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1. WO2020222747 - THREE-DIMENSIONAL PRINTING

Publication Number WO/2020/222747
Publication Date 05.11.2020
International Application No. PCT/US2019/029672
International Filing Date 29.04.2019
IPC
B29C 64/153 2017.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
64Additive manufacturing, i.e. manufacturing of three-dimensional objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
10Processes of additive manufacturing
141using only solid materials
153using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B33Y 10/00 2015.01
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
10Processes of additive manufacturing
B33Y 30/00 2015.01
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
30Apparatus for additive manufacturing; Details thereof or accessories therefor
B33Y 70/00 2020.01
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
70Materials specially adapted for additive manufacturing
Applicants
  • HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. [US]/[US]
Inventors
  • DISCEKICI, Emre Hiro
  • WOODRUFF, Shannon Reuben
  • FLEISCHMANN, Carolin
Agents
  • COSTALES, Shruti
  • DIERKER, Julia Church
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) THREE-DIMENSIONAL PRINTING
(FR) IMPRESSION EN TROIS DIMENSIONS
Abstract
(EN)
An example of a build material composition for three-dimensional (3D) printing includes a polyamide material and an antioxidant. The antioxidant consists of an aromatic multihydrazide; or an aromatic sulfonomonohydrazide; or a hydrazide having formula (I) disclosed herein, wherein: R is null, a C1 to C12 unbranched alkyl, a C3 to C8 branched alkyl, a C2 to C8 unbranched alkylene, a C4 to C8 branched alkylene, an alicyclic compound, a polyethylene glycol, or a combination thereof; A is C=O, O=S=O, P=O, or C=S; and n is an integer ranging from 1 to 4; or formula (II) disclosed herein wherein A is C=O, O=S=O, P=O, or C=S.
(FR)
Un exemple d'une composition de matériau de construction pour l'impression en trois dimensions (3D) comprend un matériau polyamide et un antioxydant. L'antioxydant est constitué d'un multihydrazide aromatique ; ou d'un sulfonomonohydrazide aromatique ; ou d'un hydrazide de formule (I) selon la présente invention, dans laquelle : R est nul, un alkyle non ramifié en C1 à C12, un alkyle ramifié en C3 à C8, un alkylène non ramifié en C2 à C8, un alkylène ramifié en C4 à C8, un composé alicyclique, un polyéthylène glycol, ou une combinaison de ceux-ci ; A est C=O, O=S=O, P=O, ou C=S ; et n est un nombre entier allant de 1 à 4 ; ou la formule (II) selon la présente invention dans laquelle A est C=O, O=S=O, P=O, ou C=S.
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