HuagongsheHuagongshe Chemistry Print Report · For research reference only
Carbamic acid, ethyl ester → Phthalic Anhydride
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Carbamic acid, ethyl ester | HCID 5641 | — |
| Reactant | Ethylene Oxide | HCID 6354 | — |
| Reactant | Propylene Oxide | HCID 6378 | — |
| Reactant | Potassium Hydroxide | HCID 14797 | — |
| Solvent | Ethylene Glycol | HCID 174 | — |
| Solvent | Glycerol | HCID 753 | — |
| Product | Phthalic Anhydride | HCID 6811 | — |
Reaction Steps
100 parts by weight of polymeric MDI (Sumidur 44V20 (NCO%; 31.5) manufactured by Sumitomo Bayer Urethane Co., Ltd.), 8 parts by weight of a polyether polyol with a hydroxy value of 56 mg KOH/g having propylene oxide and ethylene oxide added to glycerin, and 8 parts by weight of a polyester polyol with a hydroxy value of 56 mg KOH/g formed from phthalic anhydride and ethylene glycol were reacted under the condition of 80 deg. C. for 2 hours to prepare a polymeric MDI prepolymer (prepolymer A) having an isocyanate group content of 26% which was used as the isocyanate component.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06638989B2 |
| Source dataset | uspto-grants-2003_10 |
| ORD ID | ord-a673c8c37b5e49e1a6d5f768d1166cda |
| Source note | uspto-grants-2003_10 |