N-alkyl-lactams as crystallization inhibitors

US5369118A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Karl Reizlein · Cologne, DE
• Ulrich Engelhardt · Leverkusen, DE
• Heinz-Otto Horstmann · Bensberg, DE
• Rolf-Jurgen Singer · Wuppertal, DE
• Klaus Wangermann · Krefeld, DE
• Wolfgang Wirth · Bensberg, DE

Key dates

• Filing date: Mar 30, 1990
• Grant date: Nov 29, 1994
• Expiry date: Mar 30, 2010

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A01N43/653
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

In the spraying of an aqueous liquor comprising at least one of 1-(4-chlorophenyl)-4,4-dimethyl-3-(1,2,4-triazol-1-yl-methyl)-pentan-3-ol and 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)-butan-2-ol, the improvement which comprises including in the liquor an N-alkyl-lactam of the formula ##STR1## in which R represents alkyl having 8 to 18 carbon atoms and PA1 n represents the numbers 3, 4 or 5,