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1
US2020307076A1
POWDER-BASED ADDITIVE MANUFACTURING PROCESS
Publication/Patent Number: US2020307076A1 Publication Date: 2020-10-01 Application Number: 16/763,603 Filing Date: 2018-12-13 Inventor: Achten, Dirk   Buesgen, Thomas   Kessler, Michael   Reichert, Peter   Mettmann bettina   Assignee: Covestro Deutschland AG   IPC: B29C64/165 Abstract: The invention relates to an additive manufacturing process (3D printing) using particles having a meltable polymer. The meltable polymer comprises a thermoplastic polyurethane polymer which has a flowing temperature (intersection of E′ and E″ in the DMA) of ≥80° C. to <180° C. and a Shore A hardness according to DIN ISO 7619-1 of ≥50 Shore A and <85 Shore A and which, at a temperature T, has a melt volume rate (melt volume rate (MVR)) according to ISO 1133 of ≥5 to <15 cm3/10 min. The invention also relates to an item which can be obtained by means of the method.
2
US2020307073A1
POWDER-BASED ADDITIVE MANUFACTURING PROCESS
Publication/Patent Number: US2020307073A1 Publication Date: 2020-10-01 Application Number: 16/764,524 Filing Date: 2018-12-13 Inventor: Achten, Dirk   Buesgen, Thomas   Kessler, Michael   Reichert, Peter   Mettmann bettina   Assignee: Covestro Deutschland AG   IPC: B29C64/153 Abstract: The invention relates to an additive manufacturing process (3D printing) using particles having a meltable polymer. The meltable polymer comprises a thermoplastic polyurethane polymer which has a melting range (DSC, Differential Scanning calorimetry; second heating at heating rate 5 K/min) of 160 to 270° C. and a Shore D hardness according to DIN ISO 7619-1 of 50 or more and which, at a temperature T, has a melt volume rate (melt volume rate (MVR)) according to ISO 1133 of 5 to 15 cm/10 min and a change of the MVR, when this temperature T increases by 20° C., of greater than or equal to 90 cm3/10 min. The invention also relates to an item which can be obtained by means of the method.
3
US2020306829A1
METHOD FOR PRODUCING A TREATED, 3D PRINTED OBJECT
Publication/Patent Number: US2020306829A1 Publication Date: 2020-10-01 Application Number: 16/763,591 Filing Date: 2018-12-18 Inventor: Achten, Dirk   Buesgen, Thomas   Wagner, Roland   Kuenzel, Jonas   Kessler, Michael   Mettmann bettina   Assignee: Covestro Deutschland AG   IPC: B22F1/00 Abstract: The present invention relates to a method for producing a treated object, comprising the steps of: applying a layer of particles to a target area; applying a liquid binder to a selected portion of the layer in accordance with a cross-section of the object, so that the particles in the selected portion are bonded; repeating the steps of applying a layer of particles and applying a binder for a plurality of layers so that the bonded portions of the adjacent layers are bonded to form an object, wherein at least a part of the particles comprises a meltable polymer. A binder which cures by cross-linking is preferably selected as the binder. The obtained object is at least partially contacted with a liquid heated to ≥T or with a powder bed heated to ≥T in order to obtain the treated object. T represents a temperature of ≥25° C., the liquid does not represent a solvent or a reaction partner for the binder present in the object and the meltable polymer, and the powder bed is different from the particles of the meltable polymer. The invention also relates to a treated object that can be obtained by the method according to the invention.
