228 results about "N-methylpyrrole" patented technology

A non-aqueous air battery of the present invention includes a negative electrode for which a material which absorbs and releases lithium ions is used as a negative electrode active material, a positive electrode for which oxygen is used as a positive electrode active material, and a non-aqueous electrolyte disposed between the negative electrode and the positive electrode. The positive electrode contains a donor-acceptor molecule in which an electron-donating donor (D) having a porphyrin ring is connected to an electron-accepting acceptor (A) composed of a fullerene derivative, with a conductive spacer therebetween. An example of the donor-acceptor molecule is triphenylporphyrinyl bithienyl N-methylpyrrolidino[60]fullerene.

The present invention relates to a method for the preparation of a layer of a plasma-polymerised material on the surface of a substrate, e.g. a substrate of a glass, an organosiloxane-based or polysiloxane-based material, silicon, fluoro-polymer (e.g. Teflon®), etc. The present invention also relates to novel objects and microstructured or micro-patterned devices, e.g. by lift-off techniques, in particular such objects and devices that have layers of electrically conducting materials providing a conductivity of at least 0.01 S/cm. A feature of the invention is the plasma-polymerization of a compound including at least one polycyclic compound, said polycyclic compound(s) comprising a non-aromatic heterocyclic ring fused to an aromatic or heteroaromatic ring or ring system. Examples of such compounds are 3,4-ethylenedioxythiophene (EDT) forming layers of poly(ethylenedioxythiophene) (PEDT), and piperonylamine, piperonyloyl chloride, safrole, 3,4-ethylenedioxypyrrole, 3,4-ethylenedioxy-N-methylpyrrole, and 3,4-methylenedioxythiophene.

The invention discloses a diamond nonstick coating composition and a preparation method thereof. The coating composition comprises a primer and a finishing coat, wherein the primer comprises the following components in percentage by weight: 1-5% of carbon black, 5-10% of a surfactant, 10-32% of polytetrafluoroethylene, 10-20% of N-methylpyrrolidone, 30-50% of water, 0-5% of diamond powder and 5-15% of bonding resin, totally 100%; the finishing coat comprises the following components in percentage by weight: 5-20% of a surfactant, 35-50% of polytetrafluoroethylene, 20-40% of water, 0-5% of diamond powder and 15-19% of an organic solvent, totally 100%; the percentages by weight of the diamond powder in the primer and finishing coat are not zero at the same time. The diamond nonstick coating composition disclosed by the invention has excellent coating pencil hardness, heat conductivity and wear resistance.

The invention provides a method for preparing environment-friendly aromatic oil from catalytic cracking slurry oil. The environment-friendly aromatic oil which meets the European 2005/69/EC directive is prepared by performing repeated extraction with double solvents on the catalytic cracking slurry oil by using an alkyl solvent with small polarity and the solvents such as furfural, N-methylpyrrolidone, dimethyl sulfoxide and the like with large polarity. Toxic polycyclic aromatic hydrocarbon in the obtained environment-friendly aromatic oil is less than 3 percent, and the benzopyrene content is less than 0.1ppm, so the oil can be used as environment-friendly rubber filling oil and environment-friendly aromatic oil for other purposes.

The invention relates to a preparation method of lithium battery anode slurry. The preparation method comprises the following steps of 1, preparing a glue solution through the processes of putting a right amount of N-methylpyrrolidone (NMP) and a right amount of polyvinylidene fluoride (PVDF) into a vacuum dispersator, and carrying out vacuum-pumping and stirring, b, carrying out preblend of a conductive agent, an active material and Li2CO3, adding the mixture of the conductive agent, the active material and Li2CO3 into the glue solution obtained by the step 1, and stirring for 3 to 5 hours, and c, testing viscosity of the solid-liquid mixture obtained by the step b, and adding N-methylpyrrolidone (NMP) into the solid-liquid mixture to adjust the viscosity of the solid-liquid mixture so that the viscosity the solid-liquid mixture satisfies a coating requirement. The preparation method of the lithium battery anode slurry has the advantages of simple operation and preparation processes. The preparation method of the lithium battery anode slurry also has the advantages of improving production efficiency, reducing energy consumption, reducing a total amount of gas produced by subsequent formation of a lithium battery prepared from the lithium battery anode slurry, increasing battery reversible capacity, and realizing the optimal cycle performance.

