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:
Nov. 02, 1998
Filed:
Jan. 07, 1997
Applicant:
Inventors:
Varadaraj Elango, Charlotte, NC (US);
William R Lee, Coventry, RI (US);
Jeffrey S Hurley, Cornelius, NC (US);
Cheryl A Littau, Charlotte, NC (US);
Assignee:
Hoechst Celanese Corporation, North Somerville, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07L / ;
U.S. Cl.
CPC ...
560 14 ;
Abstract
A process for preparing bis alkylene glycol esters of an alkali metal salt of 5-sulfoisophthalic acid. The subject compound is useful in preparing modified polyesters which can be dyed with basic or cationic dyes. The process is economical and low cost since intermediate reaction products are not purified.