Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Formaldehyde | HCID 712 | — |
| Reactant | Phenol | HCID 996 | — |
| Reactant | (+-)-alpha-Pinene | HCID 6654 | — |
| Reactant | Maleic Anhydride | HCID 7923 | — |
| Product | Dicyclopentadiene | HCID 6492 | 2,044.7% |
Reaction Steps
1350 g of dicyclopentadiene are polymerized in the presence of 150 g of α-pinene at 230° C under a pressure of 4 atmospheres. A semisolid, yellow paste is obtained. 100 g of this product and 47 g of phenol are heated to 120° C. Simultaneously 15 g of maleic anhydride and 4 g of paraformaldehyde are added. After maintaining the mixture for 30 minutes at 120° C heating takes place for 6 hours to 220° C, the pressure being reduced for the last 30 minutes of the reaction. 145 g (=87.5%) of a yellow resin having a melting point of 76° to 78° C and a viscosity of 70 cP are obtained.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US04105610 |
|---|
| Source dataset | uspto-grants-1978_08 |
|---|
| ORD ID | ord-701ac2c8fe174c4bac26b3d49a8ed91a |
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| Source note | uspto-grants-1978_08 |
|---|
