Coreactive materials and methods for three-dimensional printing

Patent metadata

Field	Value
Publication number	US-12187904-B2
Application number	US-202418423798-A
Country	US
Kind code	B2
Filing date	Jan 26, 2024
Priority date	Nov 24, 2014
Publication date	Jan 7, 2025
Grant date	Jan 7, 2025

Abstract

Methods of printing a three-dimensional object using co-reactive components are disclosed. Thermosetting compositions for three-dimensional printing are also disclosed.

First claim

What is claimed is:

1. A composition for three-dimensional printing, comprising:
a first component comprising a first functional group; and
a second component comprising a second functional group, wherein,
the first component comprises an acrylate compound, and the second component comprises an amine-containing compound;
the first component comprises an acrylate compound, and the second component comprises a polythiol compound; or
a combination of the foregoing; and

a filler present in an amount from 1 wt. % to 40 wt. % based on a total weight of the composition.

2. The composition of claim 1 , wherein the acrylate compound comprises a methacrylate, and the amine-containing compound comprises a primary amine-containing compound.

3. The composition of claim 2 , wherein the filler comprises one or more thermal fillers.

4. The composition of claim 1 , wherein the acrylate compound comprises a silicone (meth)acrylate compound, and the polythiol compound comprises a hexanethiol.

5. The composition of claim 1 , comprising less than 5 wt. % solvent, based on the total weight of the composition.

6. The composition of claim 1 , wherein the composition is characterized by a viscosity from 5,000 cP to 5,000,000 cP, measured using a rheometer with a gap from 1 mm to 2 mm, a shear rate of 0.1 s −1 at a temperature of 25° C.

7. The composition of claim 1 , wherein an initial equivalent ratio of the first functional group to the second functional group is from 1.5:1 to 1:1.5.

8. The composition of claim 1 , wherein the composition comprises a thermosetting composition.

9. The composition of claim 1 , comprising a catalyst, wherein the catalyst catalyzes the reaction between the first functional group and the second functional group.

10. The composition of claim 1 , wherein the composition is characterized by a shear storage modulus G′ and a shear loss modulus G″, wherein,
the initial G″/G′ ratio is less than 2;
the initial G′ is greater than 1,500;
the G′ at 6 minutes is greater than 500,000 Pa; and
the G″ at 6 minutes is greater than 400,000 Pa; wherein,
the initial G″/G′ ratio and the initial G′ refer to values measured within 30 seconds after the first component and the second component are mixed;
the G′ and G″ after 6 minutes refers to the values measured 6 minutes after the first component and the second component are mixed; and
the shear storage modulus G′ and the shear loss modulus G″ are measured using a rheometer with a gap from 1 mm to 2 mm, with a 25 mm-diameter parallel plate spindle, an oscillation frequency of 1 Hz and amplitude of 0.3%, and with a rheometer plate temperature of 25° C.

11. A three-dimensional object formed using the composition of claim 1 .

12. The three-dimensional object of claim 11 , wherein the three-dimensional object comprises a plurality of layers, wherein adjacent layers forming the three-dimensional object are covalently bonded.

Assignees

• Ppg Ind Ohio Inc

Inventors

• Fenn David R
• Olson Kurt G
• Rock Reza M
• Kutchko Cynthia
• Donaldson Susan F
• Sun Hao

Classifications

• C08G18/7893

  having three nitrogen atoms in the ring · CPC title

• C08G18/3228

  acyclic · CPC title

• B29K2075/02

  Polyureas · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• C08G18/3225

  Polyamines · CPC title