Color-changing particulate compositions for additive manufacturing and methods associated therewith
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United States of America Patent
Stats
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Nov 28, 2023
Grant Date -
Dec 22, 2022
app pub date -
Aug 17, 2022
filing date -
Oct 28, 2020
priority date (Note) -
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Abstract
Additive manufacturing processes, such as powder bed fusion of thermoplastic particulates, may be employed to form printed objects in a range of shapes. Formation of printed objects having various colors may sometimes be desirable. Thermoplastic particulates incorporating a color-changing material capable of forming different colors under specified activation conditions may impart different colors to a printed object. Such particulate compositions may comprise a plurality of thermoplastic particulates comprising a thermoplastic polymer and a color-changing material associated with the thermoplastic particulates, wherein the color-changing material is photochromic and thermochromic. Conjugated diynes, such as 10,12-pentacosadiynoic acid or a derivative thereof, may be particularly suitable color-changing materials having photochromic and thermochromic properties for forming a range of colors upon a printed object. Nanoparticles, particularly silica nanoparticles, associated with an outer surface of the thermoplastic particulates may enhance the brightness of the color obtained under various activation conditions and afford coloration permanence.

First Claim
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- 15 United States
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- 5 Korea
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Patent Owner(s)
Patent Owner | Address | |
---|---|---|
XEROX CORPORATION | 201 MERRITT 7 P O BOX 4505 NORWALK CT 06851 |
International Classification(s)
- C09K:MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED ....
- C08G:MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN B....
- C08F:MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONL....
- B29C:SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTAN....
- C09D:COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQ....
- C09B:ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PROD....
- B29K:INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, ....

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Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Resetco, Cristina | Toronto, CA | 12 | 18 |
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