Curable resins and curing agents therefor

A curable resin or curing agent therefor, which comprises an adjustable structural unit having a stable chain-like arrangement which is adjustable to a stable ring-like arrangement, wherein the ring-like arrangement comprises the constituents of the chain-like arrangement with two terminal constitue...

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Bibliographische Detailangaben
1. Verfasser:	JOHN LESLIE CAWSE
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	A curable resin or curing agent therefor, which comprises an adjustable structural unit having a stable chain-like arrangement which is adjustable to a stable ring-like arrangement, wherein the ring-like arrangement comprises the constituents of the chain-like arrangement with two terminal constituents exhibiting an attractive chemical interaction, and is adjustable back from the ring-like arrangement to the chain-like arrangement by separation of the two terminal constituents. Preferred curing agents are of the form of curing agents A-F and may be used in the curing of epoxy resins. Suitable epoxy resins are may be formed from the diglycidyl ethers of Bisphenols A and F, the triglycidyl derivative of m-aminophenol and TGDDM (N,N,N',N'-tetraglycidyl-4,4'-diaminodiphenylmethane). Prepregs (pre-impregnated composite fibres) comprising a fibre-structure impregnated with the curable resin are also outlined.