Stable solutions of monoalkyl tin alkoxides and their hydrolysis and condensation products
US11300876B2 · kind B2 · utility
1Cited by
15References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2019 |
| Grant date | Apr 12, 2022 |
| Priority date | — |
| Expiry date | Jun 4, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Precursor solutions for radiation patternable coatings are formed with an organic solvent and monoalkyl tin trialkoxides in which the water content of the solvent is adjusted to be within 10 percent of a selected value. Generally, the water content of the solvent is adjusted through water addition, although water removal can also be used. In some embodiments, the adjusted water content of the solvent can be from about 250 ppm by weight to about 10,000 ppm by weight. With the appropriate selection of ligands, the adjusted precursor solutions can be stable for at least about 42 days, and in some cases at least 8 months.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.