125 results about "Triethylaluminium" patented technology

The invention discloses an equivoluminal dipping loading method of non-metallocene olefin polymeric catalyst as well as application of copolymerizing course within two or more different olefins, which comprises the following steps: dissolving non-metallocene olefin polymeric catalyst in the solvent; mixing solution and carrier; stirring wet solid material evenly; drying; obtaining the load-typed non-metallocene olefin polymeric catalyst; making the solvent and carrier satisfy specific relationship.

The invention discloses an application of load non- metallocene catalyst in the slurry process for vinyl polymerying, the load non- metallocene catalyst and catalyst promoter forming the catalytic system, the alkene polymerization comprising: vinyl homopolymerization, combined polymerization of vinyl with propylene, butylenes, hexane, octane or norbornene; the catalyst carrier being chosen from: inorganic oxide of metallic oxide from IIA, IIIA, IVA, and IVB groups, or oxided mixture and mixing oxide; the catalyst promoter being chosen from: methylaluoxane, ethylaluoxane, isobutylaluoxane, trimethylaluminum,triethylaluminum,triisobutylaluminum,methylaluoxane-trimethylaluminum or methylaluoxane-triethylaluminum; the mole proportion between the catalyst promoter and catalyst being Al/Ti= 1:1-500. The inventioin is characterized by the less methylaluoxane consumption, stable reaction, easy-to-control polymerization temperature and non still-sticking phenomenon. The produced polyolefine possesses perfect granual shape, and the maximum polymer clamp density can reach 0.385 g/ml.

The invention discloses a domino catalyzing system of a primary metallocene catalyst, which takes ethane as a sole monomer to prepare branched polyethylene, and the application thereof, which relates to vinyl copolymer. the catalyzing system is a compound catalyzing system consisting of the single primary metallocene catalyst and two different catalyst promoters, wherein, the primary catalyst is a metallocene catalyst with a structural formula of Cp<1>MR<1>R<2>R<3>, Cp<1>Cp<2>MR<1>R<2> or Cp<1>-D-Cp<2>MR<1>R<2>; alkyl aluminium acts as an oligomerization catalyst promoter; methylaluminoxane or triisobutyl aluminium or triethyl aluminum that is not used together with the oligomerization catalyst promoter acts as a copolymerization catalyst promoter; the mole ratio between the oligomerization catalyst promoter and the primary catalyst is 10-1000 to 1, and the mole ratio between the copolymerization catalyst promoter and the primary catalyst is 20-1000 to 1. The catalytic activity of the metallocene domino catalyzing system for preparing the branched polyethylene is 5 multiplied by 10<5> to 5 multiplied by 10<7>gPE/(molM per hour), the degree of branching is 10-200/1000C, the molecular weight of the branched polyethylene prepared under the effect of the catalyzing system ranges from 1 multiplied by 10<5> to 4 multiplied by 10<5> and the melting point is below 120 DEG C or even no melting point exists.

The invention relates to a synthesizing process of aluminum triethide. The process contains the following procedures: continuous hydrogenation in a hydrogenation reactor for hydrogenation of titanium-containing aluminum powder for six to seven hours under the protection of inert gas and a pressure of 10-12MPa with aluminum triethide as the seed; continuous ethylene introduction under 0.5-3 pressure to acquire crude aluminum triethide after reaction completion within five to six hours; vaporizing distillation to separate impurities and ethylene transformation reaction to get aluminum triethide; dilution of residual impurity solution after distillation with hexane; hydrolization; and hexane recovery. The hydrogenation pressure of the invention is low, decreased from 28MPa to 10MPa. Adopting the body catalysis with aluminum triethide seed to disperse aluminum powder, the invention has simple process flow, All the equipment are localized. No pollution is caused. The cost is low while the yield is over 85-90 percent and the product quality is high.

The invention relates to an ONS (Organometallics) type salicylaldimine binuclear metallic alkene catalyst as well as a preparation method thereof and the application thereof. Under an effect of p-toluenesulfonic acid, bisalicylaldehyde or a bisalicylaldehyde derivative performs condensation reaction with amines containing sulfur atoms in an alcohol solution so as to obtain Schiff base; and the obtained Schiff base has complexing reaction with IVB group transition metal under water-free and oxygen-free conditions so as to obtain the ONS type salicylaldimine binuclear metallic alkene catalyst. Compared with a mononuclear metal alkene catalyst, the ONS type salicylaldimine binuclear metallic alkene catalyst provided by the invention has the advantages of higher catalytic activity and better thermal stability due to binuclear metallic synergistic effect during catalyzing ethylene homopolymerisation or ethylene and 1-hexene copolymerization. Under the pressure of a methylaluminoxane (MAO) or triethylaluminium assisted catalyst and 1 atm ethylene, the ethylene homopolymerisation is catalyzed and the activity can reach 1.6*10<6> gPE/molTi.h; and during catalyzing the ethylene and 1-hexene copolymerization, the activity reaches 3.8*10<5> gPE/molTi.h.

