Styrene-anhydride copolymer containing amido group, the process for producing the same and use thereof

摘要

The present invention relates to a novel styrene-anhydride copolymer containing amido group, which comprises the following repeating units (I) and (II):whereinR represents a residue of (meth)acrylate monomer containing hydroxyl group;R<1 >and R<2 >are the same or different and each represents a C1-6 alkyl group, or R<1 >and R<2 >are taken together with the nitrogen atom to which they attach to form a 5- to 6-member heterocyclic group containing nitrogen.The present invention also relates to process for producing the above copolymer and to the use of the copolymer as a photo resist in an alkaline soluble development of an irradiative reaction and as a solder resistant photo resist in printed circuit boards.