149 results about "Imidazolidines" patented technology

This invention provides a catalyst system useful in many coupling reactions, such as Suzuki, Kumada, Heck, and amination reactions. The catalyst system of the present invention makes use of N-heterocyclic carbenes or their protonated salts. The composition of the catalyst system comprises at least one transition metal compound and at least one N-heterocyclic carbene or its protonated salt. This invention further provides novel N-heterocyclic carbenes and their protonated salts. One type of N-heterocyclic carbene used in this invention is an imidazolinc-2-ylidene wherein the 1 and 3 positions are each, independently, substituted by an aromatic group in which each ortho position is, independently, substituted by a secondary or tertiary group which has at least three atoms.

The invention discloses a sterilizing and algae-removing agent and an application thereof. The sterilizing and algae-removing agent consists of the following components in parts by weight: 100 parts of dodecyl dimethyl benzyl ammonium chloride, 4-6 parts of sulfamic acid, 60-80 parts of isothiazolinone, 10-20 parts of crylic acid-acrylic ester-sulfonate terpolymer, 60-80 parts of attapulgite clay, 0.2-0.4 parts of 4,4' dichloro-2-hydroxy diphenyl oxide, 4-6 parts of dodecyl ethoxy imidazolidine, 10-18 parts of sodium dichloro isocyanurate, 10-18 parts of methane dithiocyanate and 1-2 parts of epoxiconazole. The sterilizing and algae-removing agent has the advantages of efficient sterilizing and algae-removing performance, small using amount, safety, nontoxicity and environmental friendliness. The sterilizing and algae-removing agent is applied to sterilizing treatment of a circular water system.

The invention discloses a cream for chap removal, which is composed of a water phase, an oil phase and a functional phase, wherein in parts by weigh, the water phase is composed of 45-85 parts of water, 0.1-0.5 part of allantoin and 0.05-0.2 part of diazolidinyl urea, the oil phase is composed of 0.5-1.5 parts of cetostearyl alcohol, 1-3 parts of glyceryl stearate, 0.5-1.5 parts of PEG-100 stearate, 2.5-5 parts of glycerin, 1-5 parts of polydimethylsiloxane, 2.5-5 parts of propylene glycol, 1-3 parts of isopropyl palmitate, 1-3 parts of petrolatum, 0.5-1.5 parts of polysorbate-60, 5-15 parts of mineral oil, 0.1-0.3 part of methylparaben, and 0.05-0.15 part of propyl hydroxybenzoate; and the functional phase is composed of 1-4 parts of one or more of ammonium polyacrylate, C13-16 isoparaffin, and laureths-25, 0.15-0.45 part of essence and 0.25-0.75 part of vitamin E. Experiments show that the cream both has the functions of water locking and moisturizing and has the effects of chap prevention and chap removal, therefore, the cream has a good market prospect.

Pressure-sensitive adhesive compositions that resist water-whitening are provided. The compositions comprise emulsion copolymers formed from a plurality of monomers that includes a plurality of (meth)acrylic monomers, at least one trifluoroalkyl(meth)acrylate monomer, and at least one alkylimidazolidone (meth)acrylate monomer. Preferably, the (meth)acrylic monomers comprise a plurality of soft monomers, at least one hard monomer and at least one acid monomer. The plurality of monomers may further include at least one aliphatic urethane di(meth)acrylate, an oligomer. The pressure-sensitive adhesive composition also comprises a surfactant system including at least one surfactant.

This invention provides a process for conducting Kumada coupling reactions. The processes of the present invention make use of N-heterocyclic carbenes as ancillary ligands in Kumada couplings of aryl halides. A Kumada coupling can be carried out by mixing, in a liquid medium, at least one aryl halide, wherein the aryl halide has, directly bonded to the aromatic ring(s), at least one halogen atom selected from the group consisting of a chlorine atom, a bromine atom, and an iodine atom; at least one Grignard reagent; at least one metal compound comprising at least one metal atom selected from nickel, palladium, and platinum, wherein the formal oxidation state of the metal is zero or two; and at least one N-heterocyclic carbene. One preferred type of N-heterocyclic carbene is an imidazoline-2-ylidene of the formulawherein R1 and R2 are each, independently, alkyl or aryl groups having at least 3 carbon atoms, R3 and R4 are each, independently, a hydrogen atom, a halogen atom, or a hydrocarbyl group. Homocoupling of aryl pseudohalides is also feasible using the processes of this invention.

