Patent US1358388A successfully refreshed from Google Patents.
EP0184149A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Poly(phenylene ether) and process for its fabrication
Assignee: BASF SE
•
Filing: 1985-11-29
•
Granted: —
•
Expires: 2005-11-29
Abstract
Abstract High molecular weight polyphenylene ethers are prepared from monohydric phenols by a conventional polycondensation, by a method in which the resulting polymers are reacted with an epoxide of the general formula (I) <IMAGE> (I) where R1 and R2 can be identical or different and are each alkyl, cycloalkyl, aryl, aryloxy, alkoxy or carboxyalkyl, each of which may contain a further epoxide group, or C3-C20-alkyl-substituted amino, or R1 is hydrogen and R2 is one of the above groups, or R1 and R2 form part of a cycloalkyl ring.
Inventors
- 👤 Konrad Dr. Mitulla
- 👤 Juergen Dr. Hambrecht
- 👤 Helmut Dr. Tesch
- 👤 Burghard Dr. Schmitt
- 👤 Hans Joachim Dr. Maeder
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 07:23
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/48; C08G65/485
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.