The invention belongs to the technical field of lithium ion batteries, and provides composite conductive paste for anodes and cathodes of the lithium ion batteries as well as a preparation method for the composite conductive paste. The composite conductive paste comprises the following ingredients in parts by weight: 4.0-5.0 parts of carbon nanotubes, 0.5-1.5 parts of reduced expanded graphite, 0.3-1.2 parts of polyvinylpyrrolidone, 88-93 parts of N-methyl pyrrolidone and 0.001-0.01 part of a complexing agent. The composite conductive paste can be combined with active substances to form a favorable conductive network, so that the lithium ion batteries have such electrochemical properties as long cycle life and high energy density.

The invention discloses an environment-friendly converter bedding-face repairing material and a preparation method thereof. The repairing material comprises the following ingredients by weight percent: 30 to 65 percent of sintering magnesium sand, 10 to 45 percent of waste magnesite-chrome bricks, 1 to 10 percent of asphalt powder, 5 to 15 percent of tar, 1 to 5 percent of ethanol, 1 to 5 percent of N-methyl-2-pyrrolidinone and 0 to 5 percent of o-xylene. The preparation method comprises the following steps: 1) pre-crushing the sorted sintering magnesium sand and recycled waste magnesite-chrome bricks; 2) uniformly mixing the pre-crushed sintering magnesium sand and waste magnesite-chrome bricks to obtain a mixed coarse material; 3) finely crushing the mixed coarse material to obtain a mixed fine material; 4) uniformly mixing the mixed fine material and asphalt powder in a stirring machine; 5) adding tar, ethernol, N-methyl-2-pyrrolidinone and o-xylene, and stirring the mixture for 10 to 25 minutes. The practices prove that the converter repairing material has good mobility, can be sintered easily, has long service life and generates little smoke when sintered.

The invention relates to a method for synthesizing cefepime hydrochloride. The method comprises the following steps: taking 7-aminoce-phalosporanic acid (7-ACA) and N-methylpyrrolidine as raw materials, firstly, carrying out carboxylic and amino protection on the 7-ACA by HMDS, then preparing the N-methylpyrrolidine and iodotrimethylsilane into a quaternary ammonium salt intermediate, finally, adding the intermediate into the protected 7-ACA solution and reacting to prepare 7-MPCA; taking the 7-MPCA and AE-active ester, adding a phase transfer catalyst into an organic phase for carrying out an N-acidylating reaction, salifying and reacting to obtain the cefepime hydrochloride. The invention has the main characteristics that the quaternary ammonium salt intermediate is prepared in the step (1), the defects of high electron cloud density, strong reactivity and many side reactions of the N atom of N-methyl pyrrole are overcome, the yield is enhanced by 7%, and the product purity is enhanced. During the N-acidylating reaction in the organic phase in the step (2), the phase transfer catalyst is added, so that the conversion rate of the reaction is enhanced by 5%, and the product yield is enhanced.

The invention discloses a lithium ion battery electrolyte solution, and relates to the technical field of manufacturing of lithium ion batteries; the lithium ion battery electrolyte solution comprisesa lithium salt, a solvent, vinylene carbonate, an additive A and an additive B; the additive A is an ether nitrile compound or an aromatic compound, and the additive B is an organic ammonium salt; the ether nitrile compound is one of tetraethylene glycol dimethyl ether, ethylene glycol monobutyl ether, butanedinitrile or 1,3,6-hexanetricarbonitrile, the aromatic compound is one of thiophene, N-methylpyrrole or o-terophenyl, and the organic ammonium salt is ammonium benzoate or methyl ammonium benzoate. Based on the conventional additives, the combined additive of ether nitrile, the aromatic compound and the organic ammonium salt is added, a low-impedance, thin and dense SEI film is formed, and the battery internal resistance, the rate performance and the low-temperature performance are improved.

The invention discloses a preparation method of cefepime hydrochloride, comprising the following steps of: reacting oxalyl chloride with 2-methoxyimino-2-(2-aminothiazole-4-yl) acetic acid hydrochloride to obtain a midbody I, i.e. 2-methoxyimino-2-(2-aminothiazole-4-yl) acetyl chloride hydrochloride; mixing silanized 7-aminoce-phalosporanic acid and silanized N-methylpyrrolidine, and reacting to obtain a midbody II, i.e. hydriodic acidification (6R, 7R)-7-amino-3-[(1-methyl-1-tetrahydro pyrrolidine) methyl]-3-cephem-4-formic betaine, in the presence of trimethyl idodine silicon hydride, isopropanol and an aqueous solution of hydrogen iodide; dissolving the midbody II into dichloromethane, sequentially adding trimethylchlorosilane and hexamethyldisilazane for reaction, and then adding the midbody I and triethylamine to react to prepare the cefepime hydrochloride. The cefepime hydrochloride prepared by the method has the advantages of uniform crystal form, good flowability and simple process and is suitable for industrialized production.

