Abstract
Synthesis of aldehydes were tried by four methods as follows;
A) the Rosenmund's reaction, B) reaction of alkylbromide and dimethyl-sulfoxide, C) the Stephen's reaction, D) dehydration of dialkyl selenious acid ester. Aldehydes were obtained by method A and B. Quaternary ammonium salts were obtained by reaction of various aldehydes, dimethyl aniline and ethyl bromide. Aldehyde sodium bisulfite adducts were prepared to test the properties as surfactants. Aldehyde was reacted to urea, melamine and n-butyl amine. Cotton fabrics were treated by these products and water repellent effects were measured. It was found that these products are useful as repellent agents.
