Alkyd resins classification

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. 

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... 

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). 

Another classification is unmodified or modified alkyds. Modified alkyds contain other monomers in addition to polyols, polybasic acids, and fatty acids. Examples are styrenated alkyds and silicone alkyds. Since they are closely related to alkyd resins, uralkyds and epoxy esters are also discussed. 

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

Classification Butylated melamine-formaldehyde resin Uses Crosslinking agent for alkyd/polyester or acrylic resins, for use in solv.-borne systems, industrial stoving finishes, automotive finishes, metal decorating and dipping enamels Features Provides exc. film hardness, outdoor durability, good flow and appearance... 

---