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:
Dec. 22, 2015
Filed:
Mar. 24, 2014
International Business Machines Corporation, Armonk, NY (US);
Agency for Science, Technology and Research, Singapore, SG;
Daniel J. Coady, San Jose, CA (US);
Amanda C. Engler, San Jose, CA (US);
Jeannette M. Garcia, San Jose, CA (US);
James L. Hedrick, Pleasanton, CA (US);
Jeremy P.K. Tan, Singapore, SG;
Yi Yan Yang, Singapore, SG;
International Business Machines Corporation, Armonk, NY (US);
Agency For Science, Technology and Research, Singapore, SG;
Abstract
Eight-membered ring cyclic carbonates comprising a ring nitrogen at position 6 (1,3,6-dioxazocan-2-ones) were prepared by reaction of precursor diols with active carbonates. The ring nitrogen is linked to a pendant group Y' via a methylene linking group. The cyclic carbonates undergo organocatalyzed ring opening polymerization to form an initial polycarbonate comprising a backbone tertiary amine group. Quaternization of the initial polycarbonates forms cationic polycarbonates comprising a positive-charged backbone quaternary nitrogen. The cationic polycarbonates can be potent antimicrobial agents.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile