65 results about "Tributyltin" patented technology

The invention discloses a method for preparing an aqueous polyurethane / nano titanium dioxide hybrid material and relates to a preparation technology of a modified polyurethane emulsion. The method comprises the following steps of: (1) preparing TBT (Tributyltin) sol; (2) adding polyalcohol and isocyanate which are used as raw material monomers, adding a hydrophilic chain extender, heating up the system to 30-80 DEG C by using N-polyvinyl pyrrolidone as a solvent and then adding a catalyst; (3) after the mixture reacts of 1-6 hours, heating up the system to 60-100 DEG C; continuing to make the mixture react for 1-6 hours, and then cooling to 20-60 DEG C; adding triethylamine used as a salt forming agent, and making the mixture react for 10-60 minutes; dispersing with water by using ethanediamine as a chain extender to obtain an aqueous polyurethane emulsion; maintaining the temperature to 20-50 DEG C, adding a small quantity of gamma-epoxypropyl trimethoxy silane and stirring for 10-90 minutes; adding the TBT sol to the system and dropwise adding a small quantity of hydrochloric acid; and persistently stirring for 12-48 hours to obtain the aqueous polyurethane / nano titanium dioxide hybrid material. The properties such as the weather resistance, the mechanical property, the coating transparency, and the like of the hybrid material are greatly improved.

The invention belongs to the field of polymer semiconductor materials, and discloses a polymer semiconductor containing a bipyridine diazole derivative receptor and a preparation method and application thereof. A structure of the polymer semiconductor is shown in a formula (I), and the preparation method comprises the following steps: (1) reacting 2-tributyltin-4-alkylthiophene with a dibromobenzimidazole derivative to prepare an intermediate a; (2) reacting the compound a with a bis-butyltin b to obtain a compound c; (3) performing a reaction on the compound c and N-bromosuccinimide to obtainM1; and (4) performing a palladium-catalyzed coupling reaction on the M1 and (E)-bis1,2-(tri-n-butyltin)ethylene to obtain the final product. According to the invention, the synthetic route is simpleand high-efficiency, the raw materials are easy to obtain, the costs are low, the universality is high and the repeatability is good, and a field effect transistor prepared by using the polymer semiconductor as an active layer obtains outstanding bipolar transmission characteristics, and has wide market prospects.

The invention discloses an additive composition for improving NOx emission in M85 methanol gasoline. The additive composition is prepared by mixing the following components: 18.0-31.0% of 4-fluorobenzylmagnesium chloride, 15.0-29.5% of diethyl diselenide, 15.0-24.5% of diethyl benzylphosphonate, 13.0-24.0% of tripropanol vanadium oxide (V), 10.0-20.5% of trifluoride diethyl etherate and 9.0-19.5% of 2-(tributyltin alkyl) furan. The additive composition has an obvious effect of improving the NOx emission in M85 methanol gasoline at high proportion; when 0.02-0.05% of the additive composition is added into common M85 methanol gasoline, the NOx emission can be reduced by over 30%.

The invention discloses a low-temperature-resistant sealing strip for a window. The low-temperature-resistant sealing strip is prepared from, by weight, 35-40 parts of nitrile butadiene rubber, 40-45 parts of natural rubber, 25-30 parts of butadiene styrene rubber, 20-25 parts of cis-polybutadiene rubber, 8-10 parts of sulphur, 7-11 parts of carbon black, 9-15 parts of carbon fibers, 5-10 parts of naphthenic oil, 12-14 parts of vaseline, 6-12 parts of dibutyl sebacate, 4-8 parts of diphenyl silanediol, 2-6 parts of diesel oil, 7-11 parts of epoxidized soybean oil, 13-16 parts of phthalic esters, 5-10 parts of alkylphenol ethoxylates, 8-12 parts of polyoxyethylene alkanolamide, 4-8 parts of talcum powder, 15-20 parts of quartz powder, 5-10 parts of titanium dioxide, 7-9 parts of sodium fluoride, 8-14 parts of tributyltin and 1-4 parts of benzotriazole. The low-temperature-resistant sealing strip for the window is high in low temperature resistance, antistatic and capable of delaying light aging and keeping long service life of the window.

