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:
Oct. 18, 1983
Filed:
Jul. 08, 1981
Roland Ohme, Berlin, DD;
Detlef Ballschuh, Berlin, DD;
Jochen Rusche, Berlin, DD;
Horst Seibt, Berlin, DD;
Kristina Geneis, Berlin, DD;
Gunter Kretzschmar, Berlin, DD;
Akademie der Wissenschaften der DDR, Berlin, DD;
Abstract
The invention relates to new sulfobetaines and a process for the manufacture of cyclic sulfobetaines of a substituted 4-sulfomethyl-pyrrolidinium betaine type. Diallylammonium combinations are converted with salts of sulfurous acid, under good mixing and mild reaction conditions, in the presence of catalytic acting transition metallic ions of the first, fifth, seventh or eighth secondary groups of the Period Table and initiators at pH 2-9. The process is technologically easily carried out, requires only little energy, while the combinations according to this invention can be selectively manufactured with a nearly quantitative yield. The fact that no carcinogenic alkylates are employed, technical chemicals and tap water may be used, and hardly any by-products are formed, may be regarded as further advantages of this process. The substances can be used for multiple purposes, for instance as conductive coating and antistatic materials. Moreover, long-chained substituted compounds have valuable surface tension qualities and an excellent cleaning power at low temperatures.