Cellular, molded polyurethane parts, process for their preparation by thermoforming of polyester-urethane foam and their use
US4508774A · kind A · utility
45Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1984 |
| Grant date | Apr 2, 1985 |
| Priority date | — |
| Expiry date | Mar 12, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249993
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A cellular polyurethane having a density of from 15 Kg/m.sup.3 to 400 Kg/m.sup.3 obtained by means of thermoforming, in a forming tool, at a compression factor of from 1 to 10 and temperatures of from 140.degree. C. to 200.degree. C., polyester-urethane foams having a density of from 15 Kg/m.sup.3 to 40 Kg/m.sup.3 which are based on aromatic polyisocyanates and polyester polyols. The resulting polyurethane shaped objects are suitable for use as self-supporting trim panels, headliners, engine compartment covers, or instrument panels in the automotive, aircraft or railway industries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.