Claims
- 1. A lithographic printing plate precursor which includes a polymeric compound having the structural unit wherein R1 represents an optionally substituted cyclic or alkyl group, x represents 0 or 1, and (i) A represents an optionally-substituted alkylene group, or (ii) A is of general formula —CHR4CH2— wherein R4 represents a hydrogen or halogen atom, a hydroxy group or an optionally-substituted alkyl, alkoxy, or phenyl group.
- 2. A precursor according to claim 1, wherein x represents 0.
- 3. A precursor according to claim 1, wherein optional substituents of group R1 are selected from hydroxy; optionally-substituted alkoxy, hydroxyalkoxy and —SO2NR2R3 groups, where R2 and R3 independently represent a hydrogen atom or an alkyl group; functional groups containing a radiation sensitive atom or group; functional groups which increase the heat sensitivity of said polymeric compound prepared in the process; dye-containing groups; groups which include an ethylenically-unsaturated double bond, and groups that may aid the adhesion of said polymeric compound prepared in the process to a substrate.
- 4. A precursor according to claim 3, wherein optional substitutents of group R1 are selected from hydroxy and optionally-substituted alkoxy, hydroxyalkyl and —SO2NR2R3 groups.
- 5. A precursor according to claim 1, wherein said polymeric compound having structural unit I is optionally derivatized by reaction with a compound containing a radiation sensitive atom or group; functional groups which increase the heat sensitivity of said polymeric compound prepared in the process; a dye containing group; a group which includes an ethylenically unsaturated double bond; or a group that may aid the adhesion of said polymeric compound prepared in the process to a substrate of a printing member.
- 6. A precursor according to claim 1, wherein said polymeric compound having structural unit I is provided in a first layer which is a radiation layer, a heat sensitive layer, or a combination thereof, which is arranged to be imagewise exposed to radiation, heat, or a combination thereof followed by optional development, to provide ink-accepting and non-ink-accepting areas.
- 7. A precursor according to claim 6, including 20 wt % to 70 wt % of polymeric compounds having the structural unit I.
- 8. A precursor according to claim 6, including less than 20 wt % of polymeric compounds having the structural unit I.
- 9. A process for the preparation of a polymeric compound having the structural unit for a printing member precursor, the process including the step of selecting an amine of formula R′NH2 to give when reacted with a polymeric compound having the structural unit followed by optional derivatization, the desired resistance to a solvent used in printing; treating said compound having the structural unit IV with said amine to yield a compound having the structural unit III; and optionally derivatizing said compound having the structural unit III to yield another compound of structural unit III, wherein R1 represents an optionally substituted cyclic or alkyl group, x represents 0 or 1, and (i) A represents an optionally-substituted alkylene group, or (ii) A is of general formula —CHR4CH2— wherein R4 represents a hydrogen or halogen atom, a hydroxy group or an optionally-substituted alkyl, alkoxy, or phenyl group.
- 10. A polymeric compound having the structural unit wherein R1 represents an optionally substituted cyclic or alkyl group and x represents 0 or 1, and (i) A represents an optionally-substituted alkylene group, or (ii) A is of general formula —CHR4CH2 — wherein R4 represents a hydrogen or halogen atom, a hydroxy group or an optionally-substituted alkyl, alkoxy, or phenyl group.
- 11. A printing member having printing and non-printing areas wherein said printing areas include a first layer which includes a polymeric compound having the structural unit wherein R1 represents an optionally substituted cyclic or alkyl group and x represents 0 or 1, and (i) A represents an optionally-substituted alkylene group, or (ii) A is of general formula —CHR4CH2— wherein R4 represents a hydrogen or halogen atom, a hydroxy group or an optionally-substituted alkyl, alkoxy, or phenyl group.
Priority Claims (1)
Number |
Date |
Country |
Kind |
9811813 |
Jun 1998 |
GB |
|
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation of international application Ser. No. PCT/GB99/01731 filed Jun. 2, 1999, which international application was published by the International Bureau in English on Dec. 9, 1999 and claims priority from Application GB 9811813.6, which was filed on Jun. 3, 1998.
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Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/GB99/01731 |
Jun 1999 |
US |
Child |
09/726347 |
|
US |