摘要:
A poly-N-alkyliminoalane containing repeated imine units of the type ##STR1## wherein R is an aliphatic radical, is prepared by reacting an alane of an alkali or alkali-earth metal with a primary amine in the presence of a hydrocarbon solvent.
摘要:
A poly(-N-alkyliminoalane) having the composition (HAlNR).sub.n, wherein R represents an aliphatic, cycloaliphatic, aromatic or alkyl-aromatic group, and n is a number in the range of 3 to 50, is prepared by directly reacting metallic aluminum with a primary amine having the formula H.sub.2 NR, wherein R has the meaning given above, in the presence of hydrogen at a pressure in the range of from 1 to 1000 kg/cm.sup.2 and at least a stoichiometric quantity of aluminum, at a temperature in the range of from room temperature to the dissociation temperature of the end product, and in the presence of a promoter such as a small quantity of the poly(-N-alkyliminoalane) constituting the end product of said reaction.
摘要翻译:具有组成(HA1NR)n的聚(N-烷基亚氨基亚氨烷),其中R表示脂族,脂环族,芳族或烷基 - 芳族基团,n为3〜50的数,是通过使金属 铝,其具有式H2NR的伯胺,其中R具有上述含义,在氢气存在下,在1至1000kg / cm 2的压力和至少化学计量的铝的存在下,在 在最终产物的室温至解离温度的范围内,以及在构成所述反应的最终产物的少量聚(N-烷基亚氨基亚氨烷)等促进剂存在下进行。
摘要:
A single stage process is provided for the direct synthesis of mixed polyimino derivatives of aluminum and alkaline earth metals consisting of reacting aluminum, an amine, the alkaline earth metal or hydride or amide derivative thereof, in the presence of hydrogen, the reaction being promoted by an activator in either hydrocarbon or ether solvents.
摘要:
A single stage process is provided for the direct synthesis of mixed polyimino derivatives of aluminium and alkaline earth metals consisting of reacting aluminium, an amine, the alkaline earth metal or hydride or amide derivative thereof, in the presence of hydrogen, the reaction being promoted by an activator in either hydrocarbon or ether solvents.
摘要:
Compounds having at least one olefinic unsaturation (e.g. isoprene) are polymerized in the presence of a catalyst system consisting of a transition metal compound such as TiCl.sub.4 and an aluminum hydride derivative which is either (a) an oligomer N-alkylaminoalane of the type: ##STR1## or (b) an oligomer derivative having the general formula:(XAlNR).sub.x (XYAl).sub.y (NHR).sub.y.
摘要:
Novel organic aluminum imides, highly resistant to oxidation and moisture and useful for polymerization and alkylation reactions, are prepared by reacting a poly(N-alkyliminoalane) with an aluminum alkyl, or with a halogen acid and then with an alkyl derivative of an alkali metal.
摘要:
A novel catalytic system is disclosed which is especially adapted for the polymerization and the copolymerization of aliphatic conjugated diolefines, the system comprising an organic compound of aluminum, a Lewis acid containing at least one halogen, and an organic compound of a lanthanide metal. The catalyst system has outstanding and hitherto unparalleled activity. The method of preparation of the catalytic system is also described in detail.
摘要:
A process for the stereospecific polymerization of olefins is described, wherein the selected monomer is homopolymerized, or the selected monomers are copolymerized, by reacting the selected monomer or monomers in the presence of a catalyst consisting of an uranium .pi. - allyl compound represented by one of the formulae: ##EQU1## in which R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5, the same or different, may be hydrogen atoms, alkyl radicals having from 1 to 10 carbon atoms, aryl radicals having from 6 to 10 carbon atoms, cycloalkyl radicals having from 4 to 10 carbon atoms, and alkylaryl radicals; the dotted line indicates the possible delocalization of the valence electrons; X is an anion selected from among Cl.sup.-, Br.sup.- and I.sup.-; and n is an integer ranging from 1 to 3; and, optionally, a co-catalyst which is a Lewis acid, or a complex thereof with an ether, a tertiary amine or a phosphine.
摘要:
A new uranium allyl compound, represented by the formula: ##EQU1## WHEREIN R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5, which may be the same or different, are members of the group consisting of H, alkyl radicals containing from 1 to 10 C atoms, aryl radicals containing from 6 to 10 C atoms, cycloalkyl radicals containing from 4 to 10 C atoms, and alkyl aryl radicals containing from 7 to 10 C atoms, the dotted line linking the three carbon atoms indicates possible delocalization of the valence electrons of the double bond, X is an anion selected from Cl.sup.-, Br.sup.- and I.sup.- and n is an integer ranging from 1 to 3. The members of that group of compounds are useful, respectively, as catalysts in the stereospecific polymerization of diolefins and may be prepared by reacting a compound represented by the formula: ##EQU2## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 and the dotted line have the significance given above, with a compound represented by the formulae HX or X.sub.2, wherein X has the significance given above.
摘要翻译:由下式表示的新的铀烯丙基化合物:R2R3R4 ||| R1-C-C- C-R5UXn4-n可以相同或不同的R1,R2,R3,R4和R5是成员 由H组成的组,含有1〜10个C原子的烷基,含有6〜10个C原子的芳基,含有4〜10个C原子的环烷基,以及含有7〜10个C原子的烷基芳基, 连接三个碳原子的虚线表示双键的价电子可能的离域化,X是选自Cl - ,Br - 和I - 的阴离子,n是1〜3的整数。 该组化合物的成员分别可用作二烯烃的立体有择聚合中的催化剂,并且可以通过使由下式表示的化合物:R 2 R 3 R 4 || R 1 -C-C-C-R 5 U 4 R2,R3,R4和R5以及虚线具有上述含义,与式HX或X2表示的化合物, 其中X具有上述含义。
摘要:
An olefin or diolefin is polymerized, and mixtures thereof are copolymerized, in the presence of a catalyst system consisting of:A. a uranium compound consisting of U(OCH.sub.3).sub.4, U(OCH.sub.3).sub.3 Cl, U(OC.sub.4 H.sub.9).sub.4, U(OC.sub.8 H.sub.17).sub.4, U [N(C.sub.2 H.sub.5).sub.2 ].sub.4, U [N(C.sub.2 H.sub.5).sub.2 ].sub.3 Br, U(OCH.sub.3).sub.5, U(O-i-C.sub.4 H.sub.9).sub.5 ;b. a reducing compound of a metal belonging to the 2nd or 3rd group of the periodic system, selected from the hydrides, mixed hydrides and alkyl derivatives thereof;C. a Lewis acid selected from AlBr.sub.3, AlI.sub.3, AlCl.sub.3, AlCl.sub.3.OEt.sub.2, Al R Cl.sub.2, B Cl.sub.3 and TiCl.sub.4, wherein R is a hydrocarbon radical.