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Priority claimed from JP63103181Aexternal-prioritypatent/JP2548296B2/ja
Priority claimed from JP63103180Aexternal-prioritypatent/JP2548295B2/ja
Application filed by Mitsui Petrochemical IndfiledCriticalMitsui Petrochemical Ind
Priority claimed from EP89304109Aexternal-prioritypatent/EP0339935B1/de
Application grantedgrantedCritical
Publication of ATE99527T1publicationCriticalpatent/ATE99527T1/de