This invention provides a process for conducting amination reactions. The processes of the present invention make use of N-heterocyclic carbenes as ancillary ligands in aminations of aryl halides and aryl pseudohalides. An amination can be carried out by mixing, in a liquid medium, at least one strong base; at least one aryl halide or aryl pseudohalide in which all substituents are other than amino groups, wherein the aryl halide has, directly bonded to the aromatic ring(s), at least one halogen atom selected from the group consisting of a chlorine atom, a bromine atom, and an iodine atom; at least one primary amine and/or at least one secondary amine; at least one metal compound comprising at least one metal atom selected from nickel, palladium, and platinum, wherein the formal oxidation state of the metal is zero or two; and at least one N-heterocyclic carbene. One preferred type of N-heterocyclic carbene is an imidazoline-2-ylidene of the formulawherein R1 and R2 are each, independently, alkyl or aryl groups having at least 3 carbon atoms, R3 and R4 are each, independently, a hydrogen atom, a halogen atom, or a hydrocarbyl group.

The invention discloses a flame-retardant steel surface coating material and a preparation method thereof. The flame-retardant steel surface coating material is prepared from the following components in parts by weight: 35-48 parts of polyacrylamide, 5-9 parts of zinc oxide, 0.05-0.2 part of ammonium polyphosphate, 0.05-0.1 part of dibutyltin maleate, 0.03-0.1 part of diazolidinyl urea, 0.02-0.04 part of silane coupling agents, 0.01-0.2 part of antioxidants and 15-20 parts of 1,2-pentanediol. The invention also provides the preparation method of the flame-retardant steel surface coating material. The flame-retardant steel surface coating material prepared through the method disclosed by the invention not only has good flame-retardant property, but also has good scraping resistant property and antibacterial property. The flame-retardant steel surface coating material prepared through the method disclosed by the invention can be widely applied to the surfaces of a household appliance, an instrument, a meter, air purifying equipment and water purifying equipment.

The present invention provides a process for producing methionine which is advantageous from the viewpoints of cost and wastewater disposal, and which comprises the following steps (1) to (5):

(1) a reaction step comprising hydrolysis of 5-[2-(methylthio)ethyl]imidazolidine-2,4-dione in the presence of a basic potassium compound;

(2) a first crystallization step comprising introduction of carbon dioxide into the reaction solution obtained in the step (1) to precipitate methionine, and separation of the resultant slurry into a precipitate and a mother liquor;

(3) a second crystallization step comprising concentration of the mother liquor obtained in the step (2), mixing with a lower alcohol, introduction of carbon dioxide into the mixture to precipitate methionine and potassium hydrogen carbonate, and separation of the resultant slurry into a precipitate and a mother liquor;

(4) a heating step comprising concentration of the mother liquor obtained in the step (3) followed by a heating treatment at 150 to 200° C.; and

(5) a third crystallization step comprising introduction of carbon dioxide into the heated mother liquor obtained in the step (4) to precipitate methionine and potassium hydrogen carbonate, and separation of the resultant slurry into a precipitate and a mother liquor.

The invention relates to nitroimidazoline derivatives. The nitroimidazoline derivatives have a structural formula shown in a formula I, wherein R is substituted benzene, naphthalene, benzoxazole or benzimidazole. The preparation method comprises that different substituted chloromethylene compounds, N-nitroimidazoline, potassium carbonate and solvent are reacted to form the nitroimidazoline derivatives. The nitroimidazoline derivatives have the advantages that: 1) the synthetic method for the nitroimidazoline derivative compounds is simple; and 2) the nitroimidazoline derivative compounds have a structure different from that of imidacloprid and have high insecticidal activity, the structure of the compounds does not comprise pyridine rings, and the compounds have wide development prospect.

