| 摘要 |
<p>A curable composition comprises a polyepoxide having an epoxy equivalency of greater than one and a glycol polyamine of the formula <FORM:0988632/C3/1> or a polyol polyamine of the formula <FORM:0988632/C3/2> where n is an integer of 2 to 10 inclusive, x is an integer of 10 to 100 inclusive and the sum (a+b+c) has a value of 30 to 100 inclusive, said polyamine being present in said composition in an amount sufficient to cure said composition to an infusible product. The polyamines are made by cyanoalkylating polyols of the formulae HO(CnH2nO)xH and <FORM:0988632/C3/3> respectively, the cyanoalkylated products then being hydrogenated, specified polyols being poly(ethylene glycol), poly(diethylene glycol), poly(1:2-propylene glycol), poly(1:3-propylene glycol), poly(1:4-butylene glycol) and poly(1:2:3-propane triol). Specified polyepoxides are the polyglycidyl ethers of polyhydric phenols and alcohols, e.g. resorcinol, pyrogallol, bis-phenols, phenol-aldehyde condensates, dihydroxy diphenyl sulphone, ethylene glycol, propane diols, butane diols, glycerol and hexane triols; polyglycidyl esters of polycarboxylic acids, e.g. adipic and phthalic acid, reaction products of epichlorhydrin with aromatic amines or aminophenols, e.g. aniline, 2:6-dimethyl aniline, m-chloraniline, p-toluidine, p-aminodiphenyl, m-phenylene diamine, p-phenylene diamine, 4:41-diaminodiphenylmethane, p-aminophenol, 5-amino-1-n-naphthol, 4 - amino - resorcinol, 2 - methyl - 4-aminophenol and 2 - chloro - 4 - aminophenol; bis - (2:3 - epoxycylopentyl)ether; 3:4 - epoxy-6 - methylcyclohexylmethyl - 3:4 - epoxy - 6-methyl cyclohexane carboxylate; vinyl cyclohexene dioxide and dicyclopentadiene dioxide. Liquid diluents and solvents of which many are specified may be used in forming the mixtures, as may reactive diluents containing a single epoxy group, e.g. butyl, allyl and phenyl glycidyl ethers. Conventional hardening agents of which many are specified may also be present in the mixtures. Examples (1) to (7), (9) and (10) disclose compositions of a diglycidyl ether of 2:2 - bis(p - hydroxyphenyl)propane, di-(3-aminopropyl)ether of poly(propylene glycol) and:-(1) m-phenylene diamine and 4:41-methylene dianiline; (2) m-phenylene diamine; (3) 4:4-methylene dianiline; (4) hexahydrophthalic anhydride; (5) methyl-bicyclo-(2:2:1)-hept-5-ene-2:3-dicarboxylic anhydride; and (6) a phenol-formaldehyde novolac; (9) 1-hydroxy-2-amino ethane and (10) tris-(3-aminopropyl) ether of poly(oxypropyl glycerol). Example (8) describes a composition comprising bis-(2:3-epoxy cyclopentyl)ether, m-phenylene diamine, 4:41-methylene dianiline, a diglycidyl ether of 2:2-bis(p-hydroxyphenyl)propane and di-(3-aminopropyl(ether of poly(propylene glycol). Specifications 666,732, 788,556, 792,187, 855,025,865,314 and 880,446 are referred to.</p> |
