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. 17, 2023
Filed:
Jan. 09, 2018
Basf SE, Ludwigshafen am Rhein, DE;
Kolon Plastics Inc., Gwacheon-Si, KR;
Thomas Heitz, Ludwigshafen am Rhein, DE;
Minlu Zhang, Ludwigshafen am Rhein, DE;
Achim Stammer, Ludwigshafen am Rhein, DE;
JongMoon Kim, Gimcheon, KR;
In-Gi Cho, Gimcheon, KR;
Jin-Sang Choi, Gimcheon, KR;
Abstract
A process for making an oxymethylene polymer comprising polymerizing at least one compound capable of forming —CHO— repeat units (monomer) in the presence of at least one ester of the general formula I (ester): R—CO—O—R(I) wherein Rcan be hydrogen, wherein Rand Rare independently of each other linear or branched Cto Calkyl Cto Ccycloalkyl —[R-0-]Rwherein Ris a linear or branched Cto Calkylen and Ris a linear of branched Cto Calkyl and n is an integer of from 1 to 5. and in the presence of at least one Lewis acid.