Patent · US Expired

Sulfonation, sulfation, and sulfamation

US6448435B1 · kind B1 · utility

8Cited by

14References

18Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Stephen Ernest Jacobson · Princeton Junction, US
David Richard Corbin · New Castle, US

Key dates

Filing date	Feb 4, 2002
Grant date	Sep 10, 2002
Priority date	—
Expiry date	Feb 4, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07B45/02
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process that can be used for sulfonating, sulfating, or sulfamating an organic compound is disclosed. The process can comprise, consist essentially of, or consist of, contacting the organic compound with sulfur trioxide under a condition sufficient to effect the sulfonation, sulfation, or sulfamation of the organic compound. The organic compound can be an aromatic compound, alcohol, carbohydrate, amine, amide, protein, or combinations of two or more thereof. The sulfur trioxide can be present in a complex comprising an inorganic support such as zeolite, silicalite, silica, titanosilicate, borosilicate, clay, aluminophosphate, and combinations of two or more thereof.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.