-
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: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.
-
-