公开(公告)号：US20220402215A1

公开(公告)日：2022-12-22

申请号：US17777546

申请日：2020-11-17

Applicant: Arkema Inc.

Inventor： David S. LIU ,  Mary K. CALVIN ,  Evan J. FISHER ,  Mark A. AUBART ,  Jing-Han WANG

IPC: B29C64/40 ,  B29C64/112 ,  C08L33/12 ,  C08L27/16 ,  C08L77/00 ,  C08G65/00

Abstract: The use of compatible, semi-miscible or miscible polymer compositions as support structures for the 3D printing of objects, including those made from polyether-block-amide copolymers such as PEBAX® block copolymers from Arkema, polyamides such as RILSAN® polyamides from Arkema, polyether ketone ketone such as KEPSTAN® PEKK from Arkema, and fluoropolymers, such a KYNAR® PVDF from Arkema, especially objects of polyvinylidene fluoride and its copolymers. One particularly useful miscible polymer is an acrylic polymer, which is miscible with the fluoropolymer in the melt. The support structure composition provides the needed adhesion to the build plate and to the printed object and support strength during the 3D printing process, yet it is removable after the fluoropolymer object has cooled. The support polymer composition is selected to be stiff and low warping, yet flexible enough to be formed into filaments.

公开(公告)号：US20240190067A1

公开(公告)日：2024-06-13

申请号：US18550803

申请日：2022-03-16

Applicant: ARKEMA INC.

Inventor： Mary K. CALVIN ,  Evan J. FISHER ,  David Shin-Ren LIU ,  Brian M. CROMER

IPC: B29C64/141 ,  B29C64/209 ,  B29C64/336 ,  B29K33/00 ,  B29K433/04 ,  B33Y70/00

CPC classification number: B29C64/141 ,  B29C64/209 ,  B29C64/336 ,  B33Y70/00 ,  B29K2033/12 ,  B29K2433/04 ,  B29K2995/0039 ,  B29K2995/0094

Abstract: The invention relates a resin composition containing a polymer matting agent, that improves the aesthetic appearance of an article formed by Material Extrusion 3D printing. The composition contains 30-99.9 wt % thermoplastic resin and 0.1-50 wt % of one or more spherical or near-spherical polymeric matting agents (PMAs) such as Altuglas Acryperl® beads from Arkema. Objects 3D printed from the composition have hidden layer lines (a.k.a. “build lines”) and is more uniform in appearance, compared to an object printed from the same thermoplastic resin without PMAs.