4
EP3727861A1
POWDER-BASED ADDITIVE MANUFACTURING PROCESS
Publication/Patent Number: EP3727861A1 Publication Date: 2020-10-28 Application Number: 18814944.7 Filing Date: 2018-12-13 Inventor: Achten, Dirk   BÜsgen, Thomas   Kessler, Michael   Reichert, Peter   Mettmann bettina   Assignee: Covestro Deutschland AG   IPC: B33Y70/00
5
EP3727862A1
POWDER-BASED ADDITIVE MANUFACTURING PROCESS
Publication/Patent Number: EP3727862A1 Publication Date: 2020-10-28 Application Number: 18814945.4 Filing Date: 2018-12-13 Inventor: Achten, Dirk   BÜsgen, Thomas   Kessler, Michael   Reichert, Peter   Mettmann bettina   Assignee: Covestro Deutschland AG   IPC: B33Y70/00
6
EP3727801A1
METHOD FOR PRODUCING A TREATED, 3D PRINTED OBJECT
Publication/Patent Number: EP3727801A1 Publication Date: 2020-10-28 Application Number: 18816133.5 Filing Date: 2018-12-18 Inventor: Achten, Dirk   BÜsgen, Thomas   Wagner, Roland   KÜnzel, Jonas   Kessler, Michael   Mettmann bettina   Assignee: Covestro Deutschland AG   IPC: B29C64/165
7
US202047410A1
ADDITIVE PRODUCTION PROCESS USING A MIXED THERMOPLASTIC CONSTRUCTION MATERIAL
Publication/Patent Number: US202047410A1 Publication Date: 2020-02-13 Application Number: 20/181,660 Filing Date: 2018-04-23 Inventor: Reichert, Peter   Achten, Dirk   Wagner, Roland   Mettmann bettina   BÜsgen, Thomas   Kessler, Michael   Assignee: Covestro Deutschland AG   IPC: C08L75/06 Abstract: The present invention relates to a method for producing an object, comprising the step of producing the object according to an additive production process from a construction material, wherein the construction material comprises a mixture of a plurality of powdery thermoplastic materials which are different from one another due to at least one mechanical property and at least one thermoplastic material is a thermoplastic polyurethane material. The invention also relates to an object obtained according to said method.
8
US2020047410A1
ADDITIVE PRODUCTION PROCESS USING A MIXED THERMOPLASTIC CONSTRUCTION MATERIAL
Publication/Patent Number: US2020047410A1 Publication Date: 2020-02-13 Application Number: 16/605,977 Filing Date: 2018-04-23 Inventor: Achten, Dirk   BÜsgen, Thomas   Mettmann bettina   Kessler, Michael   Reichert, Peter   Wagner, Roland   Assignee: COVESTRO DEUTSCHLAND AG   IPC: B29C64/153 Abstract: The present invention relates to a method for producing an object, comprising the step of producing the object according to an additive production process from a construction material, wherein the construction material comprises a mixture of a plurality of powdery thermoplastic materials which are different from one another due to at least one mechanical property and at least one thermoplastic material is a thermoplastic polyurethane material. The invention also relates to an object obtained according to said method.
9
EP3615613A1
ADDITIVE PRODUCTION PROCESS USING A MIXED THERMOPLASTIC CONSTRUCTION MATERIAL
Publication/Patent Number: EP3615613A1 Publication Date: 2020-03-04 Application Number: 18718467.6 Filing Date: 2018-04-23 Inventor: Achten, Dirk   BÜsgen, Thomas   Mettmann bettina   Kessler, Michael   Reichert, Peter   Wagner, Roland   Assignee: Covestro Deutschland AG   IPC: C08L75/06
10
US2020055235A1
METHOD FOR PRODUCING PRODUCTS BY MEANS OF ADDITIVE MANUFACTURING METHODS USING REACTIVE POWDERS, AND PRODUCTS THEREOF
Publication/Patent Number: US2020055235A1 Publication Date: 2020-02-20 Application Number: 16/609,247 Filing Date: 2018-05-09 Inventor: Achten, Dirk   Buesgen, Thomas   Faecke, Thomas   Mettmann bettina   Buechner, Joerg   Laas, Hans-josef   Liu, Ting   Assignee: Covestro Deutschland AG   IPC: B29C64/153 Abstract: The invention relates to a method for producing a three-dimensional object by means of a powder-based additive production method from at least one first powdery material, wherein the at least one first powdery material comprises at least one first compound having a first reactive group a). The first reactive group a) is selected from the group consisting of an isocyanate group, a blocked isocyanate group, or a mixture thereof. The invention further relates to a component produced using the method according to the invention, and to powdery material that is suited for the method according to the invention.