The invention discloses a rice straw-polyurethane / rock wool composite partition board and a preparation method thereof. The preparation method comprises the following steps: 1) breaking rice straws, brooming to obtain straw fibers, and then carrying out foaming reaction on the straw fibers, yellow dextrin, a foaming agent, polyurethane, triethylenediamine, dimethyl siloxane, tributyltin and ethylene glycol, so as to obtain a foamed object; 2) carrying out melting, wire drawing and cooling on dolomite, basalt, attapulgite, nano talcum powder, white carbon black and urea, so as to obtain foamedrock wool fibers, and then solidifying and compressing the foamed rock wool fibers by virtue of a bonding agent, so as to obtain a rock wool board core; and 3) coating the foamed object on the surfaceof the rock wool board core, and then cooling, so as to obtain the rice straw-polyurethane / rock wool composite partition board. The composite partition board has excellent light weight and fireproofeffects, and the preparation method has the advantages of simple working procedures and available raw materials.

The invention relates to a notebook shell coating as well as a preparation method and application thereof. The notebook shell coating comprises the following components in parts by mass: 60-65 parts of trans-1,4-cyclohexane didsocyanate, 25-35 parts of n-butyl alcohol, 15-20 parts of an aminosilane coupling agent, 5-10 parts of tributyltin methacrylate, 8-15 parts of dimethylbenzene, 20-30 parts of modified spherical carbonyl iron powder, 4.5-9 parts of epoxy resin, 10-20 parts of aluminum oxide particles, 10-12 parts of borax and 50-100 parts of deionized water.

The invention discloses a preparation method for a flame-retarding partition wall for space rent. The preparation method comprises the steps that (1) flame retardants are prepared, specifically, alkylphosphinate shown as the formula (I), tributyltin, tri-n-octylphosphine oxide and melamine are heated at the temperature of 220-280 DEG C and make contact; (2) three-layer flame-retarding plate bodiesare prepared, specifically, first-layer materials, second-layer materials and third-layer materials are mixed respectively and then subjected to co-extrusion forming; and (3) a filling layer is gluedbetween the two three-layer flame-retarding plate bodies arranged oppositely, wherein the first-layer materials, the second-layer materials and the third-layer materials all contain the flame retardants. The flame retardants in plates used for the partition wall do not lose flame-retarding performance in the high-temperature processing process, and generating of fragile substances is not found either, mechanical performance is good, flame retarding and environmental friendliness are achieved, and quite high application and popularization value is achieved.

The invention discloses an anti-aging automobile motor controller wire harness and a preparing method thereof. The method comprises the steps that firstly, bentonite, diazonium salt, tributyltin and vinyl triethoxysilane are subjected to a contact reaction in an organic solvent under the alkaline condition, and then filtering is carried out to obtain a modified activator; secondly, natural rubber, silica powder, N-cyclohexyl-N-phenyl-p-phenylenediamine, butylated hydroxytoluene, lignin, urea phosphate, 2-methyl anthracene, methyl tertiary butyl ether, trimethoprim, methyl triethoxysilane, ammonium chromic alum and the modified activator are mixed into rubber masterbatch; thirdly, a vulcanizing agent, sulfur and the rubber masterbatch are subjected to first-time vulcanization treatment; fourthly, the rubber masterbatch obtained after first-time vulcanization treatment is subjected to second-time vulcanization to form modified rubber; fifthly, the modified rubber is applied to the surface of a wire core through extruding formation to form the anti-aging automobile motor controller wire harness. The wire harness has excellent mechanical properties, high-temperature resistance and antibacterial performance.

