Polyvinyl alcohol-styrylpyridinium photosensitive resins and method for manufacture thereof
US4272620A · kind A · utility
39Cited by
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10Claims
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Key dates
| Filing date | Jul 31, 1979 |
| Grant date | Jun 9, 1981 |
| Priority date | — |
| Expiry date | Jul 31, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31699
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A hydrophilic resin comprising a polyvinyl alcohol polymeric backbone and containing styrylpyridinium groups is a photosensitive resin. The photosensitive resin is prepared by reacting a styrylpyridinium salt containing a formyl or acetal group with a polyvinyl alcohol compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.