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Catalyst for hydrogenation of unsaturated compounds Invention relates to a homogeneous catalyst for hydrogenation of unsaturated compounds. The catalyst has the general formula: (R1Cp)(R2Cp)Ti(PhOR3)2, where Cp relates to cyclopentadienyl; R1 and R2 are identical or different alkyl groups (C3-C10); Ph relates to a phenyl group, OR3 is an alkoxyl group (C1-C4). The invention also discloses use of the catalyst for hydrogenating a polymer containing unsaturated bonds, and a method of hydrogenating polymers containing unsaturated bonds. |
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Invention is aimed at metallocene compound, which can ensure process of polymerization with obtaining olefin polymer or copolymer with high polymerization activity and stability, which are preserved for long time, and catalyst composition, which includes it, and method of olefin polymerization, applying it. Metallocene compound is described by the following formula (4HInd)(Cp')MX2, where 4Hind represents group, that has tetrahydroindenyl core, Cp' represents indenyl group, 4HInd is non-substituted, and Cp' is non-substituted or substituted with one or several substituents, and substituents are identical to each other or different from each other and represent radical, selected from group, consisting of alkyl or aryl group, and M represents transition metal from group IV of periodic table, and X are identical to each other or different from each other and represent halogen atoms. |
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Invention relates to a transition metal compound of chemical formula (1): [Chemical formula 1] In the present formula, M is Group 4 transition; Cp is a cyclopentadienyl ring bonded with M on a η5-type, where the cyclopentadienyl ring can further be substituted with (C1-C20)alkyl or (C6-C30)aryl; Ar is (C6-C14)arylene; R11 and R12 independently denote a hydrogen atom or (C1-C10)alkyl; n is an integer from 0 to 2; R is (C1-C10)alkyl or (C1-C10)alkoxy; and when n equals 2, individual substitutes R can be identical or different; X1 and X2 independently denotes a halogen atom, (C1-C20)alkyl, (C6-C30)aryl(C1-C20)alkyl or (C6-C30)aryloxy; alkyl, arylalkyl, alkoxy, aryloxy groups, radicals Rn, X1 and X2 and arylene groups Ar can be independently substituted with one or more substitutes selected from a group consisting of (C1-C20)alkyl, (C6-C30)aryl and (C1-C20)alkoxy. The invention also discloses a catalyst composition, a method of producing homopolymers of ethylene or copolymers of ethylene with α-olefin, a homopolymer of ethylene or a copolymer of ethylene with α-olefin. |
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Semi-metallocene containing catalyst compositions and polymerisation products obtained using same Disclosed are polymerisation catalyst compositions which contain a product of contacting a hybrid semi-metallocene compound with a ligand which contains a heteroatom bonded with a transition metal atom with an activator. The invention also discloses method for polymerisation of an olefin in the presence of said catalyst composition and novel compounds which are part of a catalyst system. The metallocene compound has the formula: , where: M is Zr, Hf or Ti; X1 and X2 are independently a halide or a substituted or unsubstituted aliphatic, aromatic or cyclic group, or a combination thereof; X is a substituted or unsubstituted cyclopentadieneyl, indenyl or fluorenyl; X4 is -O-RA, -NH-RA, -PH-RA, -S-RA, or -CRB=NRC, where RA, RB and RC are given in the claim. The activator is a substrate activator containing a solid-phase oxide treated with an electron-acceptor anion. The novel compounds have the formula: indenyl(X4)Zr(CH2phenyl)2; where X4 is |
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Invention relates to synthesis of ultrahigh-molecular-weight polyethylene (UHMWPE) with a special morphology and making ultrahigh-strength and high-modulus fibres and belts for making ropes, nets, helmets, body armour and other protective materials therefrom. Described is a catalytic system based on oxyallyl group-functionalised bis-(phenoxy-imine) complexes of titanium chloride with the general structure I-II, to obtain reactor powder of UHMWPE, which can be processed into ultrahigh-modulus ultrahigh-strength fibres and belts via cold forming, having the following structure: , where (I) R1-tBu, R2-CH3O; (II) R1 - isopropylbenzyl, R2-CH3. The ethylene polymerisation method is carried out in the presence of said catalytic system. The invention also relates to a method for cold forming the reactor powder of UHMWPE, obtained from polymerisation of ethylene in the presence of a catalytic system having the following structure: , where (I) R1-tBu, R2-CH3O; (II) R1 - isopropylbenzyl, R2-CH3; (IV) R1 - isopropylbenzyl, R2-H. |
