Application Studies of the Effect of Some Organic Compounds in Coatings Industry

Abstract

With the growing awareness of the importance to reduce the volatile organic content emitted from paints, recent research has relied on the use of water-based paints as an alternative to those based on organic solvents with significant damage to human health and the environment. In this work we reported the synthesis of novel groups of anionic surfactants containing oxapyridazinone derivatives and evaluation them as co-monomer emulsifiers in styrene–butyl acrylate emulsion. The target compounds were prepared according to Scheme 1. The first step was the preparation of the fatty acids 3a-d from the reaction of di-sodium maleate 1 and bromoalkanoic acid 2a-d.Treatments of the fatty acids 3a-d with excess thionyl chloride yield the corresponding fatty acid chlorides 4a-d. Stirring the fatty acid hydrazides 5a-d with chlorosulphonic acid in carbon tetrachloride at room temperature followed by neutralization with sodium SUMMARY XI hydroxide yielded the sulfonated fatty acid hydrazides 6ad. Refluxing a solution of sodium salt of sulphonated fatty acid hydrazide 6a-d and chloroacetic acid in presence of sodium acetate and acetic anhydride for four hours affords the target compounds oxapyridazinone derivatives 7a-d. Scheme 1 O O O O R= a: -(CH2)12-, b: -(CH2)14-, c: -(CH2CH2O)6-, d: -(CH2CH2O)7- (R) (R) SO3Na