Low density, water-blown, rigid polyurethane foams having good physical properties and improved initial surface friability
US5260347A · kind A · utility
9Cited by
1References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1992 |
| Grant date | Nov 9, 1993 |
| Priority date | — |
| Expiry date | Dec 4, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/0083
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to low density, water-blown, rigid foams with good physical properties made with blends of toluenediamine (TDA)/glycerine initiated polyols. The foams made using these blends exhibit no initial surface friability. Further, it was found that specific blends of lower hydroxyl number polyols could be used, thereby reducing isocyanate consumption without affecting the physical properties of the foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.