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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12371574 B1

PDFFull Text
Date of Patent:
Jul. 29, 2025

Filed:

Aug. 11, 2023

Flame resistant compositions for additive manufacturing and associated printed 3d articles comprising intumescent additives

Applicant:

3d Systems, Inc., Rock Hill, SC (US);

Inventor:

Meisam Shir Mohammadi, Rock Hill, SC (US);

Assignee:

3D Systems, Inc., Rock Hill, SC (US);

Attorneys:

Maynard Nexsen PC

John P. Zimmer

Primary Examiner:

James Sanders

Int. Cl.
CPC ...
C09D 5/18 (2006.01); B33Y 70/00 (2020.01); C09D 5/03 (2006.01); C09D 7/40 (2018.01); C09D 7/61 (2018.01); C09D 7/63 (2018.01); C09D 177/02 (2006.01); C09D 177/04 (2006.01); C09K 21/02 (2006.01); C09K 21/12 (2006.01); B29C 64/153 (2017.01); B29K 77/00 (2006.01); B29K 105/00 (2006.01); B33Y 10/00 (2015.01); C08K 5/5313 (2006.01); C08K 7/24 (2006.01);
U.S. Cl.
CPC ...
C09D 5/185 (2013.01); B33Y 70/00 (2014.12); C09D 5/031 (2013.01); C09D 5/033 (2013.01); C09D 7/61 (2018.01); C09D 7/63 (2018.01); C09D 7/69 (2018.01); C09D 177/02 (2013.01); C09D 177/04 (2013.01); C09K 21/02 (2013.01); C09K 21/12 (2013.01); B29C 64/153 (2017.08); B29K 2077/00 (2013.01); B29K 2105/251 (2013.01); B33Y 10/00 (2014.12); C08K 5/5313 (2013.01); C08K 7/24 (2013.01); C08K 2201/005 (2013.01);
Abstract

Compositions for additive manufacturing applications are described herein which, in some embodiments, impart flame resistant and/or flame retardant properties to articles printed or formed from the compositions. The compositions may also impart desirable mechanical properties to the articles. In some embodiments, a composition comprises a sinterable powder or a thermoplastic polymer in an amount of 10-99 wt. %, based on the total weight of the composition, and an intumescent additive in an amount of up to 30 wt. %, based on the total weight of the composition. The intumescent additive comprises a phosphinate component and at least one of (a) a heptazine or melamine-derived component, and (b) a proton donor component.

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