C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
117/143, 400/411
C08K 3/22 (2006.01) C08K 5/54 (2006.01) C08K 5/544 (2006.01) C08L 27/12 (2006.01) C09D 127/12 (2006.01) C08L 63/00 (2006.01)
Patent
CA 1182597
FLUOROCARBON POLYMER COMPOSITIONS INCLUDING A METALLIC OXIDE, AN EPOXY RESIN AND A DIAMINO SILANE CROSSLINKING AGENT Abstract of the Disclosure 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 com- ponents 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 Image 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 adhe- sion especially to titanium alloys is described and comprises organic material having isocyanate and hydro- lysable silane groups available for reaction e.g. a mixture of polyfunctional isocyanate and a hydrolysable silane of the general formula (ii) namely Image A preferred example primer comprises liquid MDI and gamma-glycidoxy propyl-trimethoxy-silane.
390625
Allen Christopher M.
Hincklieff Ian R.
Allen Christopher M.
Hincklieff Ian R.
Swabey Ogilvy Renault
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