摘要 |
Polymers having an average molecular weight Mw (weight average) of 5,000 to 1,000,000 (measured by gel permeation chromatography), comprising structural repeating units of the formulae I-IV: <CHEM> <CHEM> in which R1, R2, R3 and R4 independently of one another are hydrogen, methyl or halogen, R5 and R6 independently of one another are C1-C6alkyl, R7, R8, R9 and R10 independently of one another are hydrogen, C1-C4alkyl, C1-C4alkoxy or halogen, and w, x, y and z are numbers equal to or greater than 1, with the provision that the quotient <MATH> which is obtainable from the sum of the structural units having protecting groups divided by the sum of all of the structural units present, obeys the condition 0.10 </= Q </= 0.50, are suitable as binders for DUV photoresists of high processing stability and flow resistance. |