公开(公告)号：US11919232B2

公开(公告)日：2024-03-05

申请号：US17058280

申请日：2019-05-10

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Hao Gu ,  Richard Schouwenaar ,  Zahir Bashir ,  Lanti Yang

IPC: B29C64/153 ,  B29C64/223 ,  B29C64/245 ,  B29C64/35 ,  B33Y10/00 ,  B33Y70/10 ,  B29K67/00 ,  B29K105/00

CPC classification number: B29C64/153 ,  B29C64/223 ,  B29C64/245 ,  B29C64/35 ,  B33Y10/00 ,  B33Y70/10 ,  B29K2067/003 ,  B29K2067/006 ,  B29K2067/046 ,  B29K2105/0008 ,  B29K2105/251

Abstract: The present invention relates to a process for moulding a polymeric object, the process comprising the steps of: (a) providing a substantially flat horizontally positioned layer of a material, the layer being a film or sheet; (b) providing a layer of a thermoplastic powder onto the layer provided under (a); (c) subjecting a pre-defined part of the thermoplastic powder to irradiation to heat the pre-defined part of the thermoplastic powder to a temperature at which the thermoplastic fuses or sinters onto at least a part of the flat layer of material; (d) terminating the exposure to irradiation; (e) providing a further layer of the thermoplastic powder onto the layer provided under (b); (f) subjecting a pre-defined part of the thermoplastic powder of the layer provided under (e) to irradiation to heat the pre-defined part of the thermoplastic powder to a temperature at which the thermoplastic fuses or sinters onto at least a part of the flat layer of the material fused under (c); (g) terminating the exposure to irradiation; (h) repeating steps (e)-(g) for as many cycles as required to complete the shape of the desired polymeric object; (i) removing the fraction of thermoplastic powder that has not been fused or sintered; and (j) optionally removing the substantially flat layer as provided under (a) from the polymeric object; wherein the surface area of the substantially flat layer of material is at least 200% of the surface area of that layer produced under steps (c)-(h) having the largest surface area. Such process allows for the production of small series or uniquely designed objects at low energy consumption wherein the objects exhibit high dimensional stability.

公开(公告)号：US11186717B2

公开(公告)日：2021-11-30

申请号：US16062156

申请日：2016-12-20

Applicant: SABIC Global Technologies B.V.

Inventor： Chiel Albertus Leenders ,  Samuel Ijsselmuiden ,  Johannes Gerardus Petrus Goossens ,  Bruke Jofore ,  Hao Gu

IPC: B29C64/153 ,  C08L79/08 ,  C08L79/00 ,  C09D183/04 ,  B33Y70/00 ,  B33Y10/00 ,  B29K279/00 ,  C08K3/34 ,  C08K5/5419

Abstract: Provided are thermoplastic-nanoparticle compositions that exhibit enhanced powder and melt flow. The disclosed compositions, comprising nanoparticles being silylated, have particular application in additive manufacturing processes, such as selective laser sintering and other processes.

公开(公告)号：US11560451B2

公开(公告)日：2023-01-24

申请号：US16772353

申请日：2018-12-10

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Hao Gu ,  Zahir Bashir

IPC: C08G63/88 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/153 ,  C08K3/01 ,  C08G63/16 ,  B29K67/00

Abstract: A polymer composition for the production of shaped objects via selective sintering includes ≥70.0 wt % of poly(ethylene terephthalate), wherein ≥25.0 wt % and ≤90.0 wt % of the poly(ethylene terephthalate has resulted from a selective sintering process as unsintered material. The polymer composition is a powder having a D10 of ≥10 and ≤40 μm, a D50 of ≥75 and ≤100 μm, and a D90 of ≥160 and ≤200 μm. The polymer composition allows for the production of an article having a continuous use temperature of ≥100° C., and results in a low change of molecular weight during exposure to selective sintering powder processing temperatures. Further, the polymer composition allows for a significant reduction of the waste material generated during selective sintering as the unsintered material does not have to be disposed of as waste but may be used again.

