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US 7,553,607 B2Granted
Interlayer for lithographic printing plates
AssigneeKodak Graphic Communications GmbH
InventorsUlrich Fiebag, Hans-Joachim Timpe, Ursula Muller
Life of this patent
Estimating the term…
Abstract
Lithographic substrate comprising (a) a dimensionally stable plate- or foil-shaped support, (b) an aluminum oxide layer provided on at least one side of the support (a), and (c) a hydrophilic layer applied onto the aluminum oxide layer comprising at least one phosphono-substituted siloxane of the general formula (I).
Claims16
A process for the production of a lithographic substrate comprising:
- (a) applying an aqueous solution comprising at least one phosphono-substituted siloxane of the general formula (I)
- wherein
- R1 is selected from a hydrogen atom, a hydroxy group, a linear or branched C1-C20 alkyl, linear or branched C2-C20 alkenyl, linear or branched C1-C20 alkoxy, linear or branched C2-C20 alkinyl, aryl, arylalkyl, alkylaryl, arylalkenyl, alkenylaryl, arylalkinyl, alkinylaryl, acyloxy group and a group —CHR6—PO32−,
- R2 and R3 are independently selected from a hydrogen atom, a linear or branched C1-C20 alkyl, linear or branched C2-C20 alkenyl, linear or branched C2-C20 alkinyl, aryl, arylalkyl, alkylaryl, arylalkenyl, alkenylaryl, arylalkinyl and alkinylaryl group,
- R4 is selected from a hydrogen atom, a linear or branched C1-C20 alkyl, linear or branched C2-C20 alkenyl, linear or branched C2-C20 alkinyl, aryl, arylalkyl, alkylaryl, arylalkenyl, alkenylaryl, arylalkinyl, alkinylaryl group and the group —CHR6—PO32−,
- R5 is selected from a hydrogen atom, a linear or branched C1-C20 alkyl, linear or branched C2-C20 alkenyl, linear or branched C2-C20 alkinyl, aryl, arylalkyl, alkylaryl, arylalkenyl, alkenylaryl, arylalkinyl, alkinylaryl group and the group —CHR6—PO32−,
- Z represents —(CR6R7)x— or arylene, or a combination of two or more thereof,
- R6 and R7 are independently selected from a hydrogen atom, a linear or branched C1-C6 alkyl, linear or branched C2-C6 alkenyl, linear or branched C2-C6 alkinyl, aryl, arylalkyl, alkylaryl, arylalkenyl, alkenylaryl, arylalkinyl and alkinylaryl group,
- n is an average value and has a value from 1 to 200 and
- x is an integer from 1 to 100,
- M represents the counterion(s) needed for charge equalization and is selected from monovalent, divalent or multivalent cations, and
- m is the number of cations needed for charge equalization;
- onto a dimensionally stable plate- or foil substrate with an aluminum oxide layer;
- (b) drying at a temperature from 30 to 120° C.
