Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 2-Aminoquinazolin-4(3H)-one, is researched, Molecular C8H7N3O, CAS is 20198-19-0, about Heat stabilizers for poly(vinyl chloride) based on 4-quinazolinone derivatives.Recommanded Product: 2-Aminoquinazolin-4(3H)-one.
The thermooxidative stability of PVC was increased 2-16 folds by addition of 4-quinazolinone (I) derivatives due to the bonding of HCl and substituting the quinazolinone group for the labile Cl group. The stabilizing activity of I derivatives under isothermal and nonisothermal conditions depended on the nature of groups substituting the H atom in I. Mixtures of 2-amino-4-quinazolinone Co and Na salts with Ca stearate and Pb silicate stabilizers had a synergistic effect on the thermooxidative stability of PVC. The Co acetate complex of 2-amino-4-quinazolinone increased the thermal stability of PVC linoleum 2.5-3 folds compared to conventional stabilizer (Ca stearate) without adversely affecting the physicomech. properties of the linoleum.
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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis