Photosensitive composition based on a diazonium salt polycondensation product with an ester polymer binder having urethane group
US4840868A · kind A · utility
8Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1987 |
| Grant date | Jun 20, 1989 |
| Priority date | — |
| Expiry date | Dec 21, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/107
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photosensitive composition is described, which contains a diazonium salt polycondensation product and a polymeric binder which is soluble or at least swellable in aqueous-alkaline solutions and comprises a reaction product of a trimellitic anhydride, the free carboxyl group of which is esterified with an alcohol containing a urethane group, with a polymer containing hydroxyl groups and having no further functional groups capable of reaction with acid anhydrides. The composition yields an increased print run and has, at the same time, good storability and developability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.