow said reaction mixture and/or the reaction product thereof through said reaction chamber from said at least one inlet to said at least outlet,wherein a catalyst material is provided in the reaction chamber, said catalyst material comprises fluoride and a countercation provided on a support material, wherein said countercation is physically attached to said support material through non-covalent interactions, or chemically attached to the support material through covalent bonds, and said catalyst material is provided in said reaction chamber and contacted with said reaction mixture.

Anmelder

Firma

Henkel AG & Co. KGaA

Land

🇩🇪 Deutschland

Fachgebiete