# US 11,999,101 B2 · Plastic-based materials for processing by means of additive manufacturing

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- Number: US 11,999,101 B2
- Document ID: US11999101B2
- Status: Granted
- Kind: B2
- Application number: 16/305,543
- Filed: 2017-05-23
- Published: 2021-07-22
- Granted: 2024-06-04
- Earliest claimed: 2016-06-02
- Assignees: Siemens Mobility GmbH
- Applicants: Siemens Mobility GmbH
- Inventors: Manfred Ochsenkühn; Heinrich Zeininger; Maximilian Kunkel
- Web page: https://patentgrep.com/patent/US11999101B2

## CPC

- B29C 64/153: using layers of powder being selectively joined, e.g. by selective laser sintering or melting
- B33Y 10/00: Processes of additive manufacturing
- B33Y 70/00: Materials specially adapted for additive manufacturing
- B33Y 70/10: Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
- C08L 79/08: Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08L 81/04: Polysulfides
- C08G 73/1046: {Polyimides containing oxygen in the form of ether bonds in the main chain}
- C08L 2201/02: Flame or fire retardant/resistant
- C08L 2207/04: Thermoplastic elastomer
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

## Abstract

Various embodiments may include a powder for processing in an SLS method comprising a blend of a first material and a second material. The first material comprises at least one of an amorphous high temperature-resistant thermoplastic or a liquid-crystalline polymer and the second material comprises a semicrystalline material. The blend exhibits a crystallization melting point.

## Claims

### Claim 1

A powder for processing in an SLS method, the powder comprising:
a blend of a first material and a second material;
wherein the first material comprises at least one material selected from the group consisting of:
a polyethersulfone, a polyphenylsulfone, a polyether ether ketone, and a polyphenylene sulfide; and
the second material comprises a semicrystalline material;
wherein the blend exhibits a crystallization melting point and a glass transition temperature of the first material and a crystallite melting point of the second material are no more than 25° C. apart.

### Claim 2 (depends on 1)

The powder as claimed in claim 1, wherein—the first material is blended with the second material in a ratio falling between of 0.5 parts of the first material: 1.5 parts of the second material to 1.5 parts of the first material: 0.5 parts of the second material.

### Claim 3 (depends on 1)

The powder as claimed in claim 1, wherein:
the second material comprises PPS.

### Claim 4 (depends on 1)

The powder as claimed in claim 1, wherein:
the second material comprises PPS; and
the first material and the second material are present in a ratio of 0.8:1.2.

### Claim 5

A powder for processing in an SLS method, the powder comprising:
a blend of a first material and a second material;
wherein the first material comprises at least one material selected from the group consisting of: a polyethersulfone, a polyphenylsulfone, a polyether ether ketone, and a polyphenylene sulfide; and
the second material comprises a semicrystalline material;
wherein the blend exhibits a crystallization melting point;
the first material further comprises at least one of a semicrystalline polyamide, a polyaryletherketone, or an urethane-based polymer; and
the second material further comprises an amorphous intrinsically flame retardant polymer.

### Claim 6 (depends on 5)

The powder as claimed in claim 5, wherein—the first material is blended with the second material in a ratio falling between of 0.5 parts of the first material: 1.5 parts of the second material to 1.5 parts of the first material: 0.5 parts of the second material.

### Claim 7 (depends on 1)

The powder as claimed in claim 1, wherein the second material comprises PPS.

### Claim 8 (depends on 1)

The powder as claimed in claim 1, wherein:
the second material comprises PPS; and
the first material and the second material are present in a ratio of 0.8:1.2.