Patent · US Expired

Tetraaroxyperylene-3,4,9,10-tetracarboxylic polyimides

US5677417A · kind A · utility

60Cited by
1References
4Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 29, 1995
Grant dateOct 14, 1997
Priority date
Expiry dateAug 29, 2015

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC09B69/102
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

Polymeric tetraaroxyperylene-3,4,9,10-tetracarboxylic diimides of the formula I ##STR1## (R.sup.1 : denotes identical or different aryl radicals which may be substituted by cyano, nitro, halogen, C.sub.1 -C.sub.18 -alkoxy, C.sub.5 -C.sub.7 -cycloalkyl and/or C.sub.1 -C.sub.18 -alkyl and may each contain up to 24 carbon atoms; PA1 R.sup.2 : denotes C.sub.2 -C.sub.30 -alkylene groups whose carbon chain may be interrupted by from 1 to 10 oxygen atoms in ether function or by a phenylene or cyclohexylene group, or optionally C.sub.1 -C.sub.10 -alkylene- or oxygen-bridged C.sub.6 -C.sub.30 -arylene or cyclohexylene radicals; PA1 n: is from 2 to 100), preparation thereof and use thereof and also tetraaroxypery-lene-3,4,9,10-tetracarboxylic dianhydrides as intermediates therefor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.