| 摘要 |
1,246,591. Oligomerisation catalysts. AGENCY OF INDUSTRIAL SCIENCE & TECHNOLOGY ASAHI KASEI KOGYO K.K. 24 March, 1970 [24 March, 1969], No. 14144/70. Heading B1E. [Also in Division C5] A catalyst used for trimerising butadiene-1,3 comprises: (a) TiXn(OCH 2 R) 4-n or TiXn(OAr) 4-n wherein X = Cl, Br or I; R = H or C 1 -C 5 alkyl Ar = aryl and n = 0, 1, 2 or 3. (b) an organoaluminium halide; and (c) an acid amide, sulphoride, amine oxide or nitrone. Preferred catalyst components are: (a) Ti(OnBu) 2 , TiCl 2 (OnBu) 2 Ti(OPh) 4 , Ti(OisoBu) 4 , TiCl 2 (3-methylbutoxy) 2 , Ti(OMe) 4 and TiBr, On hexyl) 3 ; (b) Et 3 Al 2 Cl 3 , Et 2 AlCl, EtAlCl 2 , Me 3 Al 2 Cl 3 and Me 2 AlCl (c) dimethyl-, diphenyl- and dibenzyl-sulphoxides, trimethyl- and triethyl-amineoxides, N, N-diethyl acetamide, dimethylformamide and n propyl-N-cyclohexylketoxime. |
