Patent Number: 6,251,302

Title: Chemically substituted chromophores and fluorophores of high solubility and their use as fluid visualizing agents

Abstract: The present invention provides, a 3 or 4-amino-1,8-naphthalimide compound having polyether substituent groups at the 3 or 4-position and the imide position. The polyether groups are linked to a hydrocarbon directly linked at the 3 or 4-amino position and the imide position. The polyether groups render the 3 or 4-amino-1,8-naphthalimide compound sufficiently soluble in a fluid such that visualization of the fluid by color or fluoresence is allowed. In one advantageous embodiment, the 3 or 4-amino-1,8-naphthalimide is obtained from the mixture of 4-chloro-1,8-naphthalic anhydride with monoamine polyether.

Inventors: Utecht; Ronald E. (Volga, SD), Lewis; David E. (Eauclaire, WI)

Assignee: MicroBioMed Corporation

International Classification: C09B 69/10 (20060101); C09B 69/00 (20060101); C10M 133/40 (); C09K 005/00 ()

Expiration Date: 06/26/2018