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EP-4735502-A1 - SOLUBLE MATERIALS PRODUCED BY CO-REACTIVE EXTRUSION

EP4735502A1EP 4735502 A1EP4735502 A1EP 4735502A1EP-4735502-A1

Abstract

A coreactive additive manufacturing composition comprising a first coreactive composition, the first coreactive composition comprising a first reactive compound and a second reactive compound. The first and second reactive compound are reactable and curable with one another under ambient conditions to form a first reaction product comprising a solid composition soluble in a solvent.

Inventors

  • BOYLE, Bret Michael
  • TEMSICK, Elizabeth Marie
  • CANCINO, Christian
  • ACCETTULLA, Connor Andrew
  • THOMPSON, Zachary Phillip

Assignees

  • PPG Industries Ohio, Inc.

Dates

Publication Date
20260506
Application Date
20240417

Claims (20)

  1. 1. A core active additive manufacturing composition comprising: a first coreactive composition comprising a Michael donor-containing compound and a Michael acceptor-containing compound, the Michael donorcontaining compound and the Michael acceptor-containing compound reactable and curable with one another under ambient conditions to form a first reaction product comprising a solid composition soluble in a solvent.
  2. 2. The composition of claim 1, further comprising a second coreactive composition, the second coreactive composition comprising a first reactive compound and a second reactive compound, the first and second reactive compound reactable and curable with one another under ambient conditions to form a second reaction product comprising a thermoset insoluble in a solvent.
  3. 3. The composition of claim 2, wherein the second reaction product has a water solubility of 0.04 g/L to 0 g/L at 25 °C.
  4. 4. The composition of any one of claims 2-3 wherein the first reactive compound comprises an epoxy-containing compound and the second reactive compound comprises a thiol-containing compound.
  5. 5. The composition of any one of claims 1-4, wherein a surface of an article formed of the second reaction product has a water contact angle equal to or greater than 90°, as measured at 22 °C and 22% humidity with a Kruss Tension K100 Water Contact Angle Goniometer and SFE model according to ASTM D5946.
  6. 6. The composition of any one of claims 1-5, wherein the first reaction product has a water solubility of 0.05 g/L to 80 g/L at 25 °C.
  7. 7. The composition of any one of claims 1-6, wherein a surface of an article formed of the first reaction product has a water contact angle between 75° and 50°, as measured at 22 °C and 22% humidity with a Kruss Tension K100 Water Contact Angle Goniometer and SFE model according to ASTM D5946.
  8. 8. The composition of any one of claims 1-7, wherein the solvent comprises an aqueous solution.
  9. 9. The composition of any one of claims 1-8, wherein the Michael donor-containing compound comprises an amine-containing compound and the Michael acceptor-containing compound comprises an acrylate-containing compound.
  10. 10. The composition of claim 9, wherein the amine-containing compound comprises an ethanolamine resin.
  11. 11. The composition of either claim 9 or claim 10, wherein the acrylate-containing compound comprises a glycol-containing acrylate resin.
  12. 12. The composition of claim 11, wherein the glycol-containing acrylate resin comprises from 10 wt. % to 50 wt. % of the total weight of the first coreactive composition.
  13. 13. The composition of either claim 11 or claim 12, wherein the glycol-containing acrylate resin comprises from 20 wt. % to 30 wt. % of the total weight of the first coreactive composition.
  14. 14. The composition of any one of claims 11-13, wherein the glycol-containing acrylate resin comprises from 20 wt. % to 75 wt. % of the total weight of the Michael acceptorcontaining compound.
  15. 15. The composition any one of claims 11-14, wherein the glycol-containing acrylate resin comprises from 40 wt. % to 50 wt. % of the total weight of the Michael acceptorcontaining compound.
  16. 16. The composition of any one of claims 1-15, wherein the first coreactive composition comprises at least one of a multifunctional acrylate resin, a multifunctional amine resin, and combinations of thereof.
  17. 17. An additively manufactured article comprising: a first coreactive composition comprising a first reactive component and a second reactive component, the first reactive component and the second reactive component reactable and curable with one another under ambient conditions to form a first reaction product comprising a solid composition soluble in a solvent; and a second coreactive composition comprising a third reactive component and a fourth reactive component, the third reactive component and the fourth reactive component reactable and curable with one another under ambient conditions to form a second reaction product comprising a thermoset insoluble in a solvent, wherein the first reaction product comprises a soluble support material, and the second reaction product comprises an insoluble build material.
  18. 18. The article of claim 17, wherein the first reactive component comprises an amine - containing compound, the second reactive component comprises an acrylate-containing compound; and wherein the first reaction product of the first and second reactive components comprises an Aza-Michael addition-based support material.
  19. 19. The article of either claim 17 or claim 18, wherein the third reactive component comprises a polyisocyanate-containing compound and the fourth reactive component comprises an amine-containing compound; and wherein the second product of the third and fourth reactive components comprises a polyurea-based build material.
  20. 20. The article of any one of claims 17-19, wherein the first reactive component comprises a multifunctional amine and a glycol-containing amine.

