ATE99665T1 - PROCESS FOR THE PREPARATION OF MALEIC ACID ANHYDRIDE. - Google Patents

PROCESS FOR THE PREPARATION OF MALEIC ACID ANHYDRIDE.

Info

Publication number
ATE99665T1
ATE99665T1 AT90300725T AT90300725T ATE99665T1 AT E99665 T1 ATE99665 T1 AT E99665T1 AT 90300725 T AT90300725 T AT 90300725T AT 90300725 T AT90300725 T AT 90300725T AT E99665 T1 ATE99665 T1 AT E99665T1
Authority
AT
Austria
Prior art keywords
preparation
maleic acid
acid anhydride
anhydride
maleic
Prior art date
Application number
AT90300725T
Other languages
German (de)
Inventor
Harusige Sugawara
Takasi Okawa
Original Assignee
Mitsui Toatsu Chemicals
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP1013985A external-priority patent/JP2767851B2/en
Priority claimed from JP8701489A external-priority patent/JP2788474B2/en
Application filed by Mitsui Toatsu Chemicals filed Critical Mitsui Toatsu Chemicals
Priority claimed from EP90300725A external-priority patent/EP0381362B1/en
Application granted granted Critical
Publication of ATE99665T1 publication Critical patent/ATE99665T1/en

Links

AT90300725T 1989-01-25 1990-01-23 PROCESS FOR THE PREPARATION OF MALEIC ACID ANHYDRIDE. ATE99665T1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1013985A JP2767851B2 (en) 1989-01-25 1989-01-25 Method for preventing discoloration of maleic anhydride
JP8701489A JP2788474B2 (en) 1989-04-07 1989-04-07 Purification method of maleic anhydride
EP90300725A EP0381362B1 (en) 1989-01-25 1990-01-23 Process for producing maleic anhydride

Publications (1)

Publication Number Publication Date
ATE99665T1 true ATE99665T1 (en) 1994-01-15

Family

ID=27233482

Family Applications (1)

Application Number Title Priority Date Filing Date
AT90300725T ATE99665T1 (en) 1989-01-25 1990-01-23 PROCESS FOR THE PREPARATION OF MALEIC ACID ANHYDRIDE.

Country Status (1)

Country Link
AT (1) ATE99665T1 (en)

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
EEIH Change in the person of patent owner
REN Ceased due to non-payment of the annual fee