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Silicon-titanium-containing polyol derivatives and hydrogels based thereon Invention relates to novel biologically active chemical compounds - silicon-titanium-containing polyol derivatives (glycerine, polyethylene glycol), as well as hydrogels based thereon. Disclosed are silicon-titanium-containing polyol derivatives, having transcutaneous, wound healing and regenerating activity, the composition of which in excess of polyol has the formula k(CH3)4-nSi(O-R-OH)n·Ti(O-R-OH)4·xHO-R-OH, where R=R1=CH2-CH(OH)-CH2: k=1 or 2, n=2 or 3, x=11 or 12; or R=R2=(CH2-CH2-O-)7,7CH2-CH2: k=1 or 2, n=2-4, x=2 or 3, with dynamic viscosity 1.5-90.0 Pa·s (25±0.5°C), obtained by reacting (methyl)ethoxysilane and tetrabutoxytitanium with polyol in molar ratio (1-2):1:(18-22) for R1 or (1-2):1:(8-15) for R2, respectively, while heating the reaction mass to temperature 90-140°C and holding at that temperature for not less than 6 hours with intense stirring, followed by removal of the formed alcohols. The invention also discloses hydrogels based on said polyol derivatives, containing water and a gelling additive, with the following ratio of components (wt %): silicon-titanium-containing polyol derivatives in excess of polyol - 70.730-94.970; gelling additive 0.002-0.060; water - the balance. |
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Method of producing optically active chromene oxide compound Invention relates to a method of producing an optically active chromene oxide compound of formula or formula where R5, R6, R7, R8, R9, R10 and A are as described in the claim, and the absolute configuration of carbon atoms, denoted by *, denotes (R) or (S), which includes asymmetric epoxidation of a chromene compound of formula or formula with an oxidant in a solvent using optically active titanium complexes of formula formula formula and formula where R1, R2, R3 and R4 are defined in the claim, as a catalyst for asymmetric oxidation of the optically active chromene compound with high enantioselectivity and high chemical output. |
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Activated silane compound, rubber mixture based on said compound and article Disclosed is a rubber mixture containing a rubber component, silicon dioxide and an activated silane compound obtained from a reaction between a hydrocarbyl oxysilane compound and an organic compound of tin, titanium or aluminium in an organic solvent. Disclosed also is a casing made using said rubber mixture for part of its components. |
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Invention relates to a method of producing ethiderm - a water-glycerin complex (2,3-dioxypropyl)-ortho-titanate hydrochloride of formula |
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Phthalocyanine titanyl synthesis method Invention relates to organic chemistry, specifically to synthesis of high purity phthalocyanine titanyl, which can be used as functional electrophotographic material, as well as starting material for preparing catalysts for oxidative processes and medical drugs. Phthalocyanine titanyl is obtained by reacting phthalonitrile with tetrakis-2-dimethylamine ethoxytitanium. Tetrakis-2-dimethylamine ethoxytitanium is obtained from titanium tetrachloride and 2-dimethylaminoethanol, the reagent obtained as a result (without separating it from the reaction mass) is mixed with phthanonitrile. The obtained product contains 98-99% base material. |
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Sensitising agent and method of photodecontamination of water Invention relates to cation phthalocyanines and to a photosensitiser, specifically to octakis(N-(2-hydroxyethyl)-N,N-dimethylammoniomethyl) phthalocyanine titanyl octachloride and its use in purifying water from bacterial contamination. A new cation phthalocyanine - octakis(N-(2-hydroxyethyl)-N,N-dimethylammoniomethyl) phthalocyanine titanyl octachloride is proposed, which is a sensitising agent for formation of singlet oxygen and hydroxyl radicals under the effect of visible light in water. |
