-
公开(公告)号：US20180215871A1
公开(公告)日：2018-08-02
申请号：US15579345
申请日：2016-06-02
Applicant: SABIC Global Technologies B.V.
Inventor： Viswanathan Kalyanaraman , Erich Otto Teutsch , Thomas Hocker , Brian Price , Peter Zuber
IPC: C08G73/10 , B29C64/153 , C08L79/08
CPC classification number: C08G73/1025 , B29C64/153 , B29K2079/08 , C08G73/101 , C08G73/1032 , C08G73/1039 , C08G73/1046 , C08G73/106 , C08G73/1064 , C08L79/08
Abstract: A system comprises a build area, a precursor feed system to feed polyimide precursor to the build area, and a laser system comprising a laser device to emit a focused energy beam onto the build area, and a laser actuator to aim the focused energy onto selected target locations of the build area in order to selectively initiate polymerization of at least a portion of the polyimide precursor into a structure including polyimide. A method comprises feeding a polyimide precursor to a build area and selectively directing a focused energy beam to the build area to selectively initiate polymerization of at least a portion of the polyimide precursor into a structure including polyimide.
-
公开(公告)号：US20180044484A1
公开(公告)日：2018-02-15
申请号：US15552060
申请日：2016-02-19
Applicant: SABIC Global Technologies B.V.
Inventor： Viswanathan Kalyanaraman
IPC: C08J3/14
CPC classification number: C08J3/14 , C08G73/10 , C08G73/1053 , C08G73/106 , C08J2369/00 , C08J2379/08
Abstract: A method for making spherical polymer particles, the method including: providing a polymer solution including a polymer in an amount of less than 10% by weight, based on the total weight of the polymer solution, and an organic solvent; combining the polymer solution, deionized water, and a first surfactant to provide an emulsification composition having an organic solvent fraction of 0.60 or higher by volume; forming an emulsion from the emulsification composition; and adding the emulsion into receiving water maintained at a temperature above the boiling point of the organic solvent for a period sufficient to evaporate the organic solvent, wherein the adding and the evaporating are at a rate effective to form an aqueous slurry comprising spherical polymer particles having a Dv100 (volume-based diameter) of 10 micrometers or less, as measured by laser diffraction.
-
公开(公告)号：US11021573B2
公开(公告)日：2021-06-01
申请号：US16382297
申请日：2019-04-12
Applicant: SABIC GLOBAL TECHNOLOGIES B.V.
Inventor： Viswanathan Kalyanaraman
Abstract: A polyimide-forming composition includes a particulate polyimide precursor composition having an average particle size of 0.1 to 100 micrometers wherein the polyimide precursor composition comprises a substituted or unsubstituted C4-40 bisanhydride, and a substituted or unsubstituted divalent C1-20 diamine; an aqueous carrier; and a surfactant. A method of manufacturing an article including a polyimide includes the steps of forming a preform comprising the polyimide-forming composition; and heating the preform at a temperature and for a period of time effective to imidize the polyimide precursor composition and form the polyimide. An article prepared by the method, and a layer or coating including a polyimide and a surfactant are also described.
-
公开(公告)号：US10913827B2
公开(公告)日：2021-02-09
申请号：US16629115
申请日：2018-09-07
Applicant: SABIC GLOBAL TECHNOLOGIES B.V.
Inventor： Zeljko Kuzeljevic , Viswanathan Kalyanaraman , Rahul Patil , Kapil Inamdar , Zachary Anderson , William E. Hollar , Sasi Sethumadhavan Kannamkumarath
IPC: C08J3/14 , C08J3/20 , C08K5/5333 , C08K5/5399
Abstract: A process for the manufacture of polycarbonate particles is disclosed herein. The process includes combining a first solution including a polycarbonate and a phosphorus-containing flame retardant or a flame retardant polycarbonate, and an organic solvent with a second solution including a surfactant and an aqueous solvent substantially immiscible with the organic solvent, under conditions of shear and temperature effective to provide an emulsion. At least a portion of the organic solvent is removed from the emulsion to provide an aqueous slurry having a plurality of particles, wherein the particles include the polycarbonate and the phosphorus-containing flame retardant or the flame retardant polycarbonate.
-
15.发明申请公开(公告)号：US20190292319A1
公开(公告)日：2019-09-26
申请号：US16302268
申请日：2017-05-09
Applicant: SABIC GLOBAL TECHNOLOGIES B.V.
