Stabilising light-sensitive colloid layers - on pigmented paper for the printing industry by addn of polymeric phosphates

摘要

Light-sensitive colloid layers, e.g. on pigmented paper for the printing industry, are stabilised by the addn. of a polymeric phosphate of variable low chain length, e.g. polyphosphoric acid, polymetaphosphoric acid, their alkali salts and mixtures of these acids and alkali salts.