HuagongsheHuagongshe Chemistry Print Report · For research reference only
Formaldehyde → Urea
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Formaldehyde | HCID 712 | — |
| Reactant | Urea | HCID 1176 | — |
| Product | Urea | HCID 1176 | — |
| Product | Urea formaldehyde foam | HCID 62705 | — |
Reaction Steps
8.9 kg of urea and 20.5 kg of formalin (37%-formaldehyde aqueous solution adjusted to pH 8.5 with triethanolamine) were mixed under stirring and allowed to react with each other for 60 min. at 70° C. to form a urea resin prepolymer (formaldehyde/urea=1.8 (by mol)) liquid.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06486099B2 |
| Source dataset | uspto-grants-2002_11 |
| ORD ID | ord-c538a986c1e74550b5f5796ca3a626fc |
| Source note | uspto-grants-2002_11 |