The present invention provides a catalyst composition for the ethylene oligomerization, which comprises 2-imino-1,10-phenanthroline coordinated iron (II), cobalt (II) or nickel (II) chloride as main catalyst and triethylaluminum as cocatalyst. The present invention also provides a process for oligomerization of ethylene is provided, wherein a catalyst composition comprising 2-imino-1,10-phenanthroline coordinated iron (II), cobalt (II) or nickel (II) chloride as main catalyst and triethylaluminum as cocatalyst is used, and the molar ratio of aluminum in the cocatalyst to central metal in the main catalyst ranges from 30 to less than 200. According to the present invention, another process for oligomerization of ethylene is also provided, wherein a catalyst composition comprising 2-imino-1,10-phenanthroline coordinated iron (II), cobalt (II) or nickel (II) chloride as main catalyst and triethylaluminum as cocatalyst is used, and the temperature of ethylene oligomerization ranges from −10 to 19° C. According to the present invention, the price of cocatalyst i.e. triethylaluminum, is low, just a fraction of that of methylaluminoxane, the amount of cocatalyst is therefore significantly reduced, with the catalytic activity is still acceptable, thus the cost of ethylene oligomerization is significantly reduced. In view of both the catalytic activity and the cost, the present invention is highly applicable in industry.

The invention relates to an adjustment method for the molecular weight distribution of a rare-earth isoprene rubber; an isoprene monomer comprises 5-20g/100mL of hexane in concentration; a ratio of the mole number of Nd of a rare-earth catalyst to the gram of the isoprene monomer is 1*10<-7>-1*10<-6>:1, wherein the rare-earth catalyst contains a component A, i.e. neodymium naphthenate or neodymium neodecanoic acid, a component B, i.e. one or a mixture of diethyl aluminium hydride and aluminium ethyl and a component C, i.e. one of aluminium diisobutyl monochloride or aluminium diethyl monochloride; the molar ratio of A to B to C is 1:5-20:1-5; different polymer molecular weight distribution indexes MW/MN in the range of 1.90-7.80 are obtained by respectively selecting feeding modes of (A+B)+C, (A+C)+B or (C+B)+A; and according to the adjustment method, the content of a cis-1,4 structure is larger than 96.5%, and the Moony viscosity is 80+/-5 (ML+4100 DEG C).

The invention relates to a sulfoacid rare earth catalyst for polymerizing high-cis-isoprene rubber and a preparation method thereof. The catalyst comprises benzenesulfonic acid neodymium rare earth complex and alkyl aluminum; the molar ratio of the alkyl aluminum to the rare earth neodymium in the benzenesulfonic acid neodymium rare earth complex is 15 to 40:1, wherein the benzenesulfonic acid neodymium rare earth complex comprises benzenesulfonic acid neodymium alcohol complex, benzenesulfonic acid neodymium sulphoxide complex, benzenesulfonic acid neodymium furan complex, benzenesulfonic acid neodymium amine complex, benzenesulfonic acid neodymium ether complex and benzenesulfonic acid neodymium ester complex; ligand comprises: alcohol compound, sulfoxide compound, furan compound, amine compound, ether compound and ester compound; and the alkyl aluminum comprises: 3-isobutyl aluminum, triethyl aluminum, diisobutyl aluminum hydride, or diethyl aluminum hydride. The sulfoacid rare earth complex catalyst is used for polymerizing isoprene, and can obtain the high-cis rare earth polyisoprene rubber with the cis 1,4 structure content more than 96.0 percent and the weight-average molecular weight more than 2.2 million.

The invention relates to the technical field of coatings, and provides an antibacterial formaldehyde-removing coating. The coating comprises the following raw materials: polyether polyol, polyisocyanate, an acrylate monomer, a first chain extender, a second chain extender, a neutralizer, a catalyst, an initiator, butanone, acetone, water, an emulsifier, an antibacterial agent, a silane coupling agent, a formaldehyde removal acting substance, activated bamboo charcoal powder and ethylene glycol. According to the invention, titanium trichloride and triethyl aluminum are used as catalysts, and asemi-interpenetrating network polymer is prepared by using complementary properties of polyurethane and polyacrylate, so that water resistance of a coating film is improved, and storage stability is good. A diatom purificant, the activated bamboo charcoal powder and the antibacterial agent are adopted as antibacterial and formaldehyde removal functional materials of the coating, so that the coating has a good antibacterial property and high formaldehyde removal capability.

The invention discloses a production method of a lithium ion battery barrier membrane homo-polypropylene special material. According to the production method, a propylene polymerization catalyst with high activity and moderate hydrogen regulation sensitivity is used; a propylene polymerization activator is used as triethyl aluminium and the addition amount is controlled to be below 7.0L/hours; and an external electron donor is prepared from bicyclo-amyl dimethoxy silane and tetraethoxysilane in the molar rate of 1:1 and 1:8. In the pelleting workshop section of the special material, a stabilizing agent system consisting of main antioxygen, auxiliary antioxygen, disacidifying agent and the like is added; and a biaxially-oriented polypropylene (BOPP) membrane special material used for producing the lithium ion battery barrier membrane is finally produced, wherein the biaxially-oriented polypropylene (BOPP) membrane special material has the characteristics that the isotacticity is more than 98 percent, the melting flow rate (MFR) is controlled to be 2.8+/-0.2g/10min, the ash content is controlled to be 50-100ppm, the volatile matter is less than 100ppm, the oxidation induction time is more than 15min and the molecular weight distribution is controlled to be 7.0-10.0.

