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:
Oct. 06, 2026
Filed:
Jul. 13, 2021
Evonik Operations Gmbh, Essen, DE;
Evonik Operations GmbH, Essen, DE;
Abstract
Polyether ether ketone copolymers can have the following formula (I), Therein, Arcontains 75 to 98 mol %, preferably 78 to 97 mol %, of 1,4-phenylene groups and 2 to 25 mol %, preferably 3 to 22 mol %, of X,Y-naphthylene groups. In the X,Y-naphthylene groups, X≠Y, X and Y independently of one another are an integer value of 1 to 10, and 2,7-naphthylene groups are excluded. The mol % values relate to the amount of substance of Ar, wherein all Argroups sum to 100 mol %. The constituent Arcontains 2,2'-bisphenylmethanone groups, 2,4′-bisphenylmethanone groups, 3,3′-bisphenylmethanone group, 4,4′-bisphenylmethanone groups, or mixtures thereof, preferably 4,4′-bisphenylmethanone groups. The index n is 10 to 10,000. The copolymers have a reduced melting point and are suitable for producing three-dimensional objects in powder bed fusion processes.