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1. 发明申请

WO2019126602A2 METHOD OF 3D PRINTING, AND RESULTING ARTICLE HAVING POROUS STRUCTURE 审中-公开
公开(公告)号：WO2019126602A2
公开(公告)日：2019-06-27
申请号：PCT/US2018/066990
申请日：2018-12-21
申请人： BRASKEM AMERICA, INC.
发明人： BERNARDI, Alessandro , DIAS, Peter , MANO, Barbara, Iria , SOARES, Juliana, Breda
IPC分类号： C08L23/12
摘要： A composition for three-dimension (3D) printing, a method for 3D printing, and a resulting article having porous structure are provided. Such a composition includes from 50% to 100%o by weight of a base polymer comprising polyolefm (such as ultra-high molecular weight polyethylene), from 0% to 50% by weight of a glue polymer (such as HDPE or PP), and optionally additive. A composition can be applied in a layer, and the base polymer and the glue polymer each has a predetermined size or size distribution. The composition is sintered in a selected area to form a layer of a solid article, which has a predetermined pore size or pore size distribution. The predetermined particle size or size distribution for each of the base polymer and the glue polymer is determined through computer simulation based on the predetermined pore size or pore size distribution in the layer of the solid article.

2. 发明申请

WO2020139824A1 POLYOLEFIN POWDER FOR SELECTIVE LASER SINTERING 审中-公开
公开(公告)号：WO2020139824A1
公开(公告)日：2020-07-02
申请号：PCT/US2019/068304
申请日：2019-12-23
申请人： BRASKEM AMERICA, INC.
发明人： DA LUZ, Alexandre , BERNARDI, Alessandro , FARAH, Marcelo
IPC分类号： C08L23/12
摘要： A polyolefin powder including a polyolefin polymer is provided. The polyolefin can be polypropylene, polyethylene, propylene copolymers, or ethylene copolymers, including, for example, ethylene vinyl acetate, and combinations thereof. The polyolefin can have bimodal, multimodal, or broad molecular weight distribution. The polyolefin powder need not be milled, and the particles in the polyolefin powder can be a spherical, semi-spherical, potato-type, or an irregular shape. The polyolefin powder can have porous particles. A three dimensional (3D) part made from the polyolefin powder is also provided. The part can be produced by selective laser sintering or selective laser melting.

3. 发明申请

WO2019126602A9 METHOD OF 3D PRINTING, AND RESULTING ARTICLE HAVING POROUS STRUCTURE 审中-公开
公开(公告)号：WO2019126602A9
公开(公告)日：2019-06-27
申请号：PCT/US2018/066990
申请日：2018-12-21
申请人： BRASKEM AMERICA, INC.
发明人： BERNARDI, Alessandro , DIAS, Peter , MANO, Barbara, Iria , SOARES, Juliana, Breda
IPC分类号： B33Y10/00 , B29C64/153 , B22F3/10 , C09J123/04 , C09J123/08 , C08L23/04
摘要： A composition for three-dimension (3D) printing, a method for 3D printing, and a resulting article having porous structure are provided. Such a composition includes from 50% to 100%o by weight of a base polymer comprising polyolefm (such as ultra-high molecular weight polyethylene), from 0% to 50% by weight of a glue polymer (such as HDPE or PP), and optionally additive. A composition can be applied in a layer, and the base polymer and the glue polymer each has a predetermined size or size distribution. The composition is sintered in a selected area to form a layer of a solid article, which has a predetermined pore size or pore size distribution. The predetermined particle size or size distribution for each of the base polymer and the glue polymer is determined through computer simulation based on the predetermined pore size or pore size distribution in the layer of the solid article.

4. 发明申请

WO2019133518A1 METHOD OF ADDITIVE MANUFACTURING USING HIGH PERFORMANCE POLYOLEFINS 审中-公开
公开(公告)号：WO2019133518A1
公开(公告)日：2019-07-04
申请号：PCT/US2018/067257
申请日：2018-12-21
申请人： BRASKEM AMERICA, INC.
发明人： BERNARDI, Alessandro , DA LUZ, Alexandre Di Pintor , DE AZEREDO, Ana, Paula , ITO, Leonardo, Batista , SOARES, Juliana, Breda , SING, Michelle, K.
IPC分类号： B29C64/106 , B33Y10/00 , B33Y70/00 , B33Y80/00 , B29K23/00
CPC分类号： B29C64/106 , B29K2023/00 , B33Y10/00 , B33Y70/00 , B33Y80/00
摘要： A method of manufacturing an article using an additive manufacturing technique may include melting a polymer composition; activating the polymer composition with one or more activating agents; and depositing the molten polymer composition to manufacture the article. An article may include a plurality of printed layers of a poiyolefin composition, wherein the poiyolefin composition is prepared from the deposition of an activated poiyolefin composition, wherein the poiyolefin composition is activated by one or more activating agents.

