Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Phosphorus oxide (P4O10) | HCID 14812 | — |
| Reactant | 2,5-Dianilinoterephthalic acid | HCID 82351 | — |
| Product | Quinacridone | HCID 13976 | — |
Reaction Steps
Ring closure: 100 g of 2,5-dianilinoterephthalic acid were introduced with stirring at 80°-90° C. into 400 g of polyphosphoric acid, containing 115-119% P2O5, and the mixture was heated at 125° C. for 1 hour, during which time ring closure occurred to form the corresponding quinacridone.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US06284890B1 |
|---|
| Source dataset | uspto-grants-2001_09 |
|---|
| ORD ID | ord-ab5d43d09418442b81424f0f757d77eb |
|---|
| Source note | uspto-grants-2001_09 |
|---|