Inventor： Dadasaheb V. Patil , Viswanathan Kalyanaraman
Abstract: A copolyimide includes the reaction product of an aromatic dianhydride component including a substituted or unsubstituted pyromellitic dianhydride or a functional derivative thereof and an aromatic bis(ether phthalic anhydride) or a functional derivative thereof, and an organic diamine component comprising a substituted or unsubstituted phenylene diamine and a diaminodiphenyl sulfone. Articles and compositions including the copolyimides and methods of manufacturing a polyimide film are also described.
-
Patent Agency Ranking
公开(公告)号：US20180147773A1
公开(公告)日：2018-05-31
申请号：US15579348
申请日：2016-06-02
Applicant: SABIC Global Technologies B.V.
Inventor： Viswanathan Kalyanaraman , Erich Otto Teutsch , Thomas Hocker , Brian Price
IPC: B29C64/106 , B29C64/209 , C08G73/10 , C08L79/08 , B33Y10/00 , B33Y70/00
CPC classification number: B29C64/106 , B29C64/209 , B29K2079/08 , B33Y10/00 , B33Y70/00 , C08G73/1028 , C08G73/1032 , C08G73/1053 , C08G73/106 , C08G73/1064 , C08G73/1071 , C08L79/08
Abstract: A system comprises an extrusion head to selectively extrude a bead of a precursor solution onto a target road on a substrate within a build area, the precursor solution comprising a polyimide precursor compound in a solvent, an actuator coupled to the extrusion head to move the extrusion head, a control system coupled to the actuator to control the extrusion head along the target road and selectively dispense the precursor solution to the extrusion head, and an environmental system configured to accommodate the target road during fabrication, the environmental system configured to expose the dispensed precursor solution to a temperature selected to evaporate solvent from the solution to initiate polymerization of the polyimide precursor compound to form at least a portion of a polyimide part.
-
17.发明申请公开(公告)号：US20170362385A1
公开(公告)日：2017-12-21
申请号：US15538860
申请日：2015-12-22
Applicant: SABIC Global Technologies B.V.
Inventor： Viswanathan Kalyanaraman
IPC: C08G73/10 , C09D179/08
CPC classification number: C08G73/1032 , C09D179/08
Abstract: A polyimide-forming composition includes a polyimide prepolymer, an amine, and a solvent comprising a C1-6 alcohol. A method of manufacturing the polyimide-forming composition is disclosed. The method includes heating a substituted or unsubstituted C4-40 bisanhydride in a C1-6 alcohol to dissolve the bisanhydride, adding a substituted or unsubstituted divalent C1-20 diamine to form a polyimide prepolymer, and adding the amine in an amount effective to solubilize the polyimide prepolymer in the C1-6 alcohol, in a solution of the C1-6 alcohol and deionized water, or in deionized water. A method of manufacturing an article including a polyimide is also disclosed.
-
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：US11053358B2
公开(公告)日：2021-07-06
申请号：US15552060
申请日：2016-02-19
Applicant: SABIC Global Technologies B.V.
Inventor： Viswanathan Kalyanaraman
Abstract: A method for making spherical polymer particles, the method including: providing a polymer solution including a polymer in an amount of less than 10% by weight, based on the total weight of the polymer solution, and an organic solvent; combining the polymer solution, deionized water, and a first surfactant to provide an emulsification composition having an organic solvent fraction of 0.60 or higher by volume; forming an emulsion from the emulsification composition; and adding the emulsion into receiving water maintained at a temperature above the boiling point of the organic solvent for a period sufficient to evaporate the organic solvent, wherein the adding and the evaporating are at a rate effective to form an aqueous slurry comprising spherical polymer particles having a Dv100 (volume-based diameter) of 10 micrometers or less, as measured by laser diffraction.
-
20.发明授权公开(公告)号：US10899887B2
公开(公告)日：2021-01-26
申请号：US16302268
申请日：2017-05-09
Applicant: SABIC GLOBAL TECHNOLOGIES B.V.
Inventor： Dadasaheb V. Patil , Viswanathan Kalyanaraman
Abstract: A copolyimide includes the reaction product of an aromatic dianhydride component including a substituted or unsubstituted pyromellitic dianhydride or a functional derivative thereof and an aromatic bis(ether phthalic anhydride) or a functional derivative thereof, and an organic diamine component comprising a substituted or unsubstituted phenylene diamine and a diaminodiphenyl sulfone. Articles and compositions including the copolyimides and methods of manufacturing a polyimide film are also described.
-
-
-
-
-
-
-
-
-
Search Results
32
records
(took 0.02 seconds)