5. 发明申请

WO2020132425A1 PROCESSING AID FOR HIGH SPEED SINTERING, METHODS THEREOF, AND ARTICLES THEREFROM 审中-公开
公开(公告)号：WO2020132425A1
公开(公告)日：2020-06-25
申请号：PCT/US2019/067826
申请日：2019-12-20
申请人： BRASKEM AMERICA, INC.
发明人： BERNARDI, Alessandro , SIMANKE, Adriane Gomes
IPC分类号： B29C64/165 , B33Y70/00
摘要： A method for manufacturing an article using an additive manufacturing technique may include irradiating a layer of polymer powder, a radiation absorption material, and a processing aid with infrared light to sinter the polymer powder together. An article may include a plurality of printed layers, the plurality of printed layers comprising a polymer, a radiation absorption material, and a processing aid. The disclosure is also directed to a thermosensive ink and a modified polymer powder.

6. 发明申请

WO2016089969A2 CONTINUOUS METHOD AND SYSTEM FOR THE PRODUCTION OF AT LEAST ONE POLYMERIC YARN AND POLYMERIC YARN 审中-公开
标题翻译：用于生产最少一个聚合物纱和聚合物纱的连续方法和系统
公开(公告)号：WO2016089969A2
公开(公告)日：2016-06-09
申请号：PCT/US2015/063383
申请日：2015-12-02
申请人： BRASKEM AMERICA, INC.
发明人： BUENO, Marcos Roberto, Paulino , BERNARDI, Alessandro , WESTFAHL, Harry
IPC分类号： D01D5/088
CPC分类号： D01F6/04 , D01D1/02 , D01D10/06
摘要： The present invention provides a continuous method for the production of at least one polymeric yarn comprising the steps of: mixing a polymer with a first solvent generating a mixture; homogenizing the mixture; rendering the mixture inert; dosing the mixture to an extruder; immersing the mixture in a quenching bath (30), wherein an air gap is maintained before the mixture achieves the surface of the liquid of the quenching bath (30) forming at least one polymeric yarn; drawing at least once the at least one polymeric yarn; washing the polymeric yarn with a second solvent that is more volatile than the first solvent; heating the at least one polymeric yarn; drawing at room temperature, at least once, the at least one polymeric yarn; and heat drawing, at least once, the at least one polymeric yarn, wherein the mixture comprises: a polymer comprising ultra-high molecular weight polyethylene, comprising an intrinsic viscosity of from 5 dL/g to 40 dL/g, and a polydispersity index of from 2 to 10; and a first solvent capable of dissolving the polymer under the process conditions, and comprising a dynamic viscosity, measured at a temperature of 37.8 °C, according to ASTM D-445, greater than 10 cP. The present invention further provides a continuous system for the production of at least one polymeric yarn, comprising: means for mixing the polymer with a first solvent generating a mixture; means for homogenizing the mixture; means for rendering the mixture inert; means for dosing the mixture to an extruder; means for immersing the mixture in a quenching bath (30), wherein an air gap is maintained before the mixture achieves the surface of the liquid of the quenching bath (30) forming at least one polymeric yarn; means for drawing at least once the at least one polymeric yarn; means for washing for washing the at least one polymeric yarn with a second solvent that is more volatile than the first solvent; means for heating the at least one polymeric yarn; means for drawing at room temperature at least once the at least one polymeric yarn; and means for heat drawing at least once the at least one polymeric yarn, wherein the mixture comprises: a polymer comprising ultra-high molecular weight polyethylene, comprising an intrinsic viscosity of from 5dL/g to 40dL/g, and a polydispersity index of from 2 to 10; and a first solvent capable of dissolving the polymer under the process conditions and comprising a dynamic viscosity, as measured at a temperature of 37.8 °C according to the ASTM standard D-445, greater than 10 cP. Further, the present invention provides a polymeric yarn made according to the above stated method.
摘要翻译：本发明提供用于生产至少一种聚合纱线的连续方法，包括以下步骤：将聚合物与产生混合物的第一溶剂混合; 使混合物均化; 使混合物呈惰性; 将混合物加入挤出机中; 将混合物浸入淬火浴（30）中，其中在混合物达到形成至少一种聚合纱线的骤冷槽（30）的液体表面之前保持气隙; 至少抽出一次所述至少一种聚合纱线; 用比第一溶剂挥发性更高的第二溶剂洗涤聚合物纱线; 加热所述至少一种聚合纱线; 在室温下至少一次拉伸至少一根聚合纱线; 和至少一次所述至少一种聚合纱线的热拉伸，其中所述混合物包括：包含超高分子量聚乙烯的聚合物，其特性粘度为5dL / g至40dL / g，多分散指数从2到10; 和能够在工艺条件下溶解聚合物的第一种溶剂，并且包含根据ASTM D-445测定的在37.8℃的温度下的动态粘度，大于10cP。本发明还提供了用于生产至少一种聚合纱线的连续系统，包括：用于将聚合物与产生混合物的第一溶剂混合的装置; 使混合物均匀化的方法; 使混合物呈惰性的方法; 用于将混合物计量给挤出机的装置; 用于将混合物浸入淬火浴（30）中的装置，其中在混合物达到形成至少一种聚合纱线的淬火槽（30）的液体表面之前保持气隙; 用于至少抽出一次所述至少一种聚合纱线的装置; 用于用比第一溶剂挥发性更高的第二溶剂洗涤至少一种聚合物纱线的洗涤装置; 用于加热所述至少一种聚合纱线的装置; 至少一种聚合纱线在室温下至少拉伸一次的装置; 以及用于至少一次所述至少一种聚合纱线进行热拉伸的装置，其中所述混合物包括：包含超高分子量聚乙烯的聚合物，其特征粘度为5dL / g至40dL / g，多分散指数为 2至10; 以及能够在工艺条件下溶解聚合物并且包含动态粘度的第一溶剂，其在37.8℃的温度下根据ASTM标准D-445测量，大于10cP。此外，本发明提供了根据上述方法制备的聚合纱线。

