Microcellular polyurethane vibration isolator
US4302552A · kind A · utility
15Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1980 |
| Grant date | Nov 24, 1981 |
| Priority date | — |
| Expiry date | Jul 1, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/914
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A vibration isolator consisting essentially of a microcellular polyurethane elastomer having a bulk density of 0.3-0.9 g/cm.sup.3, said polyurethane elastomer obtained by reacting in the presence of water as the blowing agent (a) an organic polyisocyanate, (b) a polyether polyol having an average number of functional groups of 2.5-3.5 and a number average molecular weight of 4500-8500, and (c) a chain extender, in such a ratio that the NCO index is 90-110 and the concentration of the chain extender, based on the total weight of the three components (a), (b) and (c), is (0.4-2.0).times.10.sup.-3 equivalent/gram.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.