Methods for Reactive Three-Dimensional Printing by Inkjet Printing

Patent metadata

Field	Value
Publication number	US-2017321083-A1
Application number	US-201515528462-A
Country	US
Kind code	A1
Filing date	Nov 24, 2015
Priority date	Nov 24, 2014
Publication date	Nov 9, 2017
Grant date	—

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 method of three-dimensional printing an object comprising:
depositing by inkjet printing a first reactive component comprising a first functional group; depositing by inkjet printing a second component comprising a second functional group; wherein,
the second functional group is reactive with the first functional group; and
at least one of the first functional group and the second functional group comprises a saturated functional group; and
building a three-dimensional printed object.

2 . The method 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.

3 . The method of claim 1 , wherein the at least two coreactive components comprise:
the first component comprises a polyamine and the second component comprises a polyisocyanate; the first component comprises a polyalkenyl compound and the second component comprises a polythiol; a the first component comprises a Michael addition acceptor and the second component comprises a Michael addition donor; or a combination of any of the foregoing;

4 . The method of claim 1 , wherein the composition is substantially free of solvent.

5 . The method of claim 1 , wherein depositing comprises depositing by inkjet printing the second component comprises depositing the second component overlying at least a portion of the first layer.

6 . The method of claim 1 , wherein depositing comprises simultaneously depositing the first component and the second component.

7 . The method of claim 1 , wherein depositing comprises sequentially depositing the first component and the second component.

8 . The method of claim 1 , wherein,
the first component comprises an isocyanate-functional prepolymer; and the second functional group comprises a primary amine, a secondary amine, a hydroxyl, or a combination of any of the foregoing.

9 . The method of claim 1 , wherein the composition is characterized by,
a viscosity less than 30 cP; a surface tension of 30 mN/m to 50 nM/m; a contact angle on glass of less than 20 degrees; and a contact angle on polyethylene terephthalate of less than 40 degrees.

10 . The method of claim 1 , wherein the saturated functional group comprises a hydroxyl, a thiol, a primary amine, a secondary amine, an epoxy, or a combination of any of the foregoing.

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

Assignees

• Ppg Ind Ohio Inc
• Univ Nottingham

Inventors

• Fenn David R
• Olson Kurt G
• Rock Reza M
• Hague Richard J M
• Tuck Christopher John
• Ma Le
• Wildman Ricky Darren
• He Yinfeng

Classifications

• B33Y80/00

  Products made by additive manufacturing · CPC title

• C08G18/5024

  containing primary and/or secondary amino groups · CPC title

• C08G18/3821

  Carboxylic acids; Esters thereof with monohydroxyl compounds · CPC title

• C08G18/7893

  having three nitrogen atoms in the ring · CPC title

• C09D11/38

  characterised by non-macromolecular additives other than solvents, pigments or dyes · CPC title