Thermoset coatings from epoxidized sucrose soyate and blocked, bio-based dicarboxylic acids.
A new 100% bio-based thermosetting coating system was developed from epoxidized sucrose soyate crosslinked with blocked bio-based dicarboxylic acids. A solvent-free, green method was used to block the carboxylic acid groups and render the acids miscible with the epoxy resin. The thermal reversibility of this blocking allowed for the formulation of epoxy-acid thermoset coatings that are 100% bio-based. This was possible due to the volatility of the vinyl ethers under curing conditions. These systems have good adhesion to metal substrates and perform well under chemical and physical stress. Additionally, the hardness of the coating system is dependent on the chain length of the diacid used, making it tunable.
Department of Coatings and Polymeric Materials, North Dakota State University, PO Box 6050, Dept 2760, Fargo, ND 58108 (USA).
Curtiss S
CS
Kovash
Erin
E
Pavlacky
Sermadurai
S
Selvakumar
Mukund P
MP
Sibi
Dean C
DC
Webster
D001688:Biological Products / Q000737:chemistry*; D003998:Dicarboxylic Acids / Q000737:chemistry*; D004852:Epoxy Compounds / Q000737:chemistry*; D013395:Sucrose / Q000737:chemistry*; D013696:Temperature; D014753:Vinyl Compounds / Q000737:chemistry; D014835:Volatilization
D001688:Biological Products; D003998:Dicarboxylic Acids; D004852:Epoxy Compounds; D014753:Vinyl Compounds; C100195:vinyl ether; D013395:Sucrose
bio-based; carboxylic acid; coating; epoxidized sucrose soyate; thermosetting