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.:

US 4504668 B1

Date of Patent:

Mar. 12, 1985

Filed:

Mar. 11, 1981

Process for the preparation of n-sulfoalkyl quaternary salts of nitrogen

Applicant:

Inventors:

Helmut Kampfer, Cologne, DE;

Marie Hase, Bergisch Gladbach, DE;

Max Glass, Cologne, DE;

Assignee:

Agfa-Gevaert Aktiengesellschaft, Leverkusen, DE;

Attorney:

Connolly and Hutz

Primary Examiner:

Glennon H Hollrah

Assistant Examiner:

David B Springer

Int. Cl.

CPC ...

C07D / ; C07D / ; C07D / ; C07D / ;

U.S. Cl.

CPC ...

548120 ; 548127 ; 548150 ; 548179 ; 548217 ; 548325 ; 548327 ; 548565 ; 2602 / ;

Abstract

Tertiary amines may be quaternized by heating them with a sulfoalkylating agent of this invention to a temperature of from 100.degree. to 250.degree. C. The sulfoalkylating agents which are believed to be hydroxy alkane sulfonic acid sulfoalkyl esters are free from sultone and are prepared by heating a hydroxy alkane sulfonic acid of propane or butane or the corresponding sultone to a temperature in the region of from 80.degree. to 180.degree. C. in the presence of water in an amount of 1 to 4 moles per mole of hydroxy alkane sulfonic acid or alkane sultone.

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