The invention discloses a method for preparing a wear-resistant sole, which comprises the following steps of weighing the following materials in weight parts: 70-78 parts of ethylene propylene diene rubber, 11-13 parts of carbon black, 5-7 parts of aluminum triethyl, 10-12 parts of p-nitrophenol, 10-12 parts of polystyrene, 30-35 parts of natural 3L rubber, 5-8 parts of polyvinyl alcohol and 11 parts of talcum powder; mixing the weighed raw materials together and then putting the materials into an internal mixer for banburying; pouring out the mixture after all the raw materials are evenly mixed when the temperature reaches 110-113 DEG C; then pelletizing the banburied mixture via a pelletizer to obtain granules, and then putting the granules into a water tank for cooling and then drying the granules under room temperature; finally injection molding the dried granules so as to obtain the sole. The sole prepared by the invention is greatly improved in wear resistance on the premise of not influencing the elasticity, comfort and other properties, and the sole has no toxic or polluting effects and also guarantees safety and environmental friendliness.

The synthesis of fused liquid crystal of chitosan grafted polylactic acid includes vacuum deairing of chitosan for 1 hr, charging nitrogen, adding toluene as dispersant, dripping toluene solution of aluminium ethide as catalyst in 1-3 molar times of chitosan, ring opening polymerization of lactide inside solution to produce grafted copolymer of chitosan and polylactic acid. The grafted copolymer of the present invention has special performance, and may be used as interface coupling agent for polymer blend of chitin, chitosan and polylactic acid as well as medicine delayed releasing material and other human body implanting biological material. In addition, it has the performance of fused liquid crystal and thus may be produced into various biological material.

The preparation of dissolved liquid crystal of chitosan grafted polylactic acid includes vacuum deairing of chitosan for 1 hr, charging nitrogen, adding toluene as dispersant, dripping toluene solution of aluminium ethide as catalyst in 1-3 molar times of chitosan, ring opening polymerization of lactide inside solution to produce grafted copolymer of chitosan and polylactic acid. The copolymer is dissolved in trifluoro acetic acid, acetic acid, dichluoro acetic acid or water, and when the solution concentration is greater than 1%, the liquid crystal behavior may be observed in polarizing microscope. The grafted copolymer of the present invention has special performance, and may be used as interface coupling agent for polymer blend of chitin, chitosan and polylactic acid as well as medicine delayed releasing material and other human body implanting biological material and various biological fibrous material.

The invention discloses a transparent rigidity and toughness balanced thermoforming homo-polypropylene resin. The resin comprises polypropylene, a main antioxidant 1010, an auxiliary antioxidant 168,an acid acceptor calcium stearate and a nucleating agent. The invention also discloses a preparation method of the transparent rigidity and toughness balanced thermoforming homo-polypropylene resin. The method comprises the following steps: adding propylene and hydrogen into a Unipol gas phase fluidization reactor, carrying out a polymerization reaction in the presence of a main catalyst SHACTM 201, a cocatalyst triethyl aluminum and an external electron donor n-propyltrimethoxysilane, and adjusting the content of xylene-soluble substances in the obtained powder to obtain a polypropylene powder; and adding the main antioxidant 1010, the auxiliary antioxidant 168, the acid acceptor calcium stearate and the nucleating agent, performing mixing, and carrying out double-screw melt extrusion andgranulation to obtain the resin. The resin prepared in the invention has the advantages of excellent transparency, well balanced modulus and impact strength, specific content range of xylene-solublematters, high heat resistance and good processability.

The invention relates to a catalyst system for preparing broad-peak/dimodal polyethylene in a single reactor, wherein the catalyst system belongs to a polymerization catalyst which is used for the macromolecular compound preparation and is obtained only through a carbon-carbon unsaturated bond reaction. The catalyst system is characterized in that the catalyst comprises a main catalyst and an assistant catalyst, wherein the main catalyst comprises a component a or a component b; the component a is a transition metal-containing complex with the molecular formula of R1R2R3MX, R1 is selected from C1-20 alkyl, R2 is selected from C1-20 alkoxy, R3 is selected from C1-20 aryl or arlyoxy, M is Ti or Zr, and X is a halogen atom; the component b is a transition metal compound with the general formula of MXn or MXn(OR)4-n, M is a transition metal Ti or Zr, X is halogen, and n is between 1 and 4; and the assistant catalyst is methyl siloxane (MAO) or triethyl aluminum (TEAL). The catalyst system for preparing broad-peak/dimodal polyethylene in the single reactor provided in the invention has the advantages of easily controlled production technology, realization of the obtaining of broad-peak/dimodal polyethylene resin products with uniform molecular weight distribution, saved investment of equipment for the polyethylene production, and low production cost.