Pyromellitic dianhydride → Acetic Anhydride

HRID 968063

Reaktionsgleichung

Reaktionsgleichung von HRID 968063
[CH:1]1[C:6](C2C=C[C:10]3[C:13]([O:15][C:16](=[O:17])[C:9]=3C=2)=[O:14])=C[C:4]2C(O[C:21](=O)[C:3]=2[CH:2]=1)=O.C1C2C(OC(=O)C=2C=C2C(OC(=O)C=12)=O)=O.CC([N:42](C)C)=O>>[C:13]([O:15][C:16](=[O:17])[CH3:9])(=[O:14])[CH3:10].[N:42]1[CH:6]=[CH:1][CH:2]=[C:3]([CH3:21])[CH:4]=1

Komponenten

5

Edukt 3

HCID 6966Pyromellitic dianhydride2×HCID 31374DimethylacetamideHCID 754945,5'-Bi-2-benzofuran-1,1',3,3'-tetrone2×

Produkt 2

HCID 7918Acetic AnhydrideHCID 79703-Methylpyridine

Versuchsvorschrift

Polymer was made at room temperature by adding 3,4′-ODA, PPD, BPDA, and PMDA with stirring in DMAc in quantities to make polymers with compositions between 5 and 14 mole % BPDA and between 5 and 21 mole % PPD. The remaining monomers were PMDA as the dianhydride and 3,4′-ODA as the diamine. The polymers were each cast on a substrate and converted in a bath of 50 volume % acetic anhydride and 50 volume % beta-picoline, at room temperature, to form a gel film. The gel film was restrained and heated in an oven to dry and cure at 300° C. for 60 minutes, and then heated in 400° C. oven for 5 minutes. The properties were as follows:

Aufarbeitung

  1. customwas made at room temperature
  2. additionby adding 3,4′-ODA

Quellen und Nachweise

ORD-Eintrag
ord-4934ef4e9f334061aa924d7e01e66895
Quelldatensatz
uspto-grants-2005_10
Patentnummer
US06956098B2

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