公开(公告)号：US20230391000A1

公开(公告)日：2023-12-07

申请号：US18033151

申请日：2020-10-29

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： KRZYSZTOF NAUKA ,  ADEKUNLE OLUBUMMO ,  KYLE WYCOFF ,  EMRE HIRO DISCEKICI

IPC: B29C64/165 ,  B29C64/264

CPC classification number: B29C64/165 ,  B29C64/264 ,  B33Y70/10

Abstract: An example of a kit for three-dimensional (3D) printing includes an ultraviolet (UV) light fusing agent. The ultraviolet (UV) light fusing agent includes an aqueous vehicle and a B vitamin or a B vitamin derivative present in an amount that dissolves in the aqueous vehicle. The aqueous vehicle includes a co-solvent, a surfactant, and water. The B vitamin or the B vitamin derivative has absorption at wavelengths ranging from about 340 nm to about 415 nm.

公开(公告)号：US20240017483A1

公开(公告)日：2024-01-18

申请号：US18025618

申请日：2020-09-15

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： ADEKUNLE OLUBUMMO ,  LIHUA ZHAO ,  LAURENT HERSCHKE

IPC: B29C64/165 ,  C08F210/06 ,  B33Y10/00 ,  B33Y70/00

CPC classification number: B29C64/165 ,  C08F210/06 ,  B33Y10/00 ,  B33Y70/00 ,  B29K2023/16

Abstract: A particulate build material for three-dimensional printing can include from about 80 wt % to 100 wt % polymer particles having an average particle size from about 10 μm to about 125 μm. The polymer particles can have a polyolefin polymer backbone with from about 90 mol % to 100 mol % polypropylene polymeric units and from 0 mol % to about 10 mol % polyethylene polymeric units. The polymer particles can further include a crosslinkable component in the form of a maleic anhydride-containing side chain appended to the polyolefin polymer backbone, a thiol-containing side chain appended to the polyolefin polymer backbone, a glycidyl polyhedral oligomeric silsesquioxane compounded with the polyolefin polymer backbone, or a combination thereof.