Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1985-07-19
1986-06-17
Griffin, Ronald W.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
427399, 525101, 525121, C08F 800, B05D 500
Patent
active
045957185
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 general formula (ii) namely ##STR2## A preferred example primer comprises liquid MDI and gamma-glycidoxy propyl-trimethoxy-silane.
REFERENCES:
patent: 4338376 (1982-07-01), Kritzler
patent: 4369279 (1983-01-01), Emerick
Lee and Neville; "Handbook of Epoxy Resins", pp. 13-15 and 17-22; McGraw-Hill, 1967, New York, N.Y., TP1180E6, L4.
Allen Christopher M.
Hincklieff Ian R.
Griffin Ronald W.
Szatkowski Thomas S.
USM Corporation
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