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Invention provides novel biologically active compounds, notably solvate complexes of silicon and titanium glycerates imparting transcutan impermeability to medicaments, which can have utility as ointment base for transdermal therapeutic systems characterized by high penetration ability. There are described solvate complexes of silicon and titanium glycerates depicted by following formula: 2Si(C3H7O3)4·Ti(C3H7O3)4·xC3H8O3, wherein 9≤ x≤ 30, and hydrogels based thereon, containing water and gel-forming additive at following proportions of components: solvate complexes 48.4-65.2%, gel-forming additive 0.1-0.6%, and water the rest. |
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Described is complex based on (2,3-dioxypropyl)ortho-titanate-silicate of formula Ti-[O-CH2-CH(OH)-CH2-OH]4.Si-[O-CH2-CH(OH)-CH2-OH]4.12C3H8O.48H2O, obtained by interaction of butylorthotitanate and ethylorthosilicate with glycerol in molar ratio of 1:1:20, respectively, at 100-120°C in vacuum while removing of formed mixture of ethanol and butanol, followed by addition of acidified water with pH 2.5-3.5 and conditioning at 85°C or lower for at least 1.5 hour. Also disclosed is pharmaceutical composition containing aforementioned compound as active ingredient and carrier in ratio (mass %) of active ingredient 0.01-10.00; and balance: carrier. |
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Method for preparing titanyl phthalocyanine Invention relates to a method for preparing titanyl phthalocyanine. Method involves interaction of phthalic acid dinitrile, 1,3-diiminoisoindoline or their mixture with titanium (III or IV) halides, titanium (IV) alkoxides or titanium (IV) alkoxy-halides in the presence of a reducing agent and solvent in atmosphere of dry inert gas under effect of microwave radiation for 15-30 min followed by treatment with water, acid aqueous solution or base aqueous solution, and separation of crystals. Hydroquinone and benzoin are used as reducing agents. Also, titanium (III) chloride or 1,3-diiminoisoindoline can be used as reducing agents that are reagents in the reaction. The following solvents with boiling point above 120°C are used: aromatic hydrocarbons substituted with halogen atoms, alkyls, alkoxy-groups, aryloxy-groups, dialkylamino-groups, alkylarylamino-groups, derivatives of quinoline, benzoxazole, benzthiazole, tertiary amides, heterocyclic tertiary amides, sulfoxides, sulfones, alcohols, dialkylamino-alcohols, trialkylamines, ethers, alkoxy-alcohols. Crystalline X-form and IV-form of titanyl phthalocyanine have been prepared from the synthesized amorphous titanyl phthalocyanine by re-precipitation from solution in mixture of dichloromethane with trifluoroacetic acid into mixture of methanol with water and 2-propanol with water, respectively. Results are confirmed by mass-spectra (TOF-MALDI method) and roentgenograms with the yield 96-97%. Titanyl phthalocyanine is used as charge-generating pigment for eclectrophotography aims. |
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Titanium compound derivatives, production and uses the same Invention relates to titanium compounds of formula [TiF2L2] or containing group of formula [TiFxLy]z-, wherein x = 2, 4 or 5; y = 1 or 2; z = 1 or 2; L is group of formula II , wherein m = 1; n = 0, 1 or 2, in enantiomer, diastereomer forms, or mixture thereof, including racemates; as well as free bases or pharmaceutically acceptable salts. Composition containing claimed compounds for buccal application to prevent dental caries also is disclosed. |
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Invention provides a method for preparing water/glycerol complex of (2,3-dihydroxypropyl) ortho-titanate hydrochloride (chloride) having symbolic name "Ephtiderm", which is depicted by following empirical formula: Method consists in that glycerol is mixed with butyl ortho-titanate at molar ratio 12:1, whereupon butanol is distilled off in vacuum, residue is treated with water and aqueous hydrochloric acid to form reaction mass with pH 2.2-3.0, which is heated in vacuum. Method is characterized by that glycerol is mixed with low-grade butyl ortho-titanate and chloroform, reaction mass during the synthesis is maintained at temperature up to 100°C in vacuum 40-200 mm Hg, while chloroform is added at 40-50°C in amount corresponding to 1 L chloroform per 2 L low-grade butyl ortho-titanate. |
Another patent 2513764.