Isocyanate compositions for blown polyurethane foams
US6590005B2 · kind B2 · utility
15Cited by
8References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2002 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Jul 24, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Rigid polyurethane foams are prepared from an isocyanate composition containing diphenylmethane diisocyanate, three ring oligomers of polyphenylene polymethylene polyisocyanate and higher homologues of polyphenylene polymethylene polyisocyanate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.