A porphyrin array exhibiting a large two-photon absorption property, and being linked with an acetylenic bond(s), represented by the following formulas:

wherein R₁ represents an alkyl or aryl group, M₁ represents a metal ion capable of serving as a core metal and forming a coordinate bond with Im, M₂ represents two protons or a metal ion incapable of forming a coordinate bond with Im, R₂ and R₃ represent a group selected from a porphyrin residue or porphyrin metal complex residue, a cyclic diimide residue, a dialkylviologen residue, a benzoquinone residue, an N-methylpyrrolidine-fullerene derivative residue and a ferrocene residue, Im is represented by Im₁ or Im₂:

(R₈ represents methyl or H), L₁ represents —(—C≡C—)_m— (m=1 to 3); n represents an integer of 1 or more; R₉ represents one of R₁, R₂, R₃ and Im.

The invention discloses a special cleaning agent of an environment-friendly water-based circuit board and a preparation method of the special cleaning agent. The special cleaning agent comprises the following components in weight percentage: 5%-30% of D-limonene, 2%-7% of a solubilizer,12%-30% of butyl cellosolve, 5%-10% of N-methyl pyrrolidone, 0.5%-5% of an emulsifying agent, 0.2%-0.5% of triethanolamine, 0.2%-0.4% of EDTA (Ethylene Diamine Tetraacetic Acid), 0.5-3% of a water-based quick-drying agent, 1.5%-4% of an addition agent and 20%-60% of deionized water. The special cleaning agent disclosed by the invention has the advantages that an environment-friendly requirement is met, the cleaning efficiency is high, and the special cleaning agent is suitable for rapidly cleaning resins, scaling agents, welding agents, thixotropic agents, thickening agents, active agents and other pollutants on the surfaces of various electronic circuit boards; the using temperature is 25 DEG C-38DEG C, and the special cleaning agent is directly cleaned under normal temperature and is also suitable for cleaning an ultrasonic washing machine.

The invention relates to a waterborne polyurethane emulsion coating and a method for preparing the same. The coating comprises the following components in percentage by weight: 20 to 40 percent of isophorone diisocyanate, 20 to 40 percent of polyester, 5 to 10 percent of hydrophilic chain extender, 2 to 10 percent of chain extender, 1 to 3 percent of crosslinking agent, 3 to 10 percent of neutralizing agent, and 0.5 to 8 percent of N-methylpyrrolidone. The preparation process comprises the steps of: preparing raw materials, dewatering polyester, synthesizing prepolymers, neutralizing prepolymer, extending chains and emulsifying. Compared with the prior art, the method has the advantage that high-boiling point solvents in small quantity are used and acetone is not used, so that the coating does not contain residual acetone, has good temperature endurance, weather resistance, stripping property and water resistance, and can be widely applied in the field of pack coatings.

A piperidine compound of the formula (I): ##STR1## wherein A is a fused aromatic ring; R is hydrogen, chloro or methoxy; X is (CH.sub.2).sub.n, which may be substituted, in which n is 0 or an integer of 1 to 10, --CH.ident.CH--, --C.ident.C--, --O--, --S--, --NH--, --N(COCH.sub.3)--, --N(COOC.sub.2 H.sub.5)--, --N(CHO)--, --N(CH.sub.3)--, --CO--, --SO--, or --SO.sub.2 --; Y is --CH.ident.CH--, --CH.sub.2 CH.sub.2 --, --CH.sub.2 CO--, --O--, --S--, --NH--, --OCH.sub.2 --, --SCH.sub.2 --, --NHCH.sub.2 --, --CH(OH)CH.sub.2 -- or --CH(OH)CH(OH)--; and Q is substituted or unsubstituted n-hexyl, carboxypropyl, ethoxycarbonylpropyl, cyanopropyl, cyclohexyl, phenyl, indanyl, naphthyl, tetrahydronaphthyl, benzocycloheptyl, piperidinyl, tetrahydroisoquinolinyl, indolyl, pyrolyl, furyl, thienyl, thiazolyl, oxazolyl or N-methylpyrolyl, wherein any one or more of the --(CH.sub.2)-groups of the hexyl, carboxypropyl, ethoxycarbonylpropyl and cyanopropyl groups may be replaced by --CH.ident.CH--, --C.ident.C--, --O--, --S--, --NH--, --N(COCH.sub.3), --N(COC.sub.2 H.sub.5)--, --N(CHO)--, --N(CH.sub.3), --CO--, --SO-- or --SO.sub.2 --, and wherein one or more of the --(CH.sub.2)-groups in X and Q may be substituted by --(CH.sub.2).sub.4 -- or --(CH.sub.2).sub.5 -- thereby forming a ring structure.

