Method of making polymer seals
US5073321A · kind A · utility
6Cited by
12References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 2, 1989 |
| Grant date | Dec 17, 1991 |
| Priority date | — |
| Expiry date | May 2, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/77
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of manufacturing polymer seals consisting of bonding together a combination of cured pre-polymers to form a single multi-layered seal of varying hardness urethane with at least one pre-polymer being a polyester based pre-polymer and at least one pre-polymer being a polyether-based prepolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.