82 results about "Lithium amide" patented technology

This invention relates to a non-aqueous electrolyte having high non-combustibility and a non-aqueous electrolyte secondary power source having high safety and exhibiting stable performance even under high load conditions or low-temperature conditions, and more particularly to a non-aqueous electrolyte characterized by comprising a cyclic phosphazene compound represented by the following general formula (I):(NPR2)n   (I)[wherein Rs are independently fluorine, an alkoxy group or an aryloxy group and n is 3-4], a non-aqueous solvent, LiPF6 and at least one lithium amide selected from the group consisting of Li(FSO2)2N, Li(CF3SO2)2N and Li(C2F5SO2)2N, as well as a non-aqueous electrolyte secondary power source comprising the non-aqueous electrolyte, a positive electrode and a negative electrode.

This invention provides a process for producing a 5-hydroxy-3-oxopentanoic acid, a useful pharmaceutical intermediate, easily from a readily available, inexpensive starting material without using any extraordinary production equipment such as a very-low-temperature reactor.Thus, this invention provides a process for producing a 5-hydroxy-3-oxopentanoic acidwhich comprises permitting a lithium amide to act upon a mixture of an acetic acid ester and a 3-hydroxypropionic acid derivative at not below −20° C.Further, this invention also provides a process for producing a 5-hydroxy-3-oxopentanoic acidwhich comprises treating a mixture of an acetic acid ester and a 3-hydroxypropionic acid derivative with a Grignard reagent to prepare a mixture of a compound and an acetic acid ester of the above formula (I),and permitting a lithium amide to act upon the mixture at a temperature not below −20° C.This invention provides a process for producing a 5-hydroxy-3-oxopentanoic acid, a useful pharmaceutical intermediate, easily from a readily available, inexpensive starting material without using any extraordinary production equipment such as a very-low temperature reactor. Thus, this invention provides a process for producing a 5-hydroxy-3-oxopentanoic acid which comprises permitting a lithium amide to act upon a mixture of an acetic acid ester and a 3-hydroxypropionic acid derivative at not below −20° C. Further, this invention also provides a process for producing a 5-hydroxy-3-oxopentanoic acid which comprises treating a mixture of an acetic acid ester and a 3-hydroxypropionic acid derivative with a Grignard reagent to prepare a mixture of a compound and an acetic acid ester of the above formula (I), and permitting a lithium amide to act upon the mixture at a temperature not below −20° C.<?insert-end id="INS-S-00001" ?>

The invention belongs to the field of lithium ion battery preparation, and particularly discloses a composite cathode pole piece of a lithium ion battery and the lithium ion battery thereof. The composite cathode pole piece is composed of a cathode pole piece, an organic lithium compound and inorganic lithium compound which are coated at both sides of the cathode pole piece. The inorganic lithium compound is a nitrogen-containing lithium compound, such as lithium nitride and lithium amide; the electronic conductivity and structural stability of the inorganic lithium compound are improved by using the nitrogen atom, and the lithium ion transmission rate during the charging and discharging processes is improved by using the lithium ion therein; the organic lithium compound, such as lithium acetate, lithium alkoxy, alkyl bislithium carbonate, can improve the compatibility between the material surface thereof and electrolyte, and the high-temperature stabilization performance; for the surface of the prepared composite cathode pole piece contains sufficient lithium ion, the cathode pole piece can avoid the formation of lithium dendrites of the lithium ion battery during the charging and discharging processes, and the improve the safety performance thereof; the prepared composite cathode pole piece is applied to the lithium ion battery, and the rate capability and safety performance of the lithium ion battery can be improved.

The invention provides a five-core tin (II) compound and a preparation method and an application thereof. A synthetic process of the compound comprises the following steps: under the protection of a nitrogen gas, adding trimethyl silicon-based benzene (phenyl) lithium amide to a reaction vessel, adding ethyl ether for dissolving, in a condition of an acetone bath, adding dimethylaminonitrile, reacting overnight, and adding SnCl2 in the condition of the acetone bath, slowly warming to a room temperature, reacting overnight, stewing, filtering, concentrating filtrate in vacuum, crystalizing in the room temperature, and separating out a colorless crystal, to obtain the five-core tin (II) compound, wherein a mole ratio of the trimethyl silicon-based benzene (phenyl) lithium amide, the dimethylaminonitrile and the SnCl2 is 1:1:1-1.25. The compound can be used as a catalyst, and used for catalyzing a reaction of generating guanidine by aniline and N,N'-diisopropyl carbodiimide addition, andhas better application prospect.

The invention discloses a package plastic film which comprises the following raw materials in parts by weight: 20-35 parts of PC (polycarbonate), 25-40 parts of APET (amorphous polyester), 18-26 parts of PLA (polylactic acid), 4-6 parts of 2-hydroxypropyl-beta-cyclodextrin, 5-11 parts of ASA (acetyl salicylic acid) high glue powder, 7-18 parts of polyamide wax powder, 2-8 parts of 4-dimethylamino isoamyl benzoate, 5-18 parts of trehalose, 5-11 parts of diacetyl tartaric acid ester of mono(di) glycerides, 11-18 parts of tartrate, 11-18 parts of bisphenol A cyanate ester, 4-10 parts of polybutylene terephthalate, 2-5 parts of 3,5-diaminobenzoic acid, 5-11 parts of petroleum coke and 0.1-0.5 part of lithium amide. The package plastic film has good tensile capacity and water resistance since the raw materials are compounded to exert a synergistic effect; the production cost is low; a production technology is simple; the industrial production is facilitated; and the package plastic film can be manufactured into various package bags, and has a higher practical value and a high market popularization value.

The invention belongs to the technical field of preparation of lubricating materials, and particularly relates to a preparation method of an anti-wear agent. The preparation method comprises the following steps: preparing anti-wear suspension by taking multi-walled carbon nanotubes as a raw material; mixing and heating microbial oil, ethyl palmitate, lithium amide and the like to obtain an esterification product; finally, distilling an antioxidant lubricating grease crude product to obtain antioxidant lubricating grease; subjecting rapeseed oleic acid, azelaic acid and neopentyl glycol which are used as raw materials to esterification to obtain mixed ester; adding the mixed ester into the anti-wear suspension to obtain the anti-wear agent. Aluminum in the anti-wear suspension in the anti-wear agent participates in a local metallurgical reaction to achieve surface modification so that the anti-friction and anti-wear effects are achieved; an aluminum oxide passivation film can be formedto improve extreme pressure lubricating and antioxidant performance. Through the high polarity of the antioxidant lubricating grease, the conversion rate of the calcite crystal form formed by calciumlignosulphonate is improved, and the high-temperature resistance and the self-repairing performance of a lubricant are improved, such that the prepared anti-wear agent has broad application prospects.