11 more elements
A lithographic printing plate precursor comprising
- (a) a lithographic substrate, and
- (b) one or more radiation-sensitive layers applied thereto,
- wherein the lithographic substrate comprises:
- (a) a dimensionally stable plate- or foil support,
- (b) an aluminum oxide layer provided on at least one side of the support (a), and
- (c) a hydrophilic layer applied onto the aluminum oxide layer comprising at least one phosphono-substituted siloxane of the general formula (I)
- wherein
- R1 is selected from a hydrogen atom, a hydroxy group, a linear or branched C1-C20 alkyl, linear or branched C2-C20 alkenyl, linear or branched C1-C20 alkoxy, linear or branched C2-C20 alkinyl, aryl, arylalkyl, alkylaryl, arylalkenyl, alkenylaryl, arylalkinyl, alkinylaryl, acyloxy group and a group —CHR6—PO32−,
- R2 and R3 are independently selected from a hydrogen atom, a linear or branched C1-C20 alkyl, linear or branched C2-C20 alkenyl, linear or branched C2-C20 alkinyl, aryl, arylalkyl, alkylaryl, arylalkenyl, alkenylaryl, arylalkinyl and alkinylaryl group,
- R4 is selected from a hydrogen atom, a linear or branched C1-C20 alkyl, linear or branched C2-C20 alkenyl, linear or branched C2-C20 alkinyl, aryl, arylalkyl, alkylaryl, arylalkenyl, alkenylaryl, arylalkinyl, alkinylaryl group and the group —CHR6—PO32−,
- R5 is selected from a hydrogen atom, a linear or branched C1-C20 alkyl, linear or branched C2-C20 alkenyl, linear or branched C2-C20 alkinyl, aryl, arylalkyl, alkylaryl, arylalkenyl, alkenylaryl, arylalkinyl, alkinylaryl group and the group —CHR6—PO32−,
- Z represents —(CR6R7)x— or arylene, or a combination of two or more thereof,
- R6 and R7 are independently selected from a hydrogen atom, a linear or branched C1-C6 alkyl, linear or branched C2-C6 alkenyl, linear or branched C2-C6 alkinyl, aryl, arylalkyl, alkylaryl, arylalkenyl, alkenylaryl, arylalkinyl and alkinylaryl group,
- n is an average value and has a value from 1 to 200 and
- x is an integer from 1 to 100,
- M represents the counterion(s) needed for charge equalization and is selected from monovalent, divalent or multivalent cations, and
- m is the number of cations needed for charge equalization.
14 more elements
A lithographic printing plate precursor comprising
- (a) a lithographic substrate, and
- (b) an image-wise present oleophilic coating,
- wherein the lithographic substrate comprises:
- (a) a dimensionally stable plate- or foil support,
- (b) an aluminum oxide layer provided on at least one side of the support (a), and
- (c) a hydrophilic layer applied onto the aluminum oxide layer comprising at least one phosphono-substituted siloxane of the general formula (I)
- wherein
- R1 is selected from a hydrogen atom, a hydroxy group, a linear or branched C1-C20 alkyl, linear or branched C2-C20 alkenyl, linear or branched C1-C20 alkoxy, linear or branched C2-C20 alkinyl, aryl, arylalkyl, alkylaryl, arylalkenyl, alkenylaryl, arylalkinyl, alkinylaryl, acyloxy group and a group —CHR6—PO32−,
- R2 and R3 are independently selected from a hydrogen atom, a linear or branched C1-C20 alkyl, linear or branched C2-C20 alkenyl, linear or branched C2-C20 alkinyl, aryl, arylalkyl, alkylaryl, arylalkenyl, alkenylaryl, arylalkinyl and alkinylaryl group,
- R4 is selected from a hydrogen atom, a linear or branched C1-C20 alkyl, linear or branched C2-C20 alkenyl, linear or branched C2-C20 alkinyl, aryl, arylalkyl, alkylaryl, arylalkenyl, alkenylaryl, arylalkinyl, alkinylaryl group and the group —CHR6—PO32−,
- R5 is selected from a hydrogen atom, a linear or branched C1-C20 alkyl, linear or branched C2-C20 alkenyl, linear or branched C2-C20 alkinyl, aryl, arylalkyl, alkylaryl, arylalkenyl, alkenylaryl, arylalkinyl, alkinylaryl group and the group —CHR6—PO32−,
- Z represents —(CR6R7)x— or arylene, or a combination of two or more thereof,
- R6 and R7 are independently selected from a hydrogen atom, a linear or branched C1-C6 alkyl, linear or branched C2-C6 alkenyl, linear or branched C2-C6 alkinyl, aryl, arylalkyl, alkylaryl, arylalkenyl, alkenylaryl, arylalkinyl and alkinylaryl group,
- n is an average value and has a value from 1 to 200 and
- x is an integer from 1 to 100,
- M represents the counterion(s) needed for charge equalization and is selected from monovalent, divalent or multivalent cations, and
- m is the number of cations needed for charge equalization.
14 more elements
Dependencies are inferred from the claim text.