SYNTHESIS AND AGGREGATION BEHAVIOR OF OLEFINIC QUATERNARY AMINO SILOXANES

Abstract

Monomeric and oligomeric siloxanes with quaternary amine and olefinic substitutions were synthesized by a reaction scheme involving hydrosilation of Si-H containing siloxanes (monomeric as well as oligomeric) with allyl glycidyl ether in the presence of hexachloroplatinic acid followed by reaction with allyl amine. Olefinic amino hydroxysiloxanes thus obtained were quaternized using methyl iodide. The above mentioned products were found to be highly surface active as was indicated by surface tension measurements. The lowering in surface tension was found to depend upon the number of siloxane units. The aggregation behavior was studied using ¹H-NMR in D₂O, DMSO-d₆ and acetone-d₆.

Keywords:

• Synthesis
• Olefinic Quaternary Amino Siloxane
• Aggregation

ACKNOWLEDGEMENT

We are grateful to Hindustan Lever Research Foundation for financial support and also Dr. V. V. Kumar and Dr. R. G. Bhirud for their kind support during project work.