35 results about "Amide" patented technology

The invention discloses a simple and convenient synthesis method and application of waste grease based polyhydric alcohol. The synthesis method comprises the following steps: performing simple pretreatment such as filtration, dehydration and decoloration on waste grease, performing heating and stirring reaction with alkamine compounds, and performing amidation with free fatty acid in the waste grease and performing transesterification reaction with glyceride under heating conditions by using relatively high reaction activity of amino groups to form corresponding biological oil based polyhydric alcohol. The method disclosed by the invention is capable of achieving the purpose of turning waste into treasure by adopting the waste grease as a raw material, and an obtained polyhydric alcohol product has the characteristics of good biodegradability, simple and convenient preparation process, small emission of three industrial wastes, adjustable product structure and hydroxyl value, wide application range and low environmental influence level.

The invention discloses polymer functional graphene and a preparation method and application thereof. Graphene is connected with a polymer through the combination of at least one of imide, amide, ester groups and amidogen, wherein the polymer is a polymer at least containing one benzene ring and with the molecular weight of 200-500,000 and interacts with the graphene through covalent bonds, hydrogen bonds and/or pi-pi conjugation. The polymer functional graphene is excellent in dispersion property in non-polar solvents and excellent in dispersion stability, and cannot precipitate after long-time storage for multiple months; according to the adopted preparation method, the polymer with amidogen, hydroxyl and carboxyl reacts with epoxy, hydroxyl and the like on the graphene and then is subjected to covalent grafting on the surface of the graphene, and the grafting rate of the polymer reaches 30% or above. In addition, the obtained polymer functional graphene can be widely applied to lubricating oil, plastic, rubber, paints, adhesives, fibers and other fields, and has potential application value.

The invention is directed to oil soluble additive compositions, lubricating oil compositions, and additive concentrates comprising the salt of (1) a molybdenum oxide, sulfide, or oxysulfide and (2) an amide reaction product of a carboxylic acid component and a polyamine component wherein the charge mole ratio (CMR) of the carboxylic acid component to the polyamine component is about 2:1 to 1:1.

The invention discloses a purification method of 1,2-propylene amide. One from dihydric alcohol having 2-5 carbon atoms and triatomic alcohol having 2-5 carbon atoms or one from alcohol amines having 2-5 carbon atoms or dimethylsulfoxide or N-methyl-2-pyrrolidone is used as an extraction agent. A crude product of the 1,2-propylene amide and the extraction agent enter an extraction tower for extraction, then water are collected at tower top of the extraction tower. Kettle bottom material of the extraction tower enters a rectifying tower for rectification, then the 1,2-propylene amide is collected at tower top of the rectifying tower. Through use of the method, the 1,2-propylene amide and the water are separated in the process of preparation. Through use of the extraction agent, height of the tower and reflux ratio can be decreased and separation efficiency is enhanced. The extraction agent can be reused through simple separation, so that the energy consumption is greatly reduced and the production cost is also reduced. The method has the advantage of high separation efficiency, high purity of purification products, colorless and transparent products, and recycling extraction agent.

Disclosed for use in treating a metal, e.g., an alloy of silver as aforesaid, is a water-based composition comprising a treatment agent selected from an alkanethiol, alkyl thioglycollate, dialkyl sulfide or dialkyl disulfide and at least one of an amphoteric, nonionic or cationic surfactant in a concentration that is effective to solubilise the treatment agent. Preferably the composition comprises at least a non-ionic relatively hydrophobic surfactant e.g. cocamide DEA. The composition is particularly suitable for the treatment of Ag—Cu—Ge alloys.

The invention discloses a preparation method of a polytriazine alkali-resistant composite nanofiltration membrane. The alkali-resistant composite nanofiltration membrane is composed of a porous base membrane playing a supporting role and an ultrathin surface layer, the ultra-thin surface layer is prepared by the following steps: performing interfacial polymerization crosslinking reaction on a polyfunctional group crosslinking agent capable of reacting with amido (primary amine or secondary amine) and a triazine compound with at least two or more amido (primary amine or secondary amine) to form a nascent state nanofiltration membrane, and then performing post-crosslinking by adopting a novel crosslinking agent. According to the preparation method of the polytriazine alkali-resistant composite nanofiltration membrane, the nanofiltration membrane has excellent separation performance, compared with a traditional polypiperazine amide nanofiltration membrane, the alkali resistance of the nanofiltration membrane can be effectively improved through a unique triazine aromatic cross-linked structure, and the membrane can be suitable for systems such as decoloration and saline water separation.

