Classification of alkyd resins

Most common and traditional alkyd resins are classified on the basis of their oil content (wt% of oil in final resin) as  

Long oil alkyd resins have been the workhorse as binders for architectural and do-it-yourself paints, anticorrosive coatings (linseed oil based), metal primers and intermediate coats. They are mainly based on such oils as soybean oil, linseed oil, dehydrated castor oil and safflower oil. 

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Classification and Properties of Alkyd Resins Formulation and Design of Alkyd Resins Uses of Alkyd Resins Saturated Reactive Polyesters Resin Systems for Reduced Solvent Emissions Low-Solvent and Solvent-Free Alkyd Resins... 

Alkyd resins are usually referred to by a brief description based on certain classification schemes. Erom the classification the general properties of the resin become immediately apparent. Classification is based on the nature of the fatty acid and oil length. 

Alkyd resins are usually referred to by a shorthand description based on a certain way of classification or a combined classification, from which the general properties... 

More frequently, alkyd resins are described by a combined classification in terms of their oil length, the type of fatty acids, and any unusual ingredients. Such descriptions as an isophthalic, very long tall oil alkyd or a medium oil dehydrated castor-PE (the PE refers to pentaerythritol, not polyethylene) alkyd or a short oil lauric-benzoic alkyd would immediately project the general properties of the resin. 

Details Solid (crystalline), combustible, but difficult to ignite. Used in the production of polyester and alkyd resins. With EU Directive 67/548/EEC classification corrosive (C). 

Miscellaneous Resins. Under this classification the aniline-formaldehyde class excludes modifications with phenolics. The polyamide class excludes modifications of phthalic alkyds by adipic acid. 

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