The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 12, 2022
Filed:
Dec. 12, 2018
Covestro Deutschland Ag, Leverkusen, DE;
Dirk Achten, Leverkusen, DE;
Thomas Buesgen, Leverkusen, DE;
Roland Wagner, Leverkusen, DE;
Florian Stempfle, Cologne, DE;
Christoph Tomczyk, Leverkusen, DE;
Covestro Deutschland AG, Leverkusen, DE;
Abstract
An additive manufacturing method wherein the carrier () is within a vessel (), the vessel contains the free-radically crosslinkable resin () and a liquid () which is immiscible with the free-radically cross-linkable resin () and has a higher density than the free-radically crosslinkable resin (), such that the free-radically crosslinkable resin () floats on top of the liquid () and, prior to each step II), the distance between the carrier () and the free-radically crosslinkable resin () is altered such that a layer of the free-radically crosslinkable resin forms above the uppermost surface (), viewed in vertical direction, of the previously deposited layer of the construction material () and at least partially forms contact with this uppermost surface () of the previously deposited layer of the construction material (). The free-radically crosslinkable resin () comprises a urethane (meth)acrylate. The invention further relates to the use of a free-radically crosslinkable resin comprising a urethane (meth)acrylate as construction material in a two-phase 3D printing method.