Polyurethane Dispersions Based on Interesterification Product of Fish and Linseed Oil

Abstract

Alkyd and styrenated alkyd resins based on fish oil and their interesterifications with linseed oil were synthesized. The various properties of fish oil, such as its iodine value, acid value, saponification value and moisture content were determined. The interesterification product of fish oil and linseed oil can be used to partially replace the commercially available linseed oil alkyd resin. Alkyd resin and styrenated alkyd resin were modified with 2,2 dimethylolpropionic acid to introduce acid functionality and then sequentially reacted with isophorone diisocyanate, neutralized with amine, chain extended with ethylenediamine and dispersed in water to form a polyurethane dispersion. The newly synthesized resins and polyurethane dispersions were studied for coating properties such as scratch hardness, adhesion, flexibility, impact, solvent and chemical resistance. The polyurethane dispersions exhibited superior coating properties to those of their respective alkyds and styrenated alkyds.

Fatty acid based waterborne air drying epoxy ester resin for coating applications

“…Fish oil and linseed oil modified polyurethane dispersion (PUD) have shown good coating properties as reported by Nimbalker and Athawale [19]. The fish oil PUD exhibited good impact resistance, adhesion and flexibility.…”

Styrenated Oil Synthesis with Cyclic Carbonate Functional Groups on Polystyrene Segment

“…Therefore, in the present study, refined grade linseed oil was used as in the literature for the preparation of alkyd resin and urethane alkyd, where the transesterification reaction was applied [ 24 , 35 , 36 ].…”