7. 发明申请

WO2020118038A1 COUPLING AGENT MODIFIED POLYOLEFINS TO MAXIMIZE SINTERING AND PART PERFORMANCE IN 3D PRINTING, METHODS THEREOF, AND ARTICLES FORMED THEREFROM 审中-公开
公开(公告)号：WO2020118038A1
公开(公告)日：2020-06-11
申请号：PCT/US2019/064656
申请日：2019-12-05
申请人： BRASKEM AMERICA, INC.
发明人： BERNARDI, Alessandro , DA LUZ, Alexandre, Di Pintor , DE AZEREDO, Ana, Paula
IPC分类号： C09D123/08 , C09D123/12 , C09D5/00
摘要： Methods of manufacturing an article that include depositing a polyolefin composition at a target surface, wherein the polyolefin composition includes a polyolefin and a coupling agent; and melting and sintering the polyolefin composition with radiation from a radiation source at an intensity to produce the article, wherein the intensity initiates a reaction between the polyolefin and the coupling agent. Articles may include a sintered polyolefin composition, wherein the sintered polyolefin composition is prepared from the reaction of a polyolefin with a coupling agent in the presence of a radiation source.

8. 发明申请

WO2019126602A3 METHOD OF 3D PRINTING, AND RESULTING ARTICLE HAVING POROUS STRUCTURE 审中-公开
公开(公告)号：WO2019126602A3
公开(公告)日：2019-06-27
申请号：PCT/US2018/066990
申请日：2018-12-21
申请人： BRASKEM AMERICA, INC.
发明人： BERNARDI, Alessandro , DIAS, Peter , MANO, Barbara, Iria , SOARES, Juliana, Breda
IPC分类号： B33Y10/00 , B29C64/153 , B22F3/10 , C09J123/04 , C09J123/08 , C08L23/04
摘要： A composition for three-dimension (3D) printing, a method for 3D printing, and a resulting article having porous structure are provided. Such a composition includes from 50% to 100%o by weight of a base polymer comprising polyolefm (such as ultra-high molecular weight polyethylene), from 0% to 50% by weight of a glue polymer (such as HDPE or PP), and optionally additive. A composition can be applied in a layer, and the base polymer and the glue polymer each has a predetermined size or size distribution. The composition is sintered in a selected area to form a layer of a solid article, which has a predetermined pore size or pore size distribution. The predetermined particle size or size distribution for each of the base polymer and the glue polymer is determined through computer simulation based on the predetermined pore size or pore size distribution in the layer of the solid article.

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