| 摘要 |
Elastomeric chlorosulphonated polyethylenes are cured in the presence of a composition comprising 0.005-10% of at least one non-volatile (i.e. of boiling point above 300 DEG C.) inorganic nitrite or organic nitro compound, organic nitroso compound or organic isonitroso compound having at least one nitro, nitroso or isonitroso group directly attached to a C atom, at least one aliphatic or cycloaliphatic monocarboxylic acid of molecular weight above 200 and optionally at least one oxide, hydroxide or weak acid salt of a polyvalent metal. An inert filler, e.g. 30-70%, may also be used, e.g. alkaline earth metal sulphates, silicates such as clays, ground mica, talc, asbestine, precipitated calcium silicate, silica, graphite and carbon black. The nitrogen compound may be a metal, e.g. Na, nitrite, dinitrobenzene, dinitrotoluene, dinitrobenzoic acid, dinitrosobenzene, a nitrosophenol, a nitrosoamine, N-nitroso-p-nitroso-N-methyl-aniline, benzoquinone dioxime or dibenzoyl benzoquinone dioxime. The acid, e.g. 20-60%, may be a hydrogenated rosin, lauric, palmitic, stearic, behenic, abietic, or di- or tetra-hydro-abietic. The curing temperature may be 125-175 DEG C. The metal compound may be PbO, TiO2 or a salt of stearic, abietic, adipic, acetic, propionic, oleic, benzoic, naphthenic, palmitic, sulphurous or carbonic acids. Specification 591,058 is referred to. |
