Aqueous 2-propoxyethanol containing processing composition for lithographic printing plates
US4308340A · kind A · utility
22Cited by
2References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 8, 1980 |
| Grant date | Dec 29, 1981 |
| Priority date | — |
| Expiry date | Aug 8, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developer suitable for machine and hand processing may now be made which accomplishes the aforementioned objects which is an aqueous solution comprising 2-propoxyethanol as a detackifying agent, an adjuvant solvent, a nonionic surfactant with a hydrophile-lipophile balance over about 17, and an inorganic salt. A developer/finisher may be prepared by adding thereto a water-soluble polymeric film former which is preferably polyvinyl pyrrolidone. A suspending agent, e.g. polyethylene glycol, is added to hand processing solutions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.