11
EP3621812A1
METHOD FOR PRODUCING PRODUCTS BY MEANS OF ADDITIVE MANUFACTURING METHODS USING REACTIVE POWDERS, AND PRODUCTS THEREOF
Publication/Patent Number: EP3621812A1 Publication Date: 2020-03-18 Application Number: 18721403.6 Filing Date: 2018-05-09 Inventor: Achten, Dirk   BÜsgen, Thomas   FÄcke, Thomas   Mettmann bettina   BÜchner, Jörg   Laas, Hans-josef   Liu, Ting   Assignee: Covestro Deutschland AG   IPC: B33Y70/00
12
WO2019121718A1
METHOD FOR PRODUCING A TREATED, 3D PRINTED OBJECT
Publication/Patent Number: WO2019121718A1 Publication Date: 2019-06-27 Application Number: 2018085547 Filing Date: 2018-12-18 Inventor: Wagner, Roland   Kessler, Michael   Achten, Dirk   BÜsgen, Thomas   Mettmann bettina   KÜnzel, Jonas   Assignee: Covestro Deutschland AG   IPC: B29C64/165 Abstract: The present invention relates to a method for producing a treated object, comprising the steps of: applying a layer of particles to a target area; applying a liquid binder to a selected portion of the layer in accordance with a cross-section of the object, so that the particles in the selected portion are bonded; repeating the steps of applying a layer of particles and applying a binder for a plurality of layers so that the bonded portions of the adjacent layers are bonded to form an object, wherein at least a part of the particles comprises a meltable polymer. A binder which cures by cross-linking is preferably selected as the binder. The obtained object is at least partially contacted with a liquid heated to ≥ T or with a powder bed heated to ≥ T in order to obtain the treated object. T represents a temperature of ≥ 25 °C, the liquid does not represent a solvent or a reaction partner for the binder present in the object and the meltable polymer, and the powder bed is different from the particles of the meltable polymer. The invention also relates to a treated object that can be obtained by the method according to the invention.
13
EP3532272A1
METHOD FOR TREATING AT LEAST PART OF THE SURFACE OF A 3D-PRINTED OBJECT
Publication/Patent Number: EP3532272A1 Publication Date: 2019-09-04 Application Number: 17787446.8 Filing Date: 2017-10-25 Inventor: Achten, Dirk   BÜsgen, Thomas   Wagner, Roland   Mettmann bettina   Akbas, Levent   Guiu, Julien   Assignee: Covestro Deutschland AG   IPC: B29C67/00
14
WO2019121274A1
POWDER-BASED ADDITIVE MANUFACTURING PROCESS
Publication/Patent Number: WO2019121274A1 Publication Date: 2019-06-27 Application Number: 2018084659 Filing Date: 2018-12-13 Inventor: Reichert, Peter   Kessler, Michael   Achten, Dirk   BÜsgen, Thomas   Mettmann bettina   Assignee: Covestro Deutschland AG   IPC: C08L75/04 Abstract: The invention relates to an additive manufacturing process (3D printing) using particles having a meltable polymer. The meltable polymer comprises a thermoplastic polyurethane polymer which has a flowing temperature (intersection of E' and E'' in the DMA) of ≥ 80°C to < 180°C and a Shore A hardness according to DIN ISO 7619-1 of ≥ 50 Shore A and < 85 Shore A and which, at a temperature T, has a melt volume rate (melt volume rate (MVR)) according to ISO 1133 of ≥ 5 to < 15 cm3 /10 min and a change of the MVR, when this temperature T increases by 20 °C, of ≥ 90 cm3 /10 min. The invention also relates to an item which can be obtained by means of the method.
15
US10300660B2
Method of treating at least part of the surface of a 3D-printed article
Publication/Patent Number: US10300660B2 Publication Date: 2019-05-28 Application Number: 15/791,735 Filing Date: 2017-10-24 Inventor: Achten, Dirk   Büsgen, Thomas   Wagner, Roland   Mettmann bettina   Akbas, Levent   Guiu, Julien   Assignee: Covestro Deutschland AG   IPC: B29C64/118 Abstract: A method of treating at least part of a surface (110) of an article (100) in which an article (100) is treated, at least part of a surface (110, 111) of the article having been produced by an additive manufacturing method from a construction material, and the construction material provides a temperature TG′ at which the storage modulus G′ of the construction material (determined by dynamic-mechanical analysis according to ISO 6721 at a shear rate of 1/s) is 10 MPa. The article is preferably placed into an evacuable volume and the volume is evacuated. By heating and exerting pressure, the surface is plastically deformed and can be smoothed thereby.
16
WO2019121277A1
POWDER-BASED ADDITIVE MANUFACTURING PROCESS
Publication/Patent Number: WO2019121277A1 Publication Date: 2019-06-27 Application Number: 2018084662 Filing Date: 2018-12-13 Inventor: Reichert, Peter   Kessler, Michael   Achten, Dirk   BÜsgen, Thomas   Mettmann bettina   Assignee: Covestro Deutschland AG   IPC: B33Y70/00 Abstract: The invention relates to an additive manufacturing process (3D printing) using particles having a meltable polymer. The meltable polymer comprises a thermoplastic polyurethane polymer which has a melting range (DSC, Differential Scanning Calorimetry; second heating at heating rate 5 K/min) of 160 to 270 °C and a Shore D hardness according to DIN ISO 7619-1 of 50 or more and which, at a temperature T, has a melt volume rate (melt volume rate (MVR)) according to ISO 1133 of 5 to 15 cm /10 min and a change of the MVR, when this temperature T increases by 20 °C, of greater than or equal to 90 cm3 /10 min. The invention also relates to an item which can be obtained by means of the method.
