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:
Feb. 26, 2019
Filed:
Aug. 31, 2018
Lotte Chemical Corporation, Seoul, KR;
Byung Hun Chae, Daejeon, KR;
Sung Won Jung, Anyang-si, KR;
Jung Yeop Lee, Daejeon, KR;
Hyun Yul Woo, Daejeon, KR;
Youn Jin Hong, Daejeon, KR;
LOTTE CHEMICAL CORPORATION, Seoul, KR;
Abstract
A method of three-dimensional (3D) printing, the method including: heating a composition comprising a polymer base including atactic polypropylene having a weight average molecular weight of 50,000 to 1,000,000, a density of 0.8 to 0.9 g/ml, and isotacticity (Pentad I.I, mmmm) of 5 to 20%, wherein a melting index (210° C., 2.16 kg) of the polymer base is 0.5-30 g/10 minutes; extruding the composition as a filament; and applying the extruded filament in one or more layers, wherein a solidification rate (measuring melting indexes (MI, 150° C., 10 kg)) of the filament is less than or equal to 2 g/10 minutes and a melting rate (measuring melting indexes (MI, 180° C., 10 kg)) of the filament is greater than or equal to 10 g/10 minutes, and hardness of the polymer base is less than or equal to Shore A 90.