公开(公告)号：US20220227959A1

公开(公告)日：2022-07-21

申请号：US17610301

申请日：2020-05-25

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Fayez Abdullah Alfayez ,  Toseef Ahmed ,  Zahir Bashir ,  Hao Gu ,  Saeed Al-Zahrani ,  Ahmed El Nour ,  Arfat Anis

IPC: C08K3/08 ,  C08L67/02

Abstract: The present invention relates to a material composition comprising: (i) a polyester selected from polyethylene terephthalate, polybutylene terephthalate, or mixtures thereof; and (ii) ≥1.0 and ≤30.0 vol % of aluminium particles and to a shaped object comprising a material composition comprising such material composition. Such shaped object does demonstrate the desirable mechanical impact properties, and also demonstrates the desirable electromagnetic shielding, electrical conductivity, and thermal conductivity, given its high loading of aluminium.

公开(公告)号：US20190001441A1

公开(公告)日：2019-01-03

申请号：US16062193

申请日：2016-12-15

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Hao Gu ,  Hyemin Park ,  Norio Ozawa ,  Josephus Gerardus M. van Gisbergen ,  Atsushi Ebisawa

IPC: B23K26/352 ,  B23K26/00 ,  B23K26/324 ,  B29C45/14 ,  B32B37/15 ,  B32B37/18

CPC classification number: B23K26/355 ,  B23K26/0093 ,  B23K26/324 ,  B29C45/14311 ,  B29C65/18 ,  B29C65/8215 ,  B29C65/8253 ,  B29C66/0246 ,  B29C66/1122 ,  B29C66/30325 ,  B29C66/30326 ,  B29C66/45 ,  B29C66/71 ,  B29C66/742 ,  B29C66/7422 ,  B29C66/7428 ,  B29C66/74281 ,  B29C66/74283 ,  B29C66/83221 ,  B29C66/83413 ,  B29C66/919 ,  B29C66/929 ,  B29C2791/009 ,  B29K2105/0079 ,  B29K2705/00 ,  B32B37/153 ,  B32B37/182 ,  B32B37/203 ,  B29K2055/02 ,  B29K2001/00 ,  B29K2001/12 ,  B29K2023/38 ,  B29K2023/083 ,  B29K2023/086 ,  B29K2027/12 ,  B29K2027/06 ,  B29K2059/00 ,  B29K2033/12 ,  B29K2033/20 ,  B29K2077/00 ,  B29K2079/085 ,  B29K2023/18 ,  B29K2067/006 ,  B29K2027/18 ,  B29K2067/003 ,  B29K2069/00 ,  B29K2071/00 ,  B29K2081/06 ,  B29K2079/08 ,  B29K2067/046 ,  B29K2071/12 ,  B29K2081/04 ,  B29K2023/12 ,  B29K2025/06 ,  B29K2075/00 ,  B29K2031/04 ,  B29K2027/08 ,  B29K2025/08

Abstract: Various embodiments relate to plastic-metal junctions and methods of making the same via laser-assisted joining. The present invention provides a method of forming a junction between a metal form and a solid plastic. The method can include laser treating a surface of a metal form to generate a feature (e.g., a plurality of at least one of pores and grooves) in the surface of the metal, wherein the laser has an angle of incidence with the surface of the metal of other than 0 degrees. The method can include contacting the metal surface including the feature with a flowable resin composition. The method can include curing the flowable resin composition to form the solid plastic, to provide the junction between the metal form and the solid plastic.

公开(公告)号：US20180354161A1

公开(公告)日：2018-12-13

申请号：US15579836

申请日：2016-06-09

Applicant: SABIC Global Technologies B.V.

Inventor： Hao Gu ,  Jan Willem Heuseveldt ,  Dirk Noordegraaf

IPC: B29C33/42 ,  B29C33/38 ,  B23K26/352 ,  B29C45/37

CPC classification number: B29C33/424 ,  B23K26/355 ,  B23K2103/42 ,  B29C33/3842 ,  B29C33/3878 ,  B29C37/0053 ,  B29C45/372

Abstract: Various embodiments of the present invention relate to plastic surfaces having surface structures and methods of making the same. In various embodiments, the present invention provides a method of forming surface structures on a plastic. The method can include contacting a flowable resin composition to a surface of a metal form including surface structures on the contacted surface thereof, the surface structures having at least one dimension approximately parallel to the metal surface of about 100 nm to about 1 mm, to provide a solid plastic including corresponding surface structures on a surface thereof.

