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:
Mar. 27, 2018
Filed:
Jun. 25, 2014
Applicant:
Nantong Textile & Silk Industrial Technology Research Institute, Nantong, Jiangsu, CN;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 245/20 (2006.01); C07B 43/00 (2006.01); C09K 3/00 (2006.01);
U.S. Cl.
CPC ...
C07C 245/20 (2013.01); C07B 43/00 (2013.01); C09K 3/00 (2013.01);
Abstract
A solvent medium for diazotization reaction includes a mixed solution of polyethylene glycol and water. The molecular weight of polyethylene glycol is 200-600, and the volume ratio of polyethylene glycol and water is 1:0.4-1.5. The mixed solution also includes hydrochloric acid or sulfuric acid, and the concentration of Hin the mixed solution is 0.32-1.72 mol L.