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Priority claimed from JP63025441Aexternal-prioritypatent/JP2577421B2/en
Priority claimed from JP63288287Aexternal-prioritypatent/JPH02134363A/en
Application filed by Mitsui Petrochemical IndfiledCriticalMitsui Petrochemical Ind
Priority claimed from EP89301008Aexternal-prioritypatent/EP0327361B1/en
Application grantedgrantedCritical
Publication of ATE86976T1publicationCriticalpatent/ATE86976T1/en