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：US20210355294A1

公开(公告)日：2021-11-18

申请号：US16960408

申请日：2018-01-16

Applicant: Arkema Inc.

Inventor： Charles C. CRABB ,  Robert J. BARSOTTI ,  Joseph L. MITCHELL ,  Samuel SCHULTE ,  Brian M. CROMER ,  Jing-Han WANG

IPC: C08K3/04 ,  C08K3/36 ,  C08K3/22 ,  C08K7/26 ,  C08J3/205 ,  B32B27/30 ,  B32B27/20 ,  B32B27/08

Abstract: The invention relates to a thermoplastic composition used for forming articles having both high gloss and excellent resistance to mar, scratch and/or abrasion. The composition contains very high levels of nano-sized inorganic additives, such as alumina, silica and titanium dioxide. Acrylic polymer compositions, such as Arkema's PLEXIGLAS® resins, with 5 to 25 weight percent of sized fumed silica are a preferred embodiment of the invention, especially when combined with a dye or pigment.