公开(公告)号：US20180015670A1

公开(公告)日：2018-01-18

申请号：US15547826

申请日：2016-02-23

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Hao Gu ,  Thomas Hocker ,  Scott Davis ,  Lanti Yang

IPC: B29C41/06 ,  B29C41/50 ,  B29K69/00

CPC classification number: B29C64/255 ,  B29C41/04 ,  B29C41/06 ,  B29C41/50 ,  B29C64/153 ,  B29C64/20 ,  B29K2069/00 ,  B33Y10/00 ,  B33Y30/00

Abstract: A system for fabricating a part (12) comprises a build chamber (14), a powder feed system (18) for feeding a polymeric powder (22) to the build chamber, a heating system (40) for melting and fusing the polymeric powder to form a fused polymeric part in the build chamber, and a vacuum system (50) to apply a specified vacuum pressure to the build chamber, wherein the vacuum pressure is at or below a threshold pressure so that a porosity of the fused polymeric part is at or below a specified threshold porosity.

公开(公告)号：US11352498B2

公开(公告)日：2022-06-07

申请号：US16471865

申请日：2017-12-22

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Brian Gray Price ,  Elena Miloskovska ,  Bruke Jofore ,  Raul Fernandez Cabello ,  Hao Gu ,  Vandita Pai-Paranjape ,  Viswanathan Kalyanaraman

IPC: B29C64/264 ,  B29C64/153 ,  B29C64/245 ,  B33Y10/00 ,  B33Y70/00 ,  C08L79/08

Abstract: Provided are amorphous and at least partially crystalline polyetherimide compositions having a comparatively narrow particle size distribution and are particularly suited for additive manufacturing processes. The compositions comprise a population of polyetherimide particulates are characterized as having a zero-shear viscosity sufficiently low so as to achieve a coalescence of at least 0.5, and preferably of about 1.0, as characterized by the Frenkel model at a temperature less than 450° C.

公开(公告)号：US11230646B2

公开(公告)日：2022-01-25

申请号：US16341310

申请日：2017-10-11

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Vandita Pai-Paranjape ,  Elena Miloskovska ,  Bruke Jofore ,  Raul Fernandez Cabello ,  Hao Gu

IPC: C09D11/102 ,  B29C64/153 ,  B29K69/00 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y30/00 ,  B33Y80/00

Abstract: Provided are compositions comprising partially crystalline polycarbonate particulate having an average cross-sectional dimension of from about 1 μιη to about 200 μιτι, having from about 10% crystallinity to about 50% crystallinity, and having a weight-average molecular weight, per polystyrene standards, of from about 17,000 to about 40,000 Daltons. The composition exhibits a zero-shear viscosity of less than about 104 Pa s at the melting temperature of the partially crystalline polycarbonate. Related systems and methods for utilizing these compositions in additive manufacturing applications, including selective laser sintering (SLS) applications, are also disclosed. Also provided are additively-manufactured articles made with the disclosed compositions and according to the disclosed methods.

公开(公告)号：US20210079158A1

公开(公告)日：2021-03-18

申请号：US16772353

申请日：2018-12-10

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Hao Gu ,  Zahir Bashir

IPC: C08G63/88 ,  C08K3/01 ,  B29C64/153 ,  B33Y10/00 ,  B33Y70/00

Abstract: The present invention relates to a polymer composition for the production of shaped objects via selective sintering wherein the polymer composition comprises a thermoplastic polyester selected from poly(ethylene terephthalate), polyethylene naphthalate), poly(ethylene furanoate), poly(trimethylene terephthalate), poly(ethylene succinate), or poly(hydroxyl butyrate), wherein ≥10.0 wt % of the thermoplastic polyester has been subjected to a thermal treatment. Such polymer composition allows for the production of an article having a continuous use temperature of ≥100° C., and results in a low change of molecular weight during exposure to selective sintering powder processing temperatures. Further, such polymer composition allows for a significant reduction of the waste material generated during selective sintering as the unsintered material does not have to be disposed of as waste but may be used again fully, or blended with virgin material of the polymer composition and re-used, in a further selective sintering process.