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:
May. 07, 2013
Filed:
Mar. 04, 2008
Benzhong Tang, Hong Kong, CN;
Ka Wai Jim, Hong Kong, CN;
Anjun Qin, Hong Kong, CN;
Matthias Haeussler, Bad Lauchstaedt, DE;
Wing Yip Lam, Hong Kong, CN;
Benzhong Tang, Hong Kong, CN;
Ka Wai Jim, Hong Kong, CN;
Anjun Qin, Hong Kong, CN;
Matthias Haeussler, Bad Lauchstaedt, DE;
Wing Yip Lam, Hong Kong, CN;
The Hong Kong University of Science and Technology, Kowloon, Hong Kong, CN;
Abstract
The present invention provides a new metal-free cyclotrimerization reaction of alkynes to produce a 1,3,5-triacylarylene or 1,3,5-triacylbenzene. This reaction is catalyzed by secondary amines, is strictly regioselective, highly functionality-tolerant, and the resulting product can be obtained in high yields. This reaction can be further applied for the preparation of novel branched (co)polymers bearing the triacylarylenes as structural units. The preparation of the (co)polymers is carried out as a one-pot single-step reaction procedure, giving branched oligomers and polymers in high yields up to 90%. The produced (co)polymers are also processible, easily film-forming, and thermally stable.