Tag Archives: Preph.

Oxidation method for preph. of polyuron, and its use as strengthening agent in paper making

Application Number  00128607 Application Date  2000.08.16 Publication Number  1298885 Publication Date  2001.06.13 Priority Information   1999/8/17 US 09/375931; 2000/8/10 US 09/636069   International Classification  C08B31/18   Applicant(s) Name  National Starch and Chemical Investment Holding Corp.   Address     Inventor(s) Name  A.L. Chimichioglu;J.S. Tomeds   Patent Agency Code  72001 Patent Agent  wang jingchao AbstractPolysaccharide aldehydes… Read More »

Preph. of 4,4'-dinitro diphenylamine from urea and nitrobenzene

Application Number: 00104169Application Date: 2000.03.21Publication Number: 1298866Publication Date: 2001.06.13Priority Information: 1999/12/3 KR 54650/1999International: C07C209/00;C07C211/52Applicant(s) Name: Kvm-Ho Petro-Chemical Co., Ltd.Address: Inventor(s) Name: Zoo Yung-Tae;Kim Jin-Ok;Won Chung-ChoePatent Agency Code: 11038Patent Agent: gui yongliangAbstract Disclosed herein is a method for preparing 4,4'-dinitrodiphenylamine, comprising reacting urea and nitrobenzene in a polar organic solvent in the presence of a base… Read More »