Bakeable lithographic printing plates with a high resistance to chemicals

A lithographic printing plate precursor comprising

• (a) a substrate with a hydrophilic surface;
• and
• (b) a single-layer or multi-layer radiation-sensitive coating comprising
• a radiation-sensitive component and
• a copolymer CP soluble or dispersible in aqueous alkaline solution and comprising the units A, B and C, wherein unit A has the following formula
• unit B has the following formula
• and unit C is at least one unit selected from
• wherein
• each R and each R1 is independently selected from hydrogen, alkyl, aryl, halogen and —CN,
• X is a spacer,
• each R′ is independently selected from hydrogen, alkyl and aryl,
• n is 0 or 1 and
• R2a, R2, R3a and R3 are independently selected from hydrogen and alkyl, or
• R2 and R3 or R2a and R3a, together with the two C-atoms to which they are bonded, form an aryl group, a hetereoaryl group or an unsaturated or saturated carbocyclic or heterocyclic group;
• r, s, t and u are each 0 or 1, with the proviso that one of r and s is 0 if the C-atom to which R2 and R2a are bonded is part of a C—C double bond, and with the proviso that one of t and u is 0 if the C-atom to which R3 and R3a are bonded is part of a C—C double bond;
• and the dotted line indicates a double bond which may or may not be present, wherein the amount of unit A or, if different units A are present, their total amount, accounts for 5 to 60 wt. % based on the copolymer;
• and/or the amount of unit B or, if different units B are present, their total amount, accounts for 10 to 90 wt. %, based on the copolymer;
• and/or the amount of unit C or, if different units C are present, their total amount, accounts for 5 to 60 wt. %, based on the copolymer.