The invention discloses a preparation method of a high-activity waterproof soap-free emulsion polymer. Raw materials for polymerization comprise: 7 to 19 parts of an amide hydrophilic monomer; 6 to 17parts of a soap-free amide hydrophilic monomer; 0.28 to 0.85 part of a chain transfer agent; 0.21 to 0.49 part of an initiator a; 2.3 to 4.5 parts of an initiator b; 9-18 parts of a soap-free alkyl hydrophobic monomer, 202-267 parts of an alkyl hydrophobic monomer, 3.4-7.8 parts of a cross-linking agent, 2.4-6.7 parts of a flexible small monomer, 5-16 parts of a polyether, 0.4-0.9 part of a graphene oxide functional monomer, 3.2-8.6 parts of a pH regulator, 9-20 parts of a neutralizer and the balance of water, wherein the total amount of the raw materials is 1000 parts. According to the invention, amide monomers and alkyl monomers are used as raw materials; soap-free emulsion polymerization method is adopted to obtain a self-made soap-free polymer for water resistance; and the soap-free polymer is reacted with other raw materials to synthesize an emulsion polymer waterproof coating. According to the method, adverse effects caused by emulsifiers are eliminated, graphene oxide is addedto improve the film-forming property and the film-forming strength of the coating, the added cross-linking agent enhances the density and the hardness of formed film, the cohesiveness is enhanced, andthe waterproof capacity and the weather resistance are improved.

The invention relates to a high-activity multifunctional laundry bead and a preparation method thereof, and belongs to the technical field of daily chemical detergents. The laundry bead is prepared from dodecyl benzene sulfonate, dodecyl benzene sulfonic acid monoethanol amine salt, oleic acid monoethanol amide polyoxyethylene ether, fatty acid methyl ester ethoxylate, amine oxide, an organic silicon compound, deionized water, propylene glycol, an re-deposition resistant agent, triisopropanol amine, an anti-cross-color agent, a bacteriostatic agent, a compound enzyme, a water softener, a fluorescent whitening agent, a preservative, citric acid, essence and perfume. The raw materials are uniformly mixed and stirred, the pH is adjusted, then discharging is carried out, and finally packagingis performed to obtain the laundry bead. By adding a little amount of solvent and the dissolving property of a nonionic surfactant, the active matter content of the laundry bead can reach 80% and is 3-4 times higher than that of a traditional detergent in the market.

The utility model discloses a heat-resistant vinyl aromatic monomer copolymer compounding method. The method used amine in the axe-type reaction device as the amine imide agent and enables the vinyl aromatic monomer - maleic anhydride unit opening ring of the maleic anhydride copolymer to become the maleic acid amide unit in the organic solution system; and then the vinyl aromatic monomer is arranged in the axe-type reaction device or in a exhaust twin-screw extruding device for reaction. Then the vinyl aromatic monomer is gotten rid of organic solution and is dried to generate heat-resistant vinyl aromatic monomer copolymer. The heat-resistant vinyl aromatic monomer copolymer generated in the method is of good anti heat resistance, thermal stability, processing mobility as well as compatibility with polar material.

The invention discloses a quick-drying stable antirust oil. The quick-drying stable antirust oil is prepared from the following raw materials by weight: 63 to 70 parts of base oil SN150, 2 to 4 parts of terpene resin, 1 to 2 parts of triallyl cyanurate, 0.7 to 2 parts of 2-mercaptobenzothiazole, 0.2 to 0.5 part of sodium carbonate, 1 to 2 parts of isobutanol, 0.4 to 1 part of magnesium naphthenate, 5 to 7 parts of lanolin, 1 to 2 parts of lauric diethanolamide, 1 to 2 parts of 1,2-epoxybutane and 5 to 6 parts of an antirust aid. The antirust oil provided by the invention has actual drying time of 0.5 to 2 h; an antirust film is bright and transparent and hardly undergoes color changing and oxidation; a coating of the antirust oil is stable, has high salt fog resistance, resistance to dampness and heat, aging resistance and the like and exerts a good protection effect on a substrate.

A polysiloxane includes a structural unit in which a functional group represented by a general formula of

(in the formula, each of R¹, R², and R³ is independently an alkyl group with a carbon number of 1 or more and 6 or less and m is an integer of 2 or more and 6 or less), an ester bond or an amide bond, a spacer, and a silicon atom are bonded sequentially.

