Studies in performance of alkyd-amino combinations based on neem oil as a film forming material

摘要

Neem seed extracts,including Neem oil,neem leaf extract and extracts from back roots are widely used in India inayurvedic medicines.Nowadays neem oil is also widely used in commercial products like soaps,tooth paste,insect repellents etc.Azadirachitin,contained in Neem oil is a biologically active chemical,the toxin in Neemoil formany microbes and insects.Various fungistats such as chlorinated phenols,organotion compounds,mercury based compounds are being successfully used inpaints;but after taking in to consideration the cost effectiveness of Neem oil,it becomes an attractive agent to be used in paints systems such as alkyd-amino systems as film forming material.In this paper,an attempt is made to highlight the use of non-traditional oils such as neemoil as film forming material,formulation of alkyd resins based on neem oil as film forming material,formulation of alkyd resin based on neem oil and blending that resin invarious proportions with urea formaldehyde and thiourea formal dehyde resins.The paper also delves into the comparison between neem-alkyd urea formaldehyde blends and the neemalkyd thiourea blends on the basis of various mechanical and microbial resistance tests.