Studies on newly developed urethane modified polyetheramide coatings from Albizia benth oil

Abstract

Polyetheramide resin based on the condensation polymerisation of N-N bis (2-hydroxyethyl) Albizia benth oil fatty amide with Bisphenol-A was synthesized. The polyetheramide was further modified with urethane linkage resulting from the addition reaction of free hydroxyl groups of the hydroxylethyl Albizia benth oil fatty amide and the isocyanate moeity of toluene 2,4 di-isocyanate. The spectroscopic characterisation (FT-IR, 1 H NMR, 13C NMR) as well as the thermal, physicochemical and coating properties of the polyetheramide and its urethaned modified derivatives were carried out. Urethanation led to curing at lower temperature, increase in glass transition and improvement in coating properties and resistance to chemical corrosion

Nonedible Vegetable Oil-Based Polyols in Anticorrosive and Antimicrobial Polyurethane Coatings

“…Akintayo et al prepared PEtA polyol-based coatings from ABO and bisphenol-A with different loadings of TDI [ 144 ]. The prepared coatings achieved good flexibility, adhesion, scratch hardness properties, and impact resistance with increased loading of TDI (10–20% TDI loading).…”

“…The prepared coatings achieved good flexibility, adhesion, scratch hardness properties, and impact resistance with increased loading of TDI (10–20% TDI loading). These observed results may be due to the presence of polar urethane, amide, ether groups and fatty acid chains, which form bonds with the substrate [ 144 ]. A MO-modified PEtA polyol-based PU was reported and exhibited good anticorrosion performance against acid and salt solutions [ 35 ].…”

Blocked isocyanates as alternative curing agents for epoxy-polyurethane resins based on modified vegetable oils

“…Invariably, the primary goal is to care for the natural environment. Hence, in the synthesis and modification of plastic materials such as: poly(hydroxyalcanoates) [1], polyesteramides [2], polyetheramides [3], alkyds [4] and epoxy resins, there is a wide interest in the use of raw materials of natural origin. Vegetable oils, which are biodegradable, renewable, non-toxic, environmentally benign and easily modified [5], are used in the technology of epoxies as: additives, flexibilizers [6,7], and diluents [8], decreasing viscosity of epoxy resins or bio-alternatives for raw petrochemical materials in the process of their synthesis [9][10][11].…”

Development of PU Coatings from Neem Oil Based Alkyds Prepared by the Monoglyceride Route

“…Vegetable oils include linseed, neem, tall, palm, nahar, soyabean, sunflower, cotton, jatropha, karanja, castor, etc. oils, which have been used to prepare various valuable polymeric resins such as monoglycerides, diethanolamides, polyesteramides, polyetheramides, epoxy, and polyurethane (PU) [10][11][12][13][14][15]. Thermal and mechanical properties of plant oil based PU are often comparable or even better than those prepared from petroleum based PU [4].…”