Coreactive materials and methods for three-dimensional printing

Patent metadata

Field	Value
Publication number	US-11920046-B2
Application number	US-202318184138-A
Country	US
Kind code	B2
Filing date	Mar 15, 2023
Priority date	Nov 24, 2014
Publication date	Mar 5, 2024
Grant date	Mar 5, 2024

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 a polythiol and the second component comprises a polyalkenyl;
the first component comprises a polythiol and the second component comprises a polyvinyl ether;
the first component comprises a polythiol compound and the second component comprises a poly(meth)acrylate;
the first component comprises an epoxy compound and the second component comprises an amine;
the first component comprises an acrylate compound and the second component comprises an amine or a malonate; 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 filler is present in an amount from 1 wt. % to 30 wt. % based on a total weight of the composition.

3. The composition of claim 1 , wherein the filler is present in an amount from 1 wt. % to 20 wt. % based on a total weight of the composition.

4. The composition of claim 1 , wherein the filler is electrically conductive.

5. The composition of claim 1 , wherein the filler is opaque.

6. The composition of claim 1 , wherein the filler comprises a specific gravity less than 0.7.

7. The composition of claim 1 , wherein the second component comprises a silicone (meth)acrylate.

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

9. 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.

10. 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.

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

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

13. 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.

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

15. The three-dimensional object of claim 14 , 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

• C09D11/102 Primary

  containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds · CPC title

• B29C64/112 Primary

  using individual droplets, e.g. from jetting heads · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• B33Y70/00

  Materials specially adapted for additive manufacturing · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title