| 摘要 |
1,125,386. Hexamethylene oxide and polymers therefrom. BADISCHE ANILIN- & SODAFABKIK A.G. 5 Nov., 1965 [6 Nov., 1964], No. 46954/65. Heading C2C. [Also in Division C3] Polymers and copolymers of hexamethylene oxide are made by polymerizing hexamethylene oxide, with or without other comonomers, in the presence of one or more Friedel-Crafts catalysts or Lewis acids in an amount of from 0À01-10 mole per cent with reference to the monomer(s) at from about - 40‹ to 150‹ C. in substance or in the presence of inert solvents. Comonomers to be used are cyclic ethers, e.g. ethylene, propylene and styrene oxides, epichlorhydrin, oxacyclobutane, di- (chloromethyl)-oxacyclobutane, tetrahydrofuran and allyl glycidyl ether, and cyclic acetals, e.g. dioxolane, trioxane, butanediolformal, and diethylene glycolformal. There may also be present in the reaction mixture regulators containing active hydrogen, such as alcohols, glycols, amines, mercaptans and water. The examples describe the preparation of polymers and copolymers from hexamethylene oxide alone and with epichlorhydrin, ethylene oxide alone and with epichlorhydrin and ethylene oxide with epichlorhydrin and butane diol-(1,4). Hexamethylene oxide (oxacycloheptane) is made by the action of potassium hydroxide on hexamethylene bromohydrin and forms an addition compound with boron trifluoride. |