The invention discloses a coating and a preparation method thereof. The coating is prepared from raw materials in parts by mass as follows: 20-30 parts of waterborne resin, 10-15 parts of a polyurethane emulsion, 10-15 parts of diatomaceous earth, 8-15 parts of rare earth, 3-8 parts of polyacrylamide, 2-4 parts of imidazolidine, 0.5-1 part of hydroxymethyl cellulose, 1-3 parts of a nano-assistant, 5-10 parts of an adsorption auxiliary, 1-3 parts of a bactericide, 0.5-1 part of a film forming agent, 0.3-1 part of an antifoaming agent, 0.5-1 parts of a leveling agent, 0.2-0.5 parts of a wetting agent, 0.5-1 part of a dispersion agent, 0.4-1 part of a thickening agent, 2-4 parts of titanium dioxide and 20-30 parts of deionized water. The invention further discloses a preparation method. The coating and the preparation method have the benefits as follows: the prepared coating can prevent dust and keep clean after being applied to a wall, the inconvenience caused by dust accumulation is avoided, long-time cleanness is realized, and the toxic substances in air are purified.

The present invention relates to new compounds of formula (I), wherein R¹ to R⁹ and X are as defined as in formula I, or salts, solvates or solvated salts thereof, processes for their preparation and to new intermediates used in the preparation thereof, pharmaceutical formulations containing said compounds and to the use of said compounds in therapy.

The invention relates to an air purifying liquid and a preparation method thereof. The air purifying liquid comprises the raw materials in parts by weight: 1 to 50 parts by weight of glycerol, 1 to 15 parts by weight of polyethylene glycol, 0.5 to 5 parts by weight of dendrimers, 0.1 to 5 parts by weight of an imidazole cation liquid, 0.5 to 10 parts by weight of imidazolizone, 0.1 to 5 parts by weight of a pH regulator, and the balance deionized water. The preparation method comprises the steps: adding glycerol and polyethylene glycol into deionized water, and stirring until the solution is uniform and transparent; adding the dendrimers in the formed uniform and transparent solution, and stirring until the solution is uniform and transparent; adding the pH regulator to adjust the solution pH to 6.5-8.5, and stirring uniformly; and adding the imidazole cation liquid component and imidazolizone, and stirring uniformly, to obtain the purifying liquid finished product. The air purifying liquid is convenient to use: the air purifying liquid is injected into a spray bottle for operating, and is simple and convenient; the air purifying liquid is safe and reliable: the air purifying liquid is safe to human bodies and has no damage to objects; and the air purifying liquid has high purification efficiency: the air purifying liquid has the purification ability on formaldehyde and TVOCs more than or equal to 90%.

The invention discloses a full-biodegradable plastic composite modified material suitable for a film bag. The full-biodegradable plastic composite modified material is mainly prepared from the following raw materials in percentage by mass: 25-30% of poly (butylene adipate-co-terephthalate); 25-30% of poly (butylene succinate); 10-15% of polylactic acid; 25-30% of calcium carbonate; and 4-6% of an auxiliary agent. The auxiliary agent is maleic anhydride, 2-imidazolidone and a copolymer of styrene and glycidyl acrylate. The composite modified material has excellent mechanical properties, high tensile strength and elongation at break, and good transparency, stiffness and printability. The invention further discloses a preparation method of the composite modified material. The method can prevent the degradable resin from being coked in the processing process, and the quality of the full-biodegradable plastic composite modified material is improved.

The present invention relates to the use of specific metal complexes of dithiolenes with aryl or heteroarylsubstituted imidazolidine-2-chalcogenone-4,5-dithione ligands as colourless IR absorbers.

