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Priority claimed from JP62315038Aexternal-prioritypatent/JPH07100681B2/ja
Priority claimed from JP32776487Aexternal-prioritypatent/JPH0753698B2/ja
Application filed by Mitsui Petrochemical IndfiledCriticalMitsui Petrochemical Ind
Priority claimed from EP88311684Aexternal-prioritypatent/EP0321158B1/de
Application grantedgrantedCritical
Publication of ATE87904T1publicationCriticalpatent/ATE87904T1/de