Fluorocarbon polymer compositions
US4595718A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1985 |
| Grant date | Jun 17, 1986 |
| Priority date | — |
| Expiry date | Jul 19, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L63/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The specification describes and claims substantially odourless compositions having a pot life after mixing acceptable for use in manufacture and repair of aircraft and which cure at room temperature to provide a mass of heat and aircraft fuel resistant elastomeric material. The compositions comprise components which are at least substantially free of thiol and comprise a fluorocarbon copolymer, organic solvent, metallic oxide, epoxy compound and as crosslinking agent a diamino silane according to the general formula (i) namely ##STR1## Examples disclose compositions formed from admixture of two components comprising Viton A, methyl ethyl ketone, magnesium oxide, Epikote 828 and N-beta(aminoethyl) gamma-aminopropyl-trimethoxysilane. The compositions are suitable for forming coatings, adhesive bonds and seals, to metal parts of titanium and aluminium alloys which have resistance to aviation fuels and high temperatures. A primer composition for promoting adhesion especially to titanium alloys is described and comprises organic material having isocyanate and hydrolysable silane groups available for reaction e.g. a mixture of polyfunctional isocyanate and a hydrolysable silane of the ge…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.