US2016075644A1PendingUtilityA1

5-Sulfoisophthalic Acid Salts

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Assignee: FUTUREFUEL CHEMICAL COPriority: Aug 29, 2011Filed: Nov 20, 2015Published: Mar 17, 2016
Est. expiryAug 29, 2031(~5.1 yrs left)· nominal 20-yr term from priority
Inventors:Timothy A. Oster
C07C 303/22C07C 309/58
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Claims

Abstract

This invention relates to methods for the production of sodium, potassium, rubidium, cesium, magnesium, manganese, cobalt, nickel, aluminum, copper (II) and zinc salts of 5-sulfoisophthalic acid. In addition, this disclosure describes new compositions of matter, specifically, the rubidium, manganese, cobalt, nickel, and copper (II) salts of 5-sulfoisophthalic acid. The method utilizes the addition of metal salts to a crude sulfonation solution of 5-sulfoisophthalic acid.

Claims

exact text as granted — not AI-modified
1 . A cobalt salt of 5-sulfoisophthalic acid. 
     
     
         2 . A copper (II) salt of 5-sulfoisophthalic acid. 
     
     
         3 . A rubidium salt of 5-sulfoisophthalic acid. 
     
     
         4 . A metal salt of 5-sulfoisophthalic acid, wherein said metal is selected from the group consisting of manganese, nickel, and aluminum.

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