Very fine cell polyurethane foams and processes for producing the same
US6136878A · kind A · utility
11Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1997 |
| Grant date | Oct 24, 2000 |
| Priority date | — |
| Expiry date | Feb 18, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/0083
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to very fine cell flexible polyurethane foams having at least 87 pores per linear inch (as measured by pressure drop techniques) wherein at least 65% of the isocyanate equivalents of said polyurethane are obtained from MDI. The invention also relates to processes for preparing the very fine cell polyurethane foams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.