Photochromatic composition for 3d printing

Patent metadata

Field	Value
Publication number	US-2016347995-A1
Application number	US-201514724429-A
Country	US
Kind code	A1
Filing date	May 28, 2015
Priority date	May 28, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

Compositions relating to three-dimensional (3D) printing. In particular, a photochromatic composition for use in 3D printing comprising a photochrome core with polymeric resin shell disposed thereon and a polymeric component.

First claim

What is claimed is:

1 . A photochromatic composition for three-dimensional printing, comprising:
a photochromatic component have a core-shell structure, wherein the core comprises a photochromic compound and the shell comprises a polymeric resin; and a polymeric component, wherein the photochromatic component is dispersed within the polymeric component.

2 . The photochromatic composition of claim 1 , wherein the photochromic compound is selected from the group consisting of spiropyrans, spirooxazines, diarylenes, azo compounds and mixtures thereof.

3 . The photochromatic composition of claim 1 , wherein the polymeric resin of the shell is selected from the group consisting of melamine resin, urea resin, benzoguanamine resin, glycoluril resin, and mixtures thereof.

4 . The photochromatic composition of claim 1 , wherein the polymeric component is selected from the group consisting of acrylonitrile butadiene styrene (ABS), poly-lactic acid (PLA), nylon, polyethylene terephthalate (PET), polyvinyl alcohol (PVA), high impact polystyrene (HIPS), and mixtures thereof.

5 . The photochromatic composition of claim 1 , wherein the polymeric component is selected from the group consisting of natural wood, laywood, and mixtures thereof.

6 . The photochromatic composition of claim 1 further including an acid catalyst.

7 . The photochromatic composition of claim 1 , wherein the photochromatic core comprises from about 50 to about 99.9 percent by weight of the total weight of the photochromatic component.

8 . The photochromatic composition of claim 1 , wherein the polymeric shell comprises from about 0.1 to about 50 percent by weight of the total weight of the photochromatic component.

9 . The photochromatic composition of claim 1 having a viscosity of from about 200 centipoise to about 10,000 centipoise at from about 100° C. to about 200° C.

10 . The photochromatic composition of claim 1 having a Young's Modulus of from about 0.5 to about 5 gigapascals.

11 . The photochromatic composition of claim 1 having a T g of from about 50° C. to about 200° C.

12 . A three-dimensional product comprising the photochromatic composition of claim 1 .

13 . The three-dimensional product of claim 12 , wherein exposure to ultraviolet (UV) light colors the photochromic compound in the photochromatic composition.

14 . The three-dimensional product of claim 13 , wherein exposure to visible light and/or elevated temperatures de-colors the photochromic compound in the photochromatic composition.

15 . A photochromatic composition for three-dimensional printing, comprising:
a photochromatic component have a core-shell structure, wherein the core comprises a photochromic compound and the shell comprises a polymeric resin; and a polymeric component, wherein the photochromatic component is dispersed within the polymeric component and the photochromatic composition is formed into one or more filaments.

16 . The photochromatic composition of claim 15 , wherein the photochromic compound is selected from the group consisting of spiropyrans, spirooxazines, diarylenes, azo compounds and mixtures thereof and the polymeric resin of the shell comprises melamine resin.

17 . The photochromatic composition of claim 15 , wherein the photochromatic composition is formed into a spool for use in three-dimensional printing.

18 . The photochromatic composition of claim 15 , wherein exposure to ultraviolet (UV) light colors the photochromic compound in the photochromatic composition.

19 . The photochromatic composition of claim 18 , wherein exposure to visible light and/or elevated temperatures de-colors the photochromic compound in the photochromatic composition.

20 . A method of three-dimensional printing comprising:
providing a photochromatic composition for use in three-dimensional printing comprising: a photochromatic component have a core-shell structure, wherein the core comprises a photochromic compound and the shell comprises a polymeric resin, and a polymeric component, wherein the photochromatic component is dispersed within the polymeric component; extruding the photochromatic composition to provide a filament; and supplying the filament to a heated nozzle to apply the photochromatic composition to a substrate to form three-dimensional object on the substrate.

Assignees

• Xerox Corp

Inventors

• Wu Jin

Classifications

• C09K9/02 Primary

  Organic tenebrescent materials · CPC title

• C09K2211/1029

  containing one nitrogen atom as the heteroatom · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• C09K2211/1466

  containing nitrogen as the only heteroatom · CPC title

• B33Y40/00

  Auxiliary operations or equipment, e.g. for material handling · CPC title