Lightweight sealant having improved peel strength
US5663219A · kind A · utility
21Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1995 |
| Grant date | Sep 2, 1997 |
| Priority date | — |
| Expiry date | Sep 25, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L81/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The peel strength of lightweight, liquid polysulfide-based sealants for aircraft is improved by the addition of an epoxy-terminated liquid polysulfide to the liquid polysulfide. The lightweight sealants have a specific gravity of from about 1 to about 1.3 and the amount of epoxide terminated polysulfide is from about 0.4 to about 5% of the weight of the polysulfide present in the sealant. Fillers having a specific gravity of from about 0.1 to about 2.2 are used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.