Self-restoring polyurethane-based polymer and preparation method therefor
US11299578B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Jul 11, 2018 |
| Grant date | Apr 12, 2022 |
| Priority date | — |
| Expiry date | Jan 25, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.