Effect of pigmentation on polyurethane/polysiloxane hybrid coatings was written by Gao, Tongzhai;Maya-Visuet, Enrique;He, Zhouying;Castaneda-Lopez, Homero;Zvonkina, Irina J.;Soucek, Mark D.. And the article was included in Journal of Applied Polymer Science in 2016.Name: 2-Butyl-2-ethylpropane-1,3-diol The following contents are mentioned in the article:
Rutile TiO2 was formulated into polyurethane/polysiloxane hybrid coatings in order to investigate the influence of pigmentation on the inorganic phase of the hybrid coatings. Two urethanes were prepared from the isocyanurate of hexane diisocyanate (HDI), alkoxysilane modified HDI, and tetra-Et orthosilicate (TEOS) oligomers, with oligoesters derived from either cyclohexane diacids (CHDA) and 2-butyl-2-ethyl-1,3-propanediol (BEPD) or adipic acid (AA), isophthalic acid (IPA), 1,6-hexanediol (HD), and trimethylol propane (TMP). The oligoesters were spectroscopically characterized using GPC, FT-IR, and NMR. Chem. interaction between the TiO2 and the sol-gel precursor was investigated using solid-state 29Si NMR and XPS. The morphol., mech., viscoelastic, thermal properties of the pigmented coatings are evaluated as a function of pigmentation volume concentration (PVC). Using AFM and SEM, the pigment was observed to be well dispersed in the polymer binder. The thermal stability, the tensile modulus, and strength of the coatings were enhanced with increasing PVC, whereas the pull-off adhesion and flexibility (elongation-at-break) were reduced with increasing PVC. Finally, the pigmented coatings were evaluated by electrochem. impedance spectroscopy (EIS) and the results showed that 10 wt % of the pigment improved the corrosion resistance of the entire coating system. © 2015 Wiley Periodicals, Inc. Appl. Polym. Sci. 2016, 133, 42947. This study involved multiple reactions and reactants, such as 2-Butyl-2-ethylpropane-1,3-diol (cas: 115-84-4Name: 2-Butyl-2-ethylpropane-1,3-diol).
2-Butyl-2-ethylpropane-1,3-diol (cas: 115-84-4) belongs to alcohols. Similar to water, an alcohol can be pictured as having an sp3 hybridized tetrahedral oxygen atom with nonbonding pairs of electrons occupying two of the four sp3 hybrid orbitals. A multistep synthesis may use Grignard-like reactions to form an alcohol with the desired carbon structure, followed by reactions to convert the hydroxyl group of the alcohol to the desired functionality.Name: 2-Butyl-2-ethylpropane-1,3-diol
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