Process for preparing waterless printing masters
US4077325A · kind A · utility
4Cited by
11References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1977 |
| Grant date | Mar 7, 1978 |
| Priority date | — |
| Expiry date | Mar 10, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41N1/003
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Improved waterless lithographic printing masters are provided having minimum background ink reflection density. The master comprises a crosslinked block copolymer containing elastomeric, ink releasing siloxane blocks chemically linked to organic image accepting thermoplastic blocks, said copolymer having a molecular weight for the organic blocks sufficient to provide strength and a background ink reflection density of less than 0.02 and preferably less than 0.01.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.