Use of cover sheet and interposed flexible film with block copolymer composition
US4323637A · kind A · utility
138Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 5, 1981 |
| Grant date | Apr 6, 1982 |
| Priority date | — |
| Expiry date | Jan 5, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/106
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Photosensitive elements comprising a layer of a solvent-soluble, thermoplastic, elastomeric, block copolymer, a nongaseous ethylenically unsaturated compound, and an addition polymerization initiator activatable by actinic light interposed between a support and cover sheet, a flexible polymeric film, e.g., polyamide, being interposed between the cover sheet and the surface of the layer. The elements are useful in preparing printing plates, particularly flexographic printing plates, and other relief images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.