(Ethylene, vinyl acetal) copolymers and their use in lithographic printing plate precursors
US9562129B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2013 |
| Grant date | Feb 7, 2017 |
| Priority date | — |
| Expiry date | Dec 3, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/039
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A copolymer includes (i) a plurality of ethylenic moieties A having a structure according to the following formula:wherein R2 and R3 independently represent hydrogen, a halogen, or an optionally substituted linear, branched, or cyclic alk(en)yl group, or an optionally substituted aromatic or heteroaromatic, and (ii) a plurality of acetal moieties B having a structure according to the following formula:wherein L represents a divalent linking group; x=0 or 1; and R1 represents an optionally substituted aromatic or heteroaromatic group including at least one hydroxyl group. Use of these polymers in the coating of lithographic printing plates provides a good abrasion resistance while the balance between the ink acceptance, arising from the ethylenic moieties, and the solubility in an alkaline developer, arising form the acetal moieties, can be controlled efficiently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.