Avecia has announced the appointment of Mark Sudder as a technologist in its pigments and additives business, based in Blackley, U.K. He will provide technical marketing support for customers in the U.K. and mainland Europe.      Mr. Sudder will focus mainly on supporting customers in the ink markets, where there are major applications for Avecia’s range of Solsperse high performance additives.      Mr. Sudder was previously an R&D project leader with Sericol....