Rigid polyurethane foams
US6423755B1 · kind B1 · utility
24Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2000 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Feb 25, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyurethane foams containing a syntactic phase and a cellular, non-syntactic phase are useful as reinforcing foams, such as in automotive applications. The foams are conveniently made in the reaction of a high viscosity isocyanate-reactive component and a high-viscosity polyisocyanate component, at least one of which contains a plurality of hollow microspheres.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.