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AssigneeKorea Research Institute of Chemical Technology
InventorsSung Yeon Hwang, Jeyoung Park, Dong Yeop Oh, Jong Geon Jegal, Seon Mi Kim, Hyeon Yeol Jeon
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A self-restoring polyurethane-based polymer obtained by polymerization of a composition containing an aromatic disulfide diol represented by Chemical Formula, HO—Ar1—S—S—Ar2—OH, an alicyclic polyisocyanate, and a polyol. Ar1 and Ar2 each are independently a substituted or unsubstituted C6-C30 arylene group. The composition satisfies Equation, 0.1≤M[disulfide]/M[OH]. M[disulfide] is a total mole number of the aromatic disulfide diol in the composition, and M[OH] is a total mole number of the aromatic disulfide diol and the polyol in the composition.
A self-restoring polyurethane-based polymer obtained by polymerization of a composition containing an aromatic disulfide diol represented by Chemical Formula 1 below and comprising bis (4-hydroxyphenyl) disulfide, an alicyclic polyisocyanate comprising isophorone diisocyanate (IPDI), and a polyol, wherein the self-restoring polyurethane-based polymer has a self-restoring polyurethane rate of 50% or more at a temperature of 25° C.,
A preparation method for a self-restoring polyurethane-based polymer, comprising polymerizing a composition containing an aromatic disulfide diol represented by Chemical Formula 1 below and comprising bis (4-hydroxyphenyl) disulfine, an alicyclic polyisocyanate comprising isophoronediisoyanate (IPDI), and a polyol,
Dependencies are inferred from the claim text.