Process for using photoimageable films prepared for aqueous photoimageable liquid emulsions
US5741621A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1996 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Dec 23, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/027
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process for preparing an image on a substrate by applying a photoimageable composition on a first substrate, wherein the photoimageable composition, having a solids content from 25 to 60 weight percent, contains a partially neutralized acid-containing polymer formed from a precursor polymer having an acid number from 90 to 160 prior to neutralization and wherein 1 to 15% of acid-containing groups of the precursor polymer are neutralized with base; an ethylenically unsaturated monomer; a photoinitiator or photoinitiating system, water; 0-5% by weight a solution polymer, based on the weight of total polymer present in the composition; and 0-25% by weight of an organic solvent based on the total weight of the organic solvent and water; wherein the liquid composition is present as a stable emulsion, and wherein the liquid composition has a Brookfield viscosity, at 25.degree. C., from about 10 to about 2000 centipoise; drying the coated photoimageable composition to form a photoimageable layer on a first substrate; imagewise exposing the layer to form imaged and non-imaged areas; and developing the exposed layer having imaged and non-imaged areas to form an image on the first substrat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.