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Priority claimed from US06/557,097external-prioritypatent/US4520150A/en
Priority claimed from US06/557,095external-prioritypatent/US4520148A/en
Priority claimed from US06/557,096external-prioritypatent/US4520149A/en
Application filed by Hoechst Celanese CorpfiledCriticalHoechst Celanese Corp
Priority claimed from EP84307811Aexternal-prioritypatent/EP0144174B1/de
Application grantedgrantedCritical
Publication of ATE37555T1publicationCriticalpatent/ATE37555T1/de