Phenylene sulphide polymers

摘要

The invention comprises a phenylene sulphide polymer which consists of phenyl triazine units and from 0 to 99% of phenyl units linked through sulphur linkages. They may be prepared by reacting together in a sealed container, sulphur, an alkali metal or alkaline earth metal carbonate, sulphide or oxide, at least one nuclearly halogen disubstituted and/or trisubstituted aromatic compound and a halophenyltriazine. The halophenyltriazines have the formula where at least one R is a chlorine, bromine or iodine atom. Where only one R is a reactive halogen the triazine unit can take a position only at the end of polymer chains or branches, where at least two R's are reactive, the triazine unit will be present at intermediate positions throughout linear or crosslinked polymer molecules and where all three R groups are reactive the triazine unit can act as a crosslinking centre. The nuclearly halogen disubstituted aromatic compound exemplified is p-dichlorobenzene. Catalysts may also be included in the reaction mixture and may be amine polysulphides, copper and nickel containing compounds, basic lead nitrosophenolate, bis-(dialkylthiocarbamyl)sulphides and disulphides, metal sulphides, metals, metal chlorides, ferrocene and N-halo-carboxylamides.