Ultraviolet and thermostable non-isocyanate polyurethane coatings

Non-isocyanate polyurethane (NIPU) from tris-2-hydroxy ethyl isocyanurate modified fatty acid for coating applications

“…Though it exhibits excellent performance properties, its uses have been overshadowed due to toxicity and carcinogenic nature of isocyanate compounds [5][6][7]. Non-isocyanate polyurethane (NIPU) is a novel route of synthesis, introduced nearly a decade ago and has now become an attractive area of research in both academics and industry for preparation of sustainable, impermeable, moisture-insensitive isocyanate free polyurethanes [8,9]. The secondary hydroxyl group forms hydrogen bonding with the urethane group which results in excellent mechanical properties accompanied by marked resistance to solvents and chemicals [10][11][12].…”

“…Non-isocyanate polyurethane (NIPU) is a novel route of synthesis, introduced nearly a decade ago and has now become an attractive area of research in both academics and industry for preparation of sustainable, impermeable, moisture-insensitive isocyanate free polyurethanes [8,9]. The secondary hydroxyl group forms hydrogen bonding with the urethane group which results in excellent mechanical properties accompanied by marked resistance to solvents and chemicals [10][11][12]. Various applications of NIPU are in the fields of coatings, sealants, foams etc.…”

Syntheses of epoxyurethane polymers from isocyanate free oligo-polyhydroxyurethane

“…In addition to PHU networks, Figovsky et al have worked on PHU/epoxy hybrid materials. Indeed, this team partially carbonated polyepoxy compounds and reacted them with amines to obtain hybrid epoxy/PHU materials [42][43][44][45][46]. These hybrid coatings are actually commercialized under the trade name Green Polyurethane TM and represent the first successful application of PHUs in everyday life.…”

Carbonation of Vegetable Oils: Influence of Mass Transfer on Reaction Kinetics

“…Currently, carbonated vegetable oils are mainly used in the synthesis of nonisocyanate polyurethanes (NIPU), which does not require the use of highly toxic isocyanates compared with conventional methods 12 .…”