System, Verfahren, Kit und Formulierungen zum Drucken Elastischer Dreidimensionaler Objekte mit Wärmehärtenden Polyurethanmaterialien mit Hoher Elastizitätsverlustbeständigkeit

Details

Veröffentlichungs-Nr.

EP4603255

Aktenzeichen

EP24157485

Anmeldetag

13. Februar 2024

Veröffentlichung

20. August 2025

Rechtsraum

EP

IPC

B29C48/00B29C48/29B29C64/00B29C64/106C08G18/32C08G18/38C08G18/42C08G18/44C08G18/76

Abstract

Systems, methods, kits of parts, and extrudable partially-reacted co-reactive compositions are disclosed for making thermoset polyurethane parts made via three-dimensional printing. The reactive components used to make the polyurethane thermoset include a first reactive component comprising at least one polyisocyanate prepolymer, a second reactive component comprising at least one polyol prepolymer, and a third reactive component comprising at least one polyol compound, wherein the at least one polyol compound has, per molecule, less than two urethane groups and (a) at least one ester group and at least three hydroxy groups per molecule or (b) at least one carbonate group and at least two hydroxy groups per molecule. This combination of reactive components improves resistance to loss of elasticity due to compression set and/or hydrolysis or exposure to chemicals, solvents or heat.

Anmelder

Firma

Chromatic 3D Materials Inc.

Land

🇺🇸 USA

Fachgebiete