A process for the preparation of an enantiomerically enriched amine, is performed by a) cleaving a racemic mixture of a reaction product of i) a chiral amine and ii) an acyl donor, in the presence of a hydrolase, to obtain a mixture of an enantiomerically enriched amide and an enantiomerically enriched amine; or b) reacting an amine with an acyl donor, in the presence of a hydrolase, to obtain a mixture of an enantiomerically enriched amide and an enantiomerically enriched amine; and c) separating the enantiomerically enriched amide from the enantiomerically enriched amine, wherein the acyl donor is a sulphonylacetic acid ester. The process (1) leads to high enantioselectivities, and (2) high reactivities, (3) is based on an acyl donor accessible in a simple manner, (4) is suitable for a large number of very different substrates and/or (5) is suitable for carrying out at high substrate concentrations.

The invention discloses a quinolizine aza-bis-aromatic ring axial chiral compound and a synthesis method of the quinolizine aza-bis-aromatic ring axial chiral compound. The method comprises the following steps: firstly obtaining an intermediate from raw materials substituted 1-naphthyne and methyl chloroformate under the action of lithium diisopropylamide, then generating a precursor from the intermediate and 2-methylpyridine under the action of lithium diisopropylamide, and finally reacting the precursor under the action of CuCl and a chiral phosphamide ligand to obtain the quinolizine aza-bis aromatic ring axial chiral compound. The method disclosed by the invention is mild in reaction condition and extremely high in yield and enantioselectivity, the quinolizine aza-bis-aromatic ring axial chiral compound taking quinolizine as a matrix is synthesized for the first time, and the range of the aza-axial chiral compound is greatly expanded.

The invention belongs to the technical field of release films, and particularly relates to a preparation method of a PET release film. The preparation method comprises the following steps: (1) preparation of an anti-scratch agent: a, preparing amino-modified silicon dioxide nanoparticles; b, preparing a maleic anhydride polyacrylate precipitate; and c, carrying out a grafting amidation reaction on the amino-modified silicon dioxide nanoparticles and the maleic anhydride polyacrylate precipitate; (2) preparation of a release agent: taking organic silicon resin, polyvinyl alcohol, simethicone, a photoinitiator and the anti-scratch agent, and carrying out stirring and uniform mixing; and (3) preparation of the film: performing corona treatment on a PET base film, coating a corona surface with the release agent, and performing radiation curing by using ultraviolet light, thereby obtaining the film. The method is simple in process and easy to operate, and the PET release film prepared by the method has good scratch resistance and wear resistance, moderate peel strength, certain antistatic property and good stability.

The invention discloses a preparation method of a mixed-mode liquid chromatography filler based on a single selector. The method comprises the following steps: firstly obtaining silane with amide/amine multiple polar groups through a selective amidation technology, then immobilizing the silane on silica gel, and finally masking residual silicon hydroxyl by using a conventional alkaline small-molecular end-capping agent to prepare a class of novel high performance liquid chromatography stationary phases. According to the method disclosed by the invention, the adopted selective amidation has reaction specificity, the preparation process adopts a one-pot multi-step reaction method, the use amount of a solvent is reduced, the surface chemical property of the obtained filler is homogeneous, the filler has remarkable alkalinity and excellent hydrophilicity, and the problems that the conventional mixed mode filler is non-homogeneous and is disordered in application, and the defects that a conventional mixed mode filler is heterogeneous, mixed and disordered during application, and unstable in batch repeatability and chromatographic reproducibility of the filler are overcome.

The invention discloses an amide hydrodeoxygenation method, which is characterized in that under the catalytic action of a multi-component metal oxide catalyst, amide and hydrogen are subjected to a hydrodeoxygenation reaction to generate a corresponding amine compound, and the multi-component metal oxide catalyst is prepared by a coprecipitation method. The active components comprise copper oxide, zinc oxide, molybdenum trioxide, magnesium oxide and aluminum oxide in a mass percentage ratio of (25-40): (10-20): (1-5): (5-15): (20-50). The method has the advantages of simple reaction process, high reaction conversion rate, high selectivity and simple catalyst preparation process, and can be used for industrial production.

