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
A 30%-urea aqueous solution (11) at 15.2 kg/h and formalin (37%-formaldehyde aqueous solution adjusted to pH 8.0 by addition of 20%-triethanolamine aqueous solution) (12) at 11.1 kg/h were supplied to a resin prepolymer reaction vessel (13), and were caused to reside therein for 70 min. at 70° C. under stirring to continuously produce 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-d7001f9b020b48748e47ff1ee6e6edb5 |
|---|
| Source note | uspto-grants-2002_11 |
|---|
