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EP0193721A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Polyimides and process for their preparation

Assignee: Huels AG
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Filing: 1986-01-21
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Granted: —
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Expires: 2006-01-21
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Abstract

Abstract Translated from German Die Erfindung betrifft Polyimide der allgemeinen Formel mit R 1 ,R 2 = H, C 1-3 -Alkyl, Halogen, R 3 = C 2-12 -Alkylen oder m =0,1, X = CH 2 , C(CH 3 ) z , CO, O, S, SO 2 und n = 5 bis 500 sowie ein Verfahren zu ihrer Herstellung durch Umsetzung von N,N'-Bis-maleinsäureimiden der Formel (I) mit Benzodicyclobutenen der Formel (II) The invention relates to polyimides of the general formula with R 1 , R 2 = H, C 1-3 alkyl, halogen, R 3 = C 2-12 alkylene or m = 0.1, X = CH 2 , C (CH 3 ) z , CO, O, S, SO 2 and n = 5 to 500 and a process for their preparation by reacting N, N'-bis-maleimides of the formula (I) with benzodicyclobutenes of the formula (II)

Inventors

  • 👤 Martin Dr. Bartmann

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-05 09:47
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/12

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