Elastomeric ionomers for additive manufacturing

Patent metadata

Field	Value
Publication number	US-11299560-B2
Application number	US-202016781643-A
Country	US
Kind code	B2
Filing date	Feb 4, 2020
Priority date	Feb 4, 2019
Publication date	Apr 12, 2022
Grant date	Apr 12, 2022

Abstract

Disclosed is a method of: providing a solution having a solvent, a polybutadiene, and an acrylate; and functionalizing the polybutadiene with the diacrylate to produce an ionic polymer. The polymer may be useful as an additive manufacturing binder.

First claim

What is claimed is:

1. A method comprising:
providing a solution comprising a solvent, a polybutadiene, and an acrylate;
wherein the acrylate and the polybutadiene are dissolved in the solvent; and

functionalizing the polybutadiene with the acrylate to produce a polymer;
wherein the acrylate comprises ionic groups or groups capable of hydrogen bonding to each other;
wherein the polymer comprises the ionic groups or the groups capable of hydrogen bonding to each other.

2. The method of claim 1 , wherein the solvent comprises chloroform and ethanol.

3. The method of claim 1 , wherein the acrylate is zinc acrylate, magnesium acrylate, or hydroxyethylacrylate.

4. The method of claim 1 , further comprising:
evaporating the solvent.

5. The polymer made by the method of claim 1 .

6. The polymer of claim 5 , wherein the polymer contains an average of more than zero and up to 3 functional groups per polymer chain.

7. A method comprising:
combining the polymer of claim 5 with a crosslinker to produce a printing composition;
extruding the printing composition to form a shaped article; and
crosslinking the polymer with the crosslinker.

8. The method of claim 1 , wherein the functionalization occurs by reaction of a double bond of the acrylate with a double bond of the polybutadiene.

Assignees

• Us Gov Sec Navy

Inventors

• Casalini Riccardo
• Hemmer James
• Mason Brian

Classifications

• C08C19/28

  Reaction with compounds containing carbon-to-carbon unsaturated bonds (graft polymers C08F279/00) · CPC title

• B33Y70/00 Primary

  Materials specially adapted for additive manufacturing · CPC title

• C08C19/36

  with carboxy radicals · CPC title

• C08C19/42 Primary

  reacting with metals or metal-containing groups · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title