| 摘要 |
1,187,233. Trioxan polymerization. CELANESE CORP. 31 Aug., 1967 [16 Sept., 1966], No. 39869/67. Heading C3P. [Also in Division C5] Trioxan is homo or copolymerized in the presence of a catalyst of the formula wherein Ar<SP>1</SP>, Ar<SP>2</SP>, Ar<SP>3</SP>, Ar<SP>4</SP> and Ar<SP>5</SP> are aryl radicals, m is 0 or 1, M is a metal or metalloid other than boron or arsenic, or phosphorus, v is the valency of the element M, X is a halogen atom and is Br, Cl, or I when M is antimony, and n is v plus 1. Otherwise conventional polymerization and purification techniques are employed. Hexa- and tetrahalides of antimony, phosphorus, and bismuth are specified as the anions, while triphenyl methyl, pentaphenylethyl, tris - (biphenylyl) methyl, (monophenyl) (dinaphthyl) methyl, trinaphthylmethyl, and mono - (biphenylyl) (diphenyl) methyl are specified as cations. The examples all relate to the use of triphenyl methyl antimony hexachloride as catalysts in the homopolymerization of trioxan or copolymerization with ethylene oxide, tetrahydrofuran, 1,3- dioxolan, 1,4 - dioxan, trimethylene oxide, propylene oxide and butadiene dioxide, pentamethylene oxide, 1,2 and 1,3-butylene oxides, ethylene oxide and vinyl cyclohexene dioxide, tetrahydrofuran, or the diacetal of malonaldehyde and ethylene glycol, 1,3-dioxolan and vinyl cyclohexene dioxide, ethylene oxide and sorbitol triformal, pentaerythritol diformal, butadiene dioxide, resorcinol diglycidyl ether, or the triepoxide of the triallyl ether of trimethylolpropane. |
