Uv-Härtbare Silikonzusammensetzung für Stereolithographie, Gehärtetes Produkt daraus und Härtungsverfahren

Details

Veröffentlichungs-Nr.

EP4711394

Anmeldetag

15. April 2025

Veröffentlichung

30. Oktober 2025

Rechtsraum

EP

Abstract

Provided is a UV-curable silicone composition for stereolithography, the UV-curable silicone composition containing:(A) an organopolysiloxane having, per molecule, two or more radically polymerizable group-containing groups each bonded to a silicon atom via an oxygen atom directly bonded to the silicon atom (excluding those containing a heteroatom other than an oxygen atom);(B) hydrophobic silica particles having an average particle size of 10-1,000 nm and having a hydrophobicity of 60% or more as measured by a methanol titration method; and(C) a photopolymerization initiator,wherein when the composition is irradiated with ultraviolet light having a wavelength of 405 nm at 25°C at a dose of 8,000 mJ/cm², and then cured for 24 hours in an environment of 85°C and 85% RH to obtain a cured product having a thickness of 2.0 mm, the cured product has a tensile strength of 4.5 MPa or more and an elongation at break of 300% or more.

Anmelder

Firma

SHIN-ETSU CHEMICAL CO., LTD.

Land

🇯🇵 Japan