Sucrose octaesters as reactive diluents for alkyd coatings
- 88 Downloads
Sucrose octasoyate (SS8) was investigated as a reactive diluent for a medium oil alkyd (MOA). SS8, which is derived from sugar and soybean oil, is 100% biobased, nontoxic, and biodegradable. As a result of its unique molecular architecture, it was expected that SS8 would be an excellent reactive diluent for alkyd coatings. The experiment conducted basically involved the incremental replacement of the MOA with SS8, while maintaining essentially equivalent solution viscosity. The properties of cured coatings were determined using industry standard methods. In general, it was found that SS8 could be used to reduce volatile organic compound content of the coatings, while also reducing drying time (i.e., tack-free time), increasing solvent resistance, and increasing impact resistance. Of the properties measured, the only cured film property that was negatively affected by the use of SS8 was the König pendulum hardness. However, the reduction in König pendulum hardness was only observed when the amount of MOA replaced by SS8 was greater than 10 wt%. Overall, these initial results suggest that SS8 is a very good reactive diluent for alkyd coatings.
KeywordsReactive diluent Alkyd coating Sucrose polyester Sucrose soyate Sucrose fatty acid ester High solids
The authors thank the North Dakota Department of Commerce (Research ND Program Grant No. 1411-J12-74) and the National Science Foundation (Grant No. 1556069) for financial support.
- 1.Anon, “Coating Resins Market by Type (Acrylic, Alkyd, Vinyl, PU, Epoxy, Amine, UPR, SPR & Others), by Technology (Waterborne, Powder, High Solvents, High Solids, UV Cure), by Application (Architectural, Automotive, Wood, & Others)—Global Forecast to 2020.” MarketsandMarkets (2014)Google Scholar
- 2.Jones, FN, “Alkyd Resins,” In: Ullmann’s Encyclopedia of Industrial Chemistry, Vol 2. Wiley-VCH Verlag GmbH & Co, Weinheim, pp 429–446 (2012)Google Scholar
- 8.Milligan, CL, Ward, RJ, Martin, RA, “Hexadienol and Hexadienal Derivatives,” US 3,520,839 (1970)Google Scholar
- 9.Killilea, TH, Bohannon, JM, “Coating Compositions Containing Reactive Diluents and Methods,” US 2004/0254293 A1 (2004)Google Scholar
- 10.Njuku, FW, Mwangi, PM, Thiong, GT, “A Comparison of Cardanol and its Derivatives as Reactive Diluents in Alkyd Coatings.” Chem. Mat., 6 50–61 (2014)Google Scholar
- 11.Hohlein, P, Meixner, J, Pedain, J, “Compositions Containing Octadienyl Ethers as Reactive Thinners,” US 5,252,648 (1993)Google Scholar
- 12.Anon, “The Chemistry of Preparation of Sucrose Esters for the Ink, Paint and Protective Coating Industries,” Sugar Research Foundation, July, 1963.Google Scholar
- 15.Hass, HB “Process for Preparing Drying Oils from Sucrose and Raffinose.” US 2,970,142 (1961)Google Scholar
- 18.Anon, “Applications and Uses for Sucrose Fatty Acid Esters in Paint, Coatings and Paper Coatings,” IP.Com Publication IPCOM000249901D (2017)Google Scholar
- 19.Miller, MS, West, LG, Dinwoodie, RC, Silver, RS, “Two-Stage Method for Preparing Polyol Fatty Acid Polyesters,” US 5,681,948 (1997)Google Scholar