Antimicrobial siloxane quat formulations and their preparation and use

US6376696B1 · kind B1 · utility

Assignee

• Clariant Corporation · DE

Inventors

• Klaus Raab · Altötting, DE
• Walter Bender · Rheinfelden, CH

Key dates

• Filing date: Jun 19, 2000
• Grant date: Apr 23, 2002
• Expiry date: Jun 19, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/1804
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Disclosed is a process for preparing an antimicrobial formulation by reacting a compound of the formula 1(R1O)3Si—(CH2)3—X  (1)with a compound of the formula 2(H3C)NR2R3  (2)whereR1 is C1-C4-alkylR2 is C8-C20-alkylR3 is methyl or C8-C20-alkylX is Cl or Br,excluding iodides, in a molar ratio of (1):(2)=1:0.9 to 1:1.4,which comprises conducting said reaction in a solvent conforming to the formula 3 whereR4 is C1-C4-alkylR5 is H or methylR6 is H or methylm is 2, 3, 4 or 5,subject to the proviso that when m is 2 R4 and R6 are not both methyl, and not removing this solvent after said reaction, or adding this solvent after said reaction.Further disclosed is an antimicrobial formulation obtainable by the process described above.