Alkyd resins resources

This book, as a part of the Wiley Series on Renewable Resources presents a wide range of bio-based plastics and highlights some of their applications. Emphasis is placed on materials that are presently in use or show a significant potential for future applications. The book contains an up-to-date, broad, but concise overview of basic and applied aspects of bioplastics. The main focus is on thermoplastic polymers for material use. Elastomers, thermosets and coating applications, like natural rubber or alkyd resins, will be covered in other volumes in the series. 

The beginning of the twentieth century witnessed the birth of a novel class of materials, the synthetic polymers based on monomers derived from fossil resources, but the progress associated with them was relatively slow up to the Second World War and did not affect substantially the production and scope of the naturally based counterparts. Some hybrid materials, arising from the copolymerization between both types of monomers were also developed at this stage as in the case of the first alkyd resins. Interestingly, both monomers used in the first process to synthesize nylon in the late 1930s were prepared from furfural, an industrial commodity obtained from renewable resources, in a joint venture between Quaker Oats and DuPont. 

Alkyd resins are probably among the oldest polymers prepared from renewable resources through the esterification of polyhydroxy alcohols with polybasic and fatty acids. A considerable amount of technological research has... 

Non-ionic surfactants Those, which contain hydrophilic groups, which do not ionize appreciably in aqueous solutions. Gooch JW (2002) Emulsification and polymerization of alkyd resins. Kluwer Academic/ Plenum Publishers, New York. McCutch-eon s emulsifiers and detergents (2000) North American edition, vol 1. McCutch-eon Division of McCutcheon Publishing Co., NJ. Ash M, Ash I (2000) Industrial surfactants. Synapse Information Resources, New York. 

High-solid alkyd resins based on renewable resources... 

Alkyd resins completely based on renewable resources have been the subject of a few studies. EP 0741 175 A2 to Hoechst describes waterborne alkyd emulsions based on renewable resources. The patent describes the use of sorbitol (easily derived from starch) as the polyhydric alcohol part and succinic acid anhydride as the polycarboxylic acid part. Hajek described the use of sorbitol and xylitol in alkyd resin synthesis, whereas Bagchi et al. described the partial replacement of conventional polyols, i.e., glycerol and pentaerythritol, by sorbitol. 

Within the framework of a research project together with Dutch based paint producer SigmaKalon, the development of alkyd resins with low intrinsic viscosity was aimed for. In order to achieve this, we explored the potential of two types of renewable, carbohydrate derived resources as the polyhydric alcohol part of alkyd resins, i.e. sucrose and inulin. " These carbohydrate based resources were chosen because of various reasons ... 

Recently, the development of environmentally friendly binders produced from renewable agricultural resources, e. g. linseed and tall oil fatty acids, has been described [36]. These new poly(HAMCL) resins were applied in high solid alkyd-like coatings and paints. 

Research projects carried out at A F clearly indicate that effective plasticisers for PVC and other resins and binders and additives for alkyd based decorative paints can be based on those raw materials which are the least undisputed from an environmental point of view i.e. renewable resources. These products are not only renewable based but also durable. Provided a positive life cycle analysis, after further R D work plasticisers and high-solid or water borne alkyd paints based on renewables therefore can make an important contribution to a sustainable chemical industry. 

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