The invention relates to a method for preparing 131I-metaiodobenzylguanidine with high radioactive specific activity and without a carrier. The method comprises the following steps: performing normal-temperature reaction on a labeled precursor N,N'-di(t-butyloxycarboryl)-3-(tributyltin)-bethanidine, a buffer solution, an oxidizing agent and Na131I for 20 minutes, and adding a reducing agent and heating to 100 DEG C to react for 20 minutes; standing after the reaction is finished, cooling to room temperature, adding anion exchange resin and lightly stirring for 2 minutes; absorbing supernate and passing through a microfiltration membrane to obtain the product. The 131I-metaiodobenzylguanidine, prepared by using hydrogen peroxide--trifluoroacetic acid or N-chlorosuccinimide--sodium pyrosulfite as the oxidizing agent and the reducing agent, has high radiochemical purity and high radioactive specific activity. Reaction byproducts are removed from the 131I-metaiodobenzylguanidine solution after anion exchange resin treatment and microfiltration membrane filtration, and the tin amount is reduced to trace amount, so the 131I-labeled metaiodobenzylguanidine is suitable for clinical diagnosis and treatment. The condition of the labeling reaction is mild and simple, so preparation can be finished in a hospital, and high cost and decay loss of medicines caused by transportation are avoided.

The invention discloses a making method of (s)-(-)-5-tributyl tin-N-[(1-allyl-2-pyrrolidyl) methyl]-2, 3-dimethoxy benzamide in the organic synthetic technical domain, which comprises the following steps: a) adopting 5-iodine-2, 3-dimethoxy benzene carbonic acid and (s)-1-allyl-2-methylamino pyrrolidone as raw material; acylating dicyclo hexylcar bodiimide and pyridine; or b) acylating oxalyl chloride and N, N-dimethyl formamide to make (s)-(-)-N-[(1-allyl-2-pyrrolidyl) methyl]-5-iodine-2, 3-dimethoxy benzamide with receiving rate at 85% and 91% separately; reacting with ditributyl tin catalyzed by (Ph3P4)Pd and PdAc to produce the product with receiving rate at 82% as important marked primer of 123I-nalepride to make SPECT imaging agent marked by iodine [123].

The invention discloses a preparation method of a plasticized specimen, and belongs to the technical field of specimen treatment. The method comprises the following steps: weighing 100 parts by weightof silicone rubber, adding 3-5 parts by weight of catalysts, and uniformly stirring to obtain rubber A; putting a dehydrated and degreased specimen into the rubber A disposed in a vacuum pressure bin, standing for 8-12 days to obtain an impregnated specimen; taking out the specimen, putting the specimen into a warm room at 35-45 DEG C, and fumigating the specimen with curing agent steam for 3-5 days so that the specimen is completely cured. After the catalysts which are dibutyltin and tributyltin are added into the silicone rubber, the specimen mould-proof effect is remarkable, and the service life of the specimen is effectively prolonged. The preparation method is simple to operate and high in feasibility, and has the advantages of environmental protection, no toxicity, no odor, no irritation and the like; the plasticized specimen is easy to preserve and long in preservation time.

The invention relates to a synthesis method of valsartan. The method comprises the following steps: by taking L-valine benzyl ester (I), para-bromobenzyl bromide (II) and benzonitrile (V) as primary raw materials, reacting the L-valine benzyl ester (I) with the para-bromobenzyl bromide (II) to produce a compound (III); performing acrylation reaction on the compound (III) and ammonium valeryl chloride to obtain (S) 2-[(4-bromobenzyl)-valeryl]-3-methyl benzyl butyrate (IV); after performing n-butyllithium treatment on the benzonitrile (V), reacting with trimethyl borate to obtain 2-cyanophenyl boric acid (VI); performing Suzuki coupling reaction on the compound (IV) and the compound (VI) to obtain (S)-N-valeryl-N-[(2'-cyanobiphenyl-4-yl)methyl]-valine benzyl ester (VII); reacting the compound (VII) with azidotributyltin to obtain (S)-N-valeryl-N-[[2'-(N'-tributyltin-5-tetrazolyl)-4-diphenyl]methyl]-valine benzyl ester (VIII); performing protecting group removal reaction and hydrolysis reaction on the compound (VIII) to obtain target product valsartan (X). The synthesis method has the advantages of mild synthesis condition, high yield, less using amount of solvent and low production cost and is suitable for industrial production.

The invention discloses a bi(tributyltin) trans-butene dibasic acid ester complex as well as a preparation method and an application thereof. The complex is a complex of a structural formula (I) as shown in the specification. The invention further discloses the preparation method the bi(tributyltin) trans-butene dibasic acid ester complex and the application in preparing an anti-tumor medicine.