Photo-curable polymer composition and flexographic printing plates containing the same
US6326127A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1999 |
| Grant date | Dec 4, 2001 |
| Priority date | — |
| Expiry date | Dec 16, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/038
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a photo-curable polymer composition comprising PA1 (a) a first block copolymer comprising at least two blocks A of polymerised monovinyl aromatic monomer, at least one internal block B of polymerised conjugated diene monomer, and at least one tapered or random block C of polymerised monovinyl aromatic monomer and polymerised conjugated diene monomer and/or at least one block D which may be a block of polymerised conjugated diene monomer or a tapered or random block of polymerised monovinyl aromatic monomer and polymerised conjugated diene monomer, wherein block C is an internal polymer block adjacent a terminal block A or an internal block A which is adjacent to a terminal block D, and block D is a terminal block adjacent an internal block A, and, optionally, a residue of a coupling agent, wherein the residue, if present, is derived from a coupling agent containing alkoxy or epoxy functional groups; and PA1 (b) a photo-initiator. The present invention further relates to a flexographic printing plate precursor comprising a photo-curable layer sandwiched between two release films or a release film and a support. In addition, the present invention rela…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.