Abstract:
The present invention provides an olefin coordination polymerization catalyst and use thereof. The composition of the raw materials of the olefin coordination polymerization catalyst comprises: a main catalyst and a cocatalyst, wherein a molar ratio of the transition metal halide in the main catalyst to the cocatalyst is 1:10-500; and the composition of the raw materials of the main catalyst comprises a magnesium compound, a transition metal halide, an alcohol having 2 to 15 carbon atoms, and a star-shaped organosiloxane compound in a molar ratio of 1:1-40:0.01-10:0.001-10; and the cocatalyst comprises an organoaluminum compound. The above olefin coordination polymerization catalyst is used as a catalyst for ethylene polymerization, propylene polymerization, and copolymerization of ethylene or propylene with an α-olefin. The olefin polymerization catalyst of the present invention has good catalytic activity.
Abstract:
A composition contains (A) a hydrosilylation reaction catalyst and (B) an aliphatically unsaturated compound having an average, per molecule, of one or more aliphatically unsaturated organic groups capable of undergoing hydrosilylation reaction. The composition is capable of reacting via hydrosilylation reaction to form a reaction product, such as a silane, a gum, a gel, a rubber, or a resin. Ingredient (A) contains an iron-organosilicon ligand complex that can be prepared by reacting an iron carbonyl compound and an organosilicon ligand.
Abstract:
Process for the preparation of a solid olefin polymerization catalyst system, comprising an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC 2007) in the form of solid particles comprising the steps of I) generating an emulsion by dispersing a liquid clathrate in a solvent (S) wherein (i) the solvent (S) constitutes the continuous phase of the emulsion and comprises a nonreactive fluorinated synthetic oil having a viscosity at 20° C. according to ASTM D445 of at least 10 cSt up to 2000 cSt (ii) the liquid clathrate constitutes in form of droplets the dispersed phase of the emulsion, II) solidifying said dispersed phase to convert said droplets to solid particles and III) optionally recovering said particles to obtain said catalyst system, wherein the liquid clathrate comprises (a) a lattice being the reaction product of a1) a transition metal compound of formula (I) LmRnTXq wherein “T” is a transition metal of anyone of the groups 3 to 10 of the periodic table (IUPAC2007), preferably a transition metal of anyone of the groups 4 to 6 of the periodic table (IUPAC2007), more preferably titanium (Ti), zirconium (Zr) or hafnium (Hf), i.e. zirconium (Zr) or hafnium (Hf), each “X” is independently a monovalent s-ligand, each “L” is independently an organic ligand which coordinates to the transition metal (T), “R” is a bridging group linking said organic ligands (L), “m” is 2 or 3, preferably 2, “n” is 0, 1 or 2, preferably 1, “q” is 1, 2 or 3, preferably 2, m+q is equal to the valency of the transition metal (T), a2) a cocatalyst comprising aluminoxane a3) a compound being effective to form the lattice with the transition metal compound and/or the aluminoxane and b) a hydrocarbon solvent (HS).
Abstract:
A silicone composition is described that includes components having SiH/SiOH groupings and that can be polymerized/cross-linked by a dehydrogenative condensation reaction in the presence of a non-metal tri- or tetrasubstituted non-silylated guanidine catalyst and requiring a low activation temperature.
Abstract:
The present invention provides a process for hydrogenation of a conjugated diene polymer comprising hydrogenating said polymer in the presence of hydrogen and a hydrogenation catalyst composition, wherein the catalyst composition comprising a titanium compound (A), a silyl hydride (B) selected from the group having a Si—H group and consisting of a monomeric silyl hydride, a polymeric silyl hydride, and a cyclic silyl hydride; and a compound (C), and conducting the hydrogenation in a middle to larger sized reactor having a capacity of 25 liters, with a temperature of 50° C. to 150° C., and a hydrogen pressure of 1 kg/cm2 to 20 kg/cm2.
Abstract translation:本发明提供一种共轭二烯聚合物的氢化方法,包括在氢气和氢化催化剂组合物的存在下氢化所述聚合物,其中催化剂组合物包含钛化合物(A),甲硅烷基氢化物(B) 具有Si-H基团并由单体甲硅烷基氢化物,聚合甲硅烷基氢化物和环状甲硅烷基氢化物组成; 和化合物(C),并且在50〜150℃的温度和1kg / cm 2〜20℃的氢气压力下,在容量为25升的中等尺寸的较大尺寸的反应器中进行氢化 kg / cm2。
Abstract:
The present invention provides a catalyst composition for hydrogenation comprising: (1) a titanium compound (A) represented by the following formula (a): (2) a silyl hydride (B); and (3) a compound (C) represented by the following formula (e): The catalyst composition for hydrogenation can maintain activity longer and improve hydrogenation conversion of the conjugated diene polymers, particularly of the trans structure. The conjugated diene polymers produced according to the present invention can further perform good thermal stability and odorless.
Abstract:
The invention relates to ionic compounds in which the anionic load has been delocalized. A compound disclosed by the invention includes an anionic portion combined with at least one cationic portion Mm+ in sufficient numbers to ensure overall electronic neutrality; the compound is further comprised of M as a hydroxonium, a nitrosonium NO+, an ammonium —NH4+, a metallic cation with the valence m, an organic cation with the valence m, or an organometallic cation with the valence m. The anionic load is carried by a pentacyclical nucleus of tetrazapentalene derivative bearing electroattractive substituents. The compounds can be used notably for ionic conducting materials, electronic conducting materials, colorant, and the catalysis of various chemical reactions.
Abstract translation:本发明涉及其中阴离子负荷已经离域的离子化合物。 本发明公开的化合物包括足够数量的与至少一个阳离子部分M + H +结合的阴离子部分以确保整体电子中性; 该化合物进一步包含作为氢氧化物的M,亚硝酸铵,铵,铵,铵,价铵的金属阳离子 m,m价的有机阳离子或m价的有机金属阳离子。 阴离子负载由带有电吸引取代基的四嗪基衍生物的五环核承载。 这些化合物可以特别用于离子导电材料,电子导电材料,着色剂和各种化学反应的催化。
Abstract:
A polymerization catalyst system and process, which utilizes a Group 14 and Group 16 containing oil or amorphous solid to solubilize polymerization catalyst components including metallocenes and Group 15 containing polymerization catalysts, is disclosed.
Abstract:
Process for the production of organic compounds in a membrane reactor. Inorganic membranes composed of an inorganic backing layer and an inorganic interlayer are used in the membrane reactor. The inorganic interlayer may be modified with organic groups.
Abstract:
The invention relates to particles comprises of organopolysiloxane microgel particles having a diameter of 5 to 200 nm and organo-aluminum compounds immobilized thereon. The particles can be used as cocatalysts together with metal compounds of the 4, 5, 6 and 8-10 sub-groups of the periodic table for oligomerization, cyclization of polymerization of olefins.