摘要:
A PROCESS FOR PREPARING TELOMERS OF STYRENE AND MALEIC ACID ANHYDRIDE OF A MOLECULAR WEIGHT OF LESS THAN 2500 ID DISCLOSED. POLYMERIZATION IS EFFECTED AT A TEMPERATURE OF 160*C. TO 270*C. IN THE PRESENCE OF A R ADICAL-FORMING CATALYST AND A CHAIN-TERMINATING SOLVENT WHICH MAY BE BENZENE OR A BENZENE SUBSTITUTED ONLY BY ONE OR MORE METHYL GROUPS. THE POLYMERIZATION IS PREFERABLY CARRIED OUT AT AN ELEVATED PRESSURE.