Description

SOLUBLE MATERIALS PRODUCED BY CO-REACTIVE EXTRUSION CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit under 35 U.S.C. § 119(e) of U.S. Provisional Application No. 63/511,517 entitled “SOLUBLE MATERIALS PRODUCED BY CO-REACTIVE EXTRUSION”, filed on June 30, 2023 which is incorporated by reference in its entirety. GOVERNMENT LICENSE RIGHTS [0002] This invention was made with government support under Government Contract No. W91 INF-17-2-0227 awarded by the U.S. Army Contracting Command on behalf of the U.S. Army Research Laboratory (ARL). The government may have certain rights in the invention. FIELD [0003] The present disclosure relates to a solvent soluble solid composition for three- dimensional printing. BACKGROUND [0004] Three-dimensional (3D) printing is a process that is used to create objects out of cured compositions, such as plastics. The cured composition can be made of a thermoset composition. During the printing of the object using a thermoset composition, at least two coreactive components are mixed together to create a coreactive composition. The thermoset composition may be used in ambient reaction extrusion (ARE) printing, in which the coreactive composition is deposited onto a printing platform using an additive manufacturing device and cured at ambient conditions. [0005] When printing a 3D object onto a print bed, portions of the object may need to be supported during the curing process. Additive manufacturing devices may print support structures made of a thermoset composition to support portions of the 3D object to ensure that printed material used to build the object does not sag or droop while the printed material dries. Once the 3D object with support structures is printed in completion, the support structures may be removed, leaving just the intended object. SUMMARY [0006] The present disclosure provides a coreactive additive manufacturing composition comprising: a first coreactive composition comprising a Michael donorcontaining compound and a Michael acceptor-containing compound. The Michael donorcontaining compound and the Michael acceptor-containing compound are reactable and curable with one another under ambient conditions to form a first reaction product comprising a solid composition soluble in a solvent. [0007] The present disclosure further provides an additively manufactured article comprising: a first coreactive composition comprising a first reactive component and a second reactive component and a second coreactive composition comprising a third reactive component and a fourth reactive component. The first reactive component and the second reactive component are reactable and curable with one another under ambient conditions to form a first reaction product comprising a solid composition soluble in a solvent. The third reactive component and the fourth reactive component are reactable and curable with one another under ambient conditions to form a second reaction product comprising a thermoset insoluble in a solvent. The first reaction product comprises a soluble support material, and the second reaction product comprises an insoluble build material. [0008] The present disclosure further provides a method of additively manufacturing an article comprising: depositing a support material comprising a first coreactive composition soluble in an aqueous solution, depositing a build material comprising a second coreactive composition insoluble in an aqueous solution, and curing each of the support material and the build material at room temperature to create a cured support material and a cured build material. The first coreactive composition comprises a first coreactive component and a second coreactive component. The first coreactive component and the second coreactive component react with each other to form the support material. The second coreactive composition comprises a third coreactive component and a fourth coreactive component. The third coreactive component and the fourth coreactive component react with each other to form the build material. The support material and the build material are deposited such that the support material and the build material are in contact with each other. BRIEF DESCRIPTION OF THE DRAWINGS [0009] The above-mentioned and other features and advantages of this disclosure, and the manner of attaining them, will become more apparent and the disclosure itself will be better understood by reference to the following description taken in conjunction with the accompanying drawings. These above-mentioned and other features of the disclosure may be used in any combination or permutation. [0010] FIG. 1A is an illustration of a 3D printed object with a structure comprising a build material composition of the present disclosure and support structures comprising a dissolvable support structure composition of the present disclosure; [0011] FIG. IB is an illustration of the 3D printed object of FIG. 1 A after dissolving the