公开(公告)号：US11155676B2

公开(公告)日：2021-10-26

申请号：US16310989

申请日：2017-04-06

Applicant: SABIC Global Technologies B.V.

Inventor： Zahir Bashir ,  Hao Gu

IPC: C08G63/183 ,  B33Y70/00 ,  B33Y10/00 ,  B29C64/153 ,  B29C64/35 ,  B33Y80/00 ,  B29K67/00 ,  B29K509/02 ,  B29K509/10

Abstract: A polymer powder composition for production of shaped objects via selective laser sintering includes a thermoplastic material, which is a polyester, wherein the powder has specific particles size distribution. The thermoplastic material has: has a crystallization half time of >30 s and 50° C.; a peak melt temperature Tp,m of >200° C.; an extrapolated first heating run melt onset temperature T ei,m of >5° C. above the extrapolated first cooling run crystallization end temperature Tef,c; and a degree of crystallinity of >10.0%. The polymer composition has a continuous use temperature of >100° C., and a low change of molecular weight during exposure to selective laser sintering processing temperatures.

公开(公告)号：US10682727B2

公开(公告)日：2020-06-16

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: B32B37/00 ,  B29C45/00 ,  B23K26/00 ,  B23K26/352 ,  B23K26/324 ,  B29C45/14 ,  B32B37/15 ,  B29C65/00 ,  B29C65/82 ,  B29C65/18 ,  B32B37/18 ,  B29K105/00 ,  B32B37/20 ,  B29K705/00

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：US20200087513A1

公开(公告)日：2020-03-19

申请号：US16471865

申请日：2017-12-22

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

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

IPC: C08L79/08 ,  B29C64/153 ,  B29C64/245 ,  B29C64/264

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：US20190177473A1

公开(公告)日：2019-06-13

申请号：US16310989

申请日：2017-04-06

Applicant: SABIC Global Technologies B.V.

Inventor： Zahir Bashir ,  Hao Gu

IPC: C08G63/183 ,  B33Y70/00 ,  B29C64/153 ,  B29C64/35 ,  B33Y10/00

Abstract: The present invention relates to a polymer composition for production of shaped objects via selective laser sintering wherein the polymer composition comprises a thermoplastic material having: —a crystallisation half time of ≥30 s and ≤12 min at a supercooling of 50° C. below the peak melt temperature, wherein the crystallisation half time t1/2,c as determined via differential scanning calorimetry in accordance with ISO 11357-1 (2009); —a glass transition temperature Tg of ≥50° C. as determined in accordance with ISO 11357-2 (2013); —a peak melt temperature Tp,m of ≥200° C. as determined in accordance with ISO 11357-3 (2011), first heating nm; —an extrapolated first heating run melt onset temperature Tei,m of ≥5° C. above the extrapolated first cooling run crystallisation end temperature Tef,c as determined in accordance with ISO 11357-1 (2009), first heating and cooling run; and —a degree of crystallinity of ≥10.0% as determined according to the formula (I), wherein: —D=degree of crystallinity of the thermoplastic material (%); —ΔHf=enthalpy of fusion of the thermoplastic material as determined in accordance with ISO 11357-3 (2011); —ΔHf,100=enthalpy of fusion of the thermoplastic material in a 100% crystalline state. Such polymer composition has a continuous use temperature of ≥100° C., and a low change of molecular weight during exposure to selective laser sintering processing temperatures. D = Δ   H f Δ   H f , 100 ⋆ 100  % ( 1 )

公开(公告)号：US20180133952A1

公开(公告)日：2018-05-17

申请号：US15571567

申请日：2016-05-06

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Hao Gu ,  Thomas Hocker ,  Jan Henk Kamps ,  Dirk Noordegraaf

IPC: B29C64/112 ,  B41J2/045 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00

CPC classification number: B29C64/112 ,  B29K2069/00 ,  B29K2105/0014 ,  B29K2105/0073 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B41J2/04505 ,  B41J2/04586

Abstract: A system comprises one or more print heads (18,20,22) configured to selectively print droplets (34,36,38) of one or more polycarbonate precursor solutions comprising one or more polycarbonate precursor compounds onto one or more target locations on a substrate to form one or more reactive mixture droplets at each target location, and an environmental system configured to expose the reactive mixture droplets to reaction conditions that polymerize the one or more polycarbonate precursor compounds to form a polycarbonate. A method comprises printing droplets of one or more polycarbonate precursor solutions comprising one or more polycarbonate precursor compounds onto one or more target locations on a substrate to form a reactive mixture droplet at each target location, and exposing the reactive mixture droplets to reaction conditions to polymerize the one or more polycarbonate precursor compounds to form a polycarbonate.