The new benzoyl urea derivatives of formula (I) wherein the meaning of X and Y independently are hydrogen atom, hydroxy, benzyloxy, amino, nitro, C₁-C₄ alkylsulfonamido optionally substituted with a halogen atom or halogen atoms, C₁-C₄ alkanoylamido optionally substituted with a halogen atom or halogen atoms, C₁-C₄ alkoxy, aroyl-carbamoyl optionally substituted with halogen atom or C₁-C₄ alkyl or C₁-C₄ alkoxycarbonyl group, or the neighboring X and Y groups optionally form together with one or more identical or different additional hetero atom and —CH═ and/or —CH₂— groups an optionally substituted 4-7 membered homo- or heterocyclic ring, preferably morpholine, pyrrole, pyrrolidine, oxo- or thioxo-pyrrolidine, pyrazole, pyrazolidine, imidazole, imidazolidine, oxo- or thioxo-imidazole or imidazolidine, 1,4-oxazine, oxazole, oxazolidine, triazole, oxo- or thioxo-oxazolidine, or 3-oxo-1,4-oxazine ring, V and Z independently are hydrogen or halogen atom, cyano, C₁-C₄ alkyl, C₁-C₄ alkoxy, trifluoromethyl, hydroxy or optionally esterized carboxyl group, W is oxygen atom, as well as C₁-C₄ alkylene, C₂-C₄ alkenylene, aminocarbonyl, —NH—, —N(alkyl)-, —CH₂O—, —CH₂S—, —CH(OH)—, —OCH₂— group, wherein the meaning of alkyl is a C₁-C₄ alkyl group—, when the dotted bonds () represent simple C—C bonds then U is hydroxy group or hydrogen atom or when W is C₁-C₄ alkylene or C₂-C₄ alkenylene group, then one of the dotted bonds () can represent a further double C—C bond and in this case U means an electron pair, which participate in the double bond and optical antipodes, racemates and the salts thereof are highly effective and selective antagonists of NMDA receptor, and moreover most of the compounds are selective antagonist of NR2B subtype of NMDA receptor. Furthermore objects of the present invention are the pharmaceutical compositions containing new benzoyl urea derivatives of formula (I) or optical antipodes or racemates or the salts thereof as active ingredients and processes for producing these compounds and pharmaceutical compositions.

The invention discloses whitening moisturizing cleaning cream and a preparation method thereof. The whitening moisturizing cleaning cream is mainly prepared from the following materials in parts by weight: white fungus extracts, coix seed oil, orchid extracts, acetyl chitosamine, arbutin, cocamidopropyl betaine, sodium laureth sulfate, acrylicester copolymer, propanetriol dioctadecanoate, EDTA disodium, hydroxypropyltrimethyl ammonium chloride hyaluronic acid, 1,3-butanediol, imadazolidinyl urea, water and extracting solution of Chinese traditional medicine; the extracting solution of the Chinese traditional medicine is prepared by mixing curcuma, nux vomica, dried rehmannia root, cynanchum atratum and herba leonuri according to a mass ratio of 3:5:9:15:12, adding ethyl alcohol to the mixture, and performing reflux extraction. The prepared whitening moisturizing cleaning cream can penetrate into the skin to reduce existing melanin, activate cells and remove facial spots, has functions of repairing the epidermis, increasing the water content of the epidermis and increasing the water content of the cuticle, and ensures that the skin is exquisite, white and moistened.

The invention provides a method for producing a fullerene through macroscopic quantity separation of a hydrocarbon system and relates to a method for producing fullerene. A crude fullerene sample undergoes ultrasonic washing and is filtered to obtain a refined fullerene sample, and toluene is added and dissolved; under nitrogen protection, 2-methyl-2-fosthiazate is added into the solution to react and reacts with high fullerenes C76, C78 and C84 to form sediment, the solution is filtered to obtain sediment A and filtrate A, and the sediment A undergoes pyrolysis under N2 protection to obtain high fullerenes C76, C78 and C84; 2-methyl-2-imidazolidine is added into the filtrate A; 2-methyl-2-imidazolidine reacts under nitrogen protection and then form sediment together with fullerenes C60 and C70, and the solution is filtered to obtain sediment B and filtrate B; the sediment B undergoes pyrolysis under N2 protection to obtain fullerenes C60 and C70; with toluene as a solvent, a product after the pyrolysis undergoes three-step high-temperature and low-temperature recrystallization to obtain fullerenes C60 and C70; and the filtrate B undergoes fullerene chromatographic separation and purification to obtain a pure fullerene hydride.