# polyurethane

> polymer composed of a chain of organic units joined by carbamate (urethane) links

**Wikidata**: [Q146322](https://www.wikidata.org/wiki/Q146322)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Polyurethane)  
**Source**: https://4ort.xyz/entity/polyurethane


## References

1. [ChemIDplus](https://chem.nlm.nih.gov/chemidplus/rn/68400-67-9)
2. 1,3-Butanediol, polymer with α-butyl-ω-hydroxypoly[oxy(methyl-1,2-ethanediyl)] and 1,3-diisocyanatomethylbenzene. ECHA Substance Infocard database
3. Integrated Authority File
4. Freebase Data Dumps. 2013
5. YSO-Wikidata mapping project
6. UMLS 2023
7. Quora
8. National Library of Israel
9. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)