The invention discloses an anti-carbonization concrete tubular pile and a preparation method therefor. The anti-carbonization concrete tubular pile consists of the following raw materials in parts by weight: 10-16 parts of light calcium carbonate, 1-2 parts of wool grease, 0.7-2 parts of sodium lauroyl sarcosine, 20-30 parts of potassium feldspar powder, 3-4 parts of n-methyl pyrrolidone, 500-640 parts of ordinary silicate cement, 300-400 parts of yellow ground, 200-300 parts of gravels, 7-14 parts of a polycarboxylate water reducer, 0.1-0.2 part of dibenzoyl peroxide, 5-6 parts of maleic anhydride, 2-3 parts of polyethylene glycol monoethylether, 0.7-2 parts of sp-80, 50-70 parts of waste rubber powder, 0.1-0.2 part of triethylamine, 16-20 parts of polyethylene wax and 2-4 parts of polyvinyl butyral. The anti-carbonization concrete tubular pile can reduce quantity of harmful holes and defects in a concrete structure, reduces alkalinity of hydration products and promotes low-strength hydration products to transform into high-strength hydration products.

The invention provides a nano modified polyurethane adhesive which comprises the following components in parts by weight: 10-40 parts of polyester polyol, 10-60 parts of polyether polyol, 15-30 parts of isocyanate, 3-8 parts of dimethylolpropionic acid, 0.5-1.5 parts of N-methyl pyrrolidone, 2-4 parts of triethylamine, 0.3-1 part of nano-montmorillonite and 0.05-0.15 part of amine chain extender. The invention also provides a preparation method of the nano modified polyurethane adhesive. The prepared nano modified polyurethane emulsion is good in storage stability, high in solid content, high in adhesion strength and excellent in chemical property; and moreover, the method for preparing the nano modified polyurethane emulsion is simple in process, relatively low in cost, low-carbon and environment-friendly, smell is small, organic volatile matter content is small, no acetone is removed.

The invention relates to heat-resistant self-adhesive enamelled wire paint. The heat-resistant self-adhesive enamelled wire paint disclosed by the invention comprises the following raw materials in parts by weight: 160-350 parts of dimethylbenzene, 430-620 parts of N-methylpyrrolidone, 169-191 parts of polyetherimide resin, 10-18.3 parts of boron phenolic resin, 19-33.8 parts of phenol formaldehyde epoxy resin, and 0.2-0.3 part of a slipping agent. The heat-resistant self-adhesive enamelled wire paint disclosed by the invention has good heat resistance and wet-sticky-resistant property, and can meet production requirements under high-temperature and high-humidity weather conditions.

The invention relates to a waterborne polyurethane primer for coating a plastic film. The primer is prepared from the following raw materials in percentage by weight: 8 to 10 percent of diisocyanate, 12 to 16 percent of polyester polyol, 1 to 2.7 percent of hydroxycarboxylic acid compound, 2.3 to 4.2 percent of N-methyl ketopyrrolidine, 0.05 to 0.19 percent of preservative, 0.1 to 1.25 percent of chain extender, 1 to 3.13 percent of neutralizer and 73.9 to 80.7 percent of deionized water. Compared with the conventional waterborne polyurethane primer, the waterborne polyurethane primer has the advantages that after the waterborne polyurethane primer and a functional coating are coated sequentially, the waterborne polyurethane primer is high in bonding force (which can reach 2N/15mm), attractive in appearance, environment-friendly and safe, does not contain solvent residues and is particularly suitable for the field of coated films, and the adhesive force of the coating is high.