Preparation of norbornane-based PAC ballasts
US9261781B2 · kind B2 · utility
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19References
19Claims
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Key dates
| Filing date | Aug 9, 2013 |
| Grant date | Feb 16, 2016 |
| Priority date | — |
| Expiry date | Aug 9, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Embodiments in accordance with the present invention provide for norbornane-type ballast materials, norbornane-type photoactive compounds derived from such ballast materials and alkali-soluble positive-tone polymer compositions that encompass such norbornane-type photoactive compounds and one of a PBO or PNB resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.