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Priority claimed from JP23039384Aexternal-prioritypatent/JPS61108647A/en
Priority claimed from JP23039484Aexternal-prioritypatent/JPS61110550A/en
Application filed by Mitsui Petrochemical Ind, Shell Oil CofiledCriticalMitsui Petrochemical Ind
Priority claimed from EP85307953Aexternal-prioritypatent/EP0184324B1/en
Application grantedgrantedCritical
Publication of ATE77633T1publicationCriticalpatent/ATE77633T1/en