| 主权项 |
1. A method of preparing a negative-working lithographic printing plate precursor comprising the steps of:
providing a support having a hydrophilic surface or which is provided with a hydrophilic layer; providing a coating on the support, the coating including a photopolymerizable layer and optionally an intermediate layer between the photopolymerizable layer and the support, the coating further including a polysiloxane present in the photopolymerizable layer and/or in the optional intermediate layer; wherein the polysiloxane is obtained by reacting a first organosilicon compound represented by the general Formula (I) and a second organosilicon compound represented by the general Formula (II): R1 represents a group including at least one free radical polymerizable group; R2, R3, R6, and R7 independently represent an alkoxy, aryloxy, or an acyloxy group, or an optionally substituted alkyl, cycloalkyl, alkenyl, alkynyl, aryl, or heteroaryl group; R4 and R8 independently represent an optionally substituted alkyl, cycloalkyl, alkenyl, alkynyl, aryl, heteroaryl group, or acyl group; R5 represents a hydrophilic group selected from a carboxylic acid or a salt thereof, a sulphonic acid or a salt thereof, a sulphuric acid or a monoester or a salt thereof, a hydrocarbon group substituted with at least one hydroxyl group, an oligoalkylene oxide group, a quaternary ammonium group, a phosphonium group, or combinations thereof; and L1 represents a di- or trivalent linking group; and R1 and L1 are bonded to the silicon atom via a carbon atom. |
