Studies on epoxy-butylated melamine formaldehyde-based anticorrosive coatings from a sustainable resource

Synthesis, characterization, antibacterial and corrosion protective properties of epoxies, epoxy-polyols and epoxy-polyurethane coatings from linseed and Pongamia glabra seed oils

“…It can be accomplished by different approaches such as by using peracetic acid, dioxirane and hydrogen peroxide. Oils such as linseed, soybean, safflower, sunflower, canola, crambe, meadowfoam, lesquerella, rapeseed, rubberseed, castor, tung, coriander, olive and Annona squamosa have been epoxidized by aforementioned agents [1][2][3][4][5][6]. Aliphatic epoxies derived from vegetable seed oils are characterized by good adhesion, flexibility and corrosion resistance properties [5][6][7].…”

“…Oils such as linseed, soybean, safflower, sunflower, canola, crambe, meadowfoam, lesquerella, rapeseed, rubberseed, castor, tung, coriander, olive and Annona squamosa have been epoxidized by aforementioned agents [1][2][3][4][5][6]. Aliphatic epoxies derived from vegetable seed oils are characterized by good adhesion, flexibility and corrosion resistance properties [5][6][7]. Oil epoxies have been used as HCl scavengers, stabilizers, plasticizers, reactive diluents, toughening agents for commercially available epoxy resins, for ink formulations and paints or coatings [5][6][7][8][9][10][11].…”

Synthesis and structural characterization of urea–isobutyraldehyde–formaldehyde resins

“…Peaks at 3.0-3.8 ppm are attributed to methylene groups connecting to nitrogen and carbon atoms. 22 The peaks at 4.0-5.2 ppm are attributed to hydrogen atoms of methylene groups connecting to nitrogen and submethylene groups connecting to hydroxyl and nitrogen, and that at 5.2-6.0 ppm are ascribed to hydrogen atoms in hydroxyl groups and in methylene groups connecting to oxygen. 23 The peaks at 6.2-6.6 ppm are attributed to hydrogen in amido groups.…”

One-pot synthesis and structural characterization of urea-isobutyraldehyde-formaldehyde resin

“…The peaks in chemical shift range of 4.0−4.7 are ascribed to the hydrogen atoms of methylene connected to carbon and nitrogen [14]. The peaks in the chemical shift range of 4.8−5.4 are assigned to hydrogen atoms in hydroxyl [15]. The peak at chemical shift of 9.4 also confirms the existence of hydrogen atoms in aldehyde groups.…”