| 摘要 |
Polymeric allyl-type alcohols are made by heating a polymeric carboxylic acid ester of an allyl-type alcohol with a monohydric alcohol and separating the resulting carboxylic acid ester of the monohydric alcohol from the polymeric allyl-type alcohol. Polymeric esters specified are polyallyl formate, acetate, propionate, butyrate, isobutyrate, ethoxyformate, benzoate, phthalate, maleate, a -hydroxyisobutyrate, acetylglycollate, stearate, succinate, glutarate, malonate, phenoxyformate and a -ethoxyacetate; poly-b -methylallyl acetate and methoxyformate; poly-a -methylallyl formate; poly-a -phenylallyl acetate; poly-b -phenylallyl isopropoxyformate; poly-b -chlorallyl acetate; poly-b -ethylallyl acetate; poly-b -methoxyallyl formate, poly di-b -methylallyl adipate; poly-b -cyclohexylallyl acetate. They may be prepared by heating the monomers in the presence of benzoyl peroxide at 65 DEG C. The monohydric alcohol may be methyl, ethyl, n-propyl, isopropyl, sec.-butyl, n-butyl, isobutyl, amyl, hexyl, octyl, allyl, b -methylallyl, b -phenylallyl, propargyl and crotyl alcohols, cyclohexanol, methylcyclohexanol, cyclopentanol and methyl vinyl carbinol. The reaction may be carried out in the presence of catalysts, e.g. the alcoholates of lithium, sodium, potassium, magnesium, calcium, barium or aluminium. These catalysts may be removed from the product by conversion to an insoluble salt, e.g. bicarbonate or sulphate, by treatment with carbon dioxide or sulphuric acid respectively. The crude product is purified by dissolving it in water or methyl, ethyl or isopropyl alcohols and treating with a non-solvent, e.g. acetone, methyl ethyl ketone, benzene, toluene, hexane, heptane, naphtha, ethyl or isopropyl ethers. Preferably, the polyallyl type alcohol is separated from the reaction mixture by extraction with a solvent, volatilization, vaporization, or distillation, which may be azeotropic. The products may be used as adhesives, sizes, lubricants and impregnating agents for paper. They may be reacted with polycarboxylic acids or anhydrides to form alkyd resins, with unsaturated acids of drying oils to form drying oils, with aldehydes to form acetals or with nitric acid to form explosive nitrates. Specification 566,344 and U.S.A. Specification 2,164,188 are referred to. |
