Synthesis of oligomer for optical fiber coating
US11028214B2 · kind B2 · utility
1Cited by
11References
15Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 11, 2019 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | May 1, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2115/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for making oligomers is described. The method includes reacting a polyol with a precursor having mixed functionality. The precursor includes a curable functional group and an isocyanate group capable of reacting with an alcohol group of the polyol. The precursor reacts with the alcohol group of the polyol to form a urethane linkage and to add a covalently bonded curable functional group to the polyol. The oligomers can be included in coating compositions for optical fiber and lead to coatings having improved tear strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.