Process for the ammonium hydroxide hydrolysis of polymers of acetoxystyrene to polymers of vinylphenol
US4678843A · kind A · utility
23Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1986 |
| Grant date | Jul 7, 1987 |
| Priority date | — |
| Expiry date | Sep 29, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymers of 4-acetoxystyrene are hydrolyzed to polymers of p-vinylphenol with ammonium hydroxide followed by sparging with carbon dioxide. Such polymers are useful in photoresist and as protective coatings for metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.