Support material for energy-pulse-induced transfer printing

Patent metadata

Field	Value
Publication number	US-12064899-B2
Application number	US-202318306415-A
Country	US
Kind code	B2
Filing date	Apr 25, 2023
Priority date	Nov 29, 2018
Publication date	Aug 20, 2024
Grant date	Aug 20, 2024

Abstract

A material for use as support material for energy-pulse-induced transfer printing, which contains (a) at least one energy transformation component, (b) at least one volume expansion component and (c) at least one binder and which has a viscosity at 25° C. of from 0.2 Pas to 1000 Pas and a surface tension at 25° C. of from 20 to 150 mN/m. The invention furthermore relates to a process for producing three-dimensional objects using the support material.

First claim

The invention claimed is:

1. A system for application of a support material by energy-pulse-induced transfer printing (LIFT) comprising
a support material, and
a carrier for the support material,
wherein the support material comprises
0.05 to 30 wt.-% of at least one energy transformation component (a), which comprises an inorganic or organic dye or a pigment,
5 to 60 wt.-% of at least one volume expansion component (b), which comprises a substance with a boiling point of from 95 to 200° C.,
35 to 94.95 wt.-% of at least one binder (c), which comprises a polymer, wax and/or a non-ionic surfactant, wherein the polymer, wax and/or non-ionic surfactant is solid at <40° C.,
in each case relative to the total mass of the material, and
wherein the material has a viscosity at 25° C. of from 0.2 Pas to 1000 Pas and a surface tension at 25° C. of from 20 to 150 mN/m.

2. The system according to claim 1 , wherein the support material comprises
0.05 to 20 wt.-% of at least one energy transformation component (a),
8 to 50 wt.-% of at least one volume expansion component (b),
40 to 90 wt.-% or 49 to 90 wt.-% of at least one binder (c),
in each case relative to the total mass of the material.

3. The system of claim 1 , further comprising a construction material.

4. The system according to claim 3 , wherein the construction material comprises a ceramic particle suspension in water, a solvent or a combination thereof.

5. The system according to claim 4 , wherein the suspension comprises of from 68 to 88 wt.-% of zirconium oxide, based on the total mass of the suspension.

6. The system according to claim 4 , wherein the liquid medium of the suspension comprises not more than 5 wt.-% of organic components, relative to the quantity of solid in the suspension.

7. The system of claim 3 , wherein the construction material comprises
(α) at least one polymerizable binder,
(β) at least one volume expansion component,
(γ) at least one initiator for the polymerization, and
(δ) at least one energy transformation component.

8. The system according to claim 7 , wherein the energy transformation component (δ) comprises at least one inorganic or organic dye or pigment.

9. The system according to claim 7 , wherein the construction material comprises
(α) at least one radically polymerizable binder,
(β) at least one volume expansion component,
(γ) at least one initiator for the polymerization comprising an initiator for the radical polymerization, and
(δ) at least one energy transformation component.

10. The system according to claim 9 , wherein the at least one polymerizable binder (α) comprises at least one mono- or multifunctional (meth)acrylate or a mixture thereof.

11. The system according to claim 9 , wherein the volume expansion component (β) comprises at least one mono(meth)acrylate with a boiling point of less than 200° C. at standard pressure.

12. The system according to claim 9 , wherein the initiator for the polymerization (γ) comprises a photoinitiator for the radical polymerization.

Assignees

• Ivoclar Vivadent Ag
• Io Tech Group Ltd

Inventors

• Bonderer Lorenz Josef
• Laubersheimer Jürgen Rudolf
• Wachter Wolfgang Josef
• Zenou Michael

Classifications

• C08L91/06

  Waxes · CPC title

• C08L71/02

  Polyalkylene oxides · CPC title

• C08K5/3465 Primary

  condensed with carbocyclic rings · CPC title

• B29K2509/02

  Ceramics · CPC title

• B28B11/243

  Setting, e.g. drying, dehydrating or firing ceramic articles (B28B11/242 takes precedence) · CPC title