17
US2019248067A1
PROCESS FOR PRODUCING 3D STRUCTURES FROM POWDERED RUBBER MATERIAL AND ITS PRODUCTS
Publication/Patent Number: US2019248067A1 Publication Date: 2019-08-15 Application Number: 16/333,276 Filing Date: 2017-09-15 Inventor: Mettmann bettina   Akbas, Levent   Wagner, Roland   Kessler, Michael   Dijkstra, Dirk   BÜsgen, Thomas   Achten, Dirk   Assignee: Covestro Deutschland AG   IPC: B29C64/245 Abstract: A process is described for producing a three dimensional structure, the process including the following steps a) applying of at least a first material M1 onto a substrate to build a first layer L1 on the substrate; b) layering of at least one further layer Ly of the first material M1 or of a further material Mx onto the first layer L1, wherein the at least one further layer Ly covers the first layer L1 and/or previous layer Ly−1 at least partially to build a precursor of the three dimensional structure; c) curing the precursor to achieve the three dimensional structure; wherein at least one of the materials M1 or Mx provides a Mooney viscosity of >10 ME at 60° C. and of <200 ME at 100° C. before curing and wherein at least one of the first material Mi or of the further material Mx is a powder. Also, a three dimensional structure is described which is available according to the process according to the invention.
18
EP3545025A1
METHOD FOR PRODUCING AN AT LEAST PARTIALLY COATED OBJECT
Publication/Patent Number: EP3545025A1 Publication Date: 2019-10-02 Application Number: 17809230.0 Filing Date: 2017-11-22 Inventor: Achten, Dirk   BÜsgen, Thomas   Michaelis, Thomas   Wagner, Roland   Mettmann bettina   Akbas, Levent   HÄttig, Jürgen   Guedou, Arnaud   Assignee: Covestro Deutschland AG   IPC: C08J7/04
19
KR20190087519A
적어도 부분적으로 코팅된 물품을 제조하는 방법
Publication/Patent Number: KR20190087519A Publication Date: 2019-07-24 Application Number: 20197017779 Filing Date: 2017-11-22 Inventor: Achten, Dirk   Akbas, Levent   Buesgen, Thomas   Haettig, Juergen   Michaelis, Thomas   Mettmann bettina   Guedou, Arnaud   Wagner, Roland   Assignee: COVESTRO DEUTSCHLAND AG   IPC: C09D175/04 Abstract: 본 발명은, 구성 물질로부터 적층 제조 방법에 의해 물품을 제조하는 단계를 포함하며, 여기서 구성 물질은 열가소성 폴리우레탄 물질을 포함하는 것인, 적어도 부분적으로 코팅된 물품을 제조하는 방법에 관한 것이다. 물품의 제조 후, 방법은 제제를 물품과 적어도 부분적으로 접촉시키는 단계를 포함하고, 제제는 수성 폴리우레탄 분산액; NCO 기를 포함하는 화합물을 또한 함유하는, OH 기를 포함하는 중합체의 수성 분산액; OH 기를 포함하는 임의의 중합체를 함유하지 않는, NCO 기를 함유하는 화합물의 수성 제제; 또는 이들 중 적어도 2종의 조합으로부터 선택된다. 본 발명은 또한, 본 발명에 따른 방법에 의해 수득된 적어도 부분적으로 코팅된 물품에 관한 것이다.
20
US2019254439A1
VISCO-ELASTIC DAMPING ELEMENT BASED ON VISCO-ELASTIC MATERIALS
Publication/Patent Number: US2019254439A1 Publication Date: 2019-08-22 Application Number: 16/346,916 Filing Date: 2017-11-02 Inventor: Wagner, Roland   Mettmann bettina   Degiorgio, Nicolas   Reichert, Peter   Dijkstra, Dirk   BÜsgen, Thomas   Achten, Dirk   Assignee: Covestro Deutschland AG   IPC: B29C64/10 Abstract: The invention relates to a method for producing a visco-elastic damping element comprising at least one visco-elastic spring element, characterized in that the visco-elastic spring element is structured from at least one visco-elastic material having a tan δ of at least 0.5, determined according to DIN 53535: 1982-03, and produced by means of a 3D printing method. The invention further relates to a visco-elastic damping element, which is produced or can be produced according to said method, and to a solid body comprising or consisting of a plurality of damping elements.