Fiber coating compositions with acylgermane photoinitiators
US11319456B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 12, 2019 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | May 26, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F222/1065
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present disclosure provides coating compositions that can be cured at fast rates as well as coatings and cured products formed from the coating compositions. The coating compositions include an acylgermane photoinitiator that leads to fast cure speeds. The coating compositions include primary coating compositions and secondary coating compositions. The coating compositions can be cured to form primary and secondary coatings of optical fibers. The primary coatings feature low Young's modulus and high tear strength. The primary coatings provide good microbending performance and are resistant to defect formation during the fiber draw process and subsequent handling operations. The secondary coatings feature high Young's modulus and good puncture resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.