The invention discloses a preparation method of a tertiary amide compound, and belongs to the field of organic synthesis. The tertiary amide compound represented by formula (I) is prepared by directlycoupling an aryl formamide compound represented by formula (II) with a p-toluenesulfonylhydrazone compound represented by formula (III) under the action of a specific copper catalyst and an alkali reagent without ligand participation and a high-temperature reaction system. The method is green, simple and convenient, and the yield of the tertiary amide compound can reach about 82%.

The invention belongs to the field of water environment treatment, and particularly relates to a preparation method and application of a hydroxyethyl cellulose modified scale inhibitor capable of effectively inhibiting silicon dioxide scale bodies in a green and efficient manner. The green modified cellulose scale inhibitor is prepared by taking hydroxyethyl cellulose as a raw material, ammonium persulfate as an initiator and N-(3-dimethylaminopropyl) methacrylamide as a grafting monomer through a grafting reaction. According to the method, a grafting chain containing an amide group and a tertiary amine group can be introduced to a cellulose molecular chain, so that scale forming substances can be effectively dispersed, and the efficient environment-friendly scale inhibitor is obtained. The scale inhibitor prepared by the invention can effectively inhibit the generation of scale bodies and prevent the size of the scale bodies from being increased; when the scale inhibitor is applied to a reverse osmosis system, the reduction of membrane flux is effectively relieved, and the membrane has a good application prospect in controlling silicon dioxide scaling on the surface of the reverse osmosis membrane.

The invention discloses a synthesis method of a micafungin side chain intermediate. An important side chain intermediate for synthesizing micafungin can be obtained through only three steps, and the steps are simple. Firstly, 4-pentoxyl acetophenone and methyl p-formylbenzoate as initial raw materials are subjected to an aldol condensation reaction under the action of an alkali catalyst cesium carbonate to obtain an intermediate M1; then, the intermediate M1 and N-hydroxyl p-toluenesulfonamide are cyclized under the action of the alkali catalyst cesium carbonate to obtain an intermediate M2; and finally, transesterification reaction is carried out on the intermediate M2 and 1-hydroxybenzotriazole to obtain the high-purity micafungin side chain intermediate shown in the formula M (See the specification). A brand-new synthesis route is provided, and a foundation is laid for preparation of a final product micafungin.

The invention relates to a crosslinked polyethylene insulated environment-friendly rat-proof and termite-proof flame-retardant control cable, and belongs to the technical field of cables. The cable comprises a copper conductor, the outer surface of the copper conductor is coated with a cross-linked polyethylene insulating layer, the copper conductor and the cross-linked polyethylene insulating layer form one cable core, seven cable cores form a group, the outer layer of the group of cable cores is wound by a polyester tape to form a wrapping polyester tape layer, the outer layer of the wrapping polyester tape layer is coated with a copper wire braid layer, and the outer surface of the copper wire braid layer is coated with a rat-proof and termite-proof flame-retardant polyolefin sheath; the rat-proof and termite-proof flame-retardant polyolefin sheath is made of a rat-proof and termite-proof flame-retardant polyolefin material, and a rat-proof and termite-proof agent is added in the process of preparing the rat-proof and termite-proof flame-retardant polyolefin material. A rat-proof and termite-proof component in the prepared rat-proof and termite-proof agent is a vanillin nonanoate amide rat-proof and termite-proof agent and belongs to synthetic capsaicin. Compared with the prior art, the rat-proof and termite-proof agent has the advantages that the rat-proof and termite-proof effect can be achieved, and a certain flame-retardant effect is achieved.

The invention relates to a water-resistant PVA film, the front and back surfaces of which are both coated with two layers of RTV, i.e. an inner layer RTV and an outer layer RTV respectively. Specifically, the inner layer RTV and the outer layer RTV are prepared from the following components by mass: 80-100 parts of polysiloxane; 2-4 parts of a cross-linking agent; and 0.05-0.2 part of a catalyst;the types of the inner layer RTV and the outer layer RTV are respectively selected from deacetic acid type RTV, deketoxime type RTV, dealcoholization type RTV, deacetone type RTV or deamidation type RTV, and the inner layer RTV and the outer layer RTV are different. The water-resistant PVA film adopted by the invention has excellent water resistance, the tensile properties of PVA are not obviouslyreduced after long-time water immersion compared with that before water immersion, and the tensile strength variation after water immersion is obviously lower than that of other similar products; also the water-resistant PVA film has good stability, does not have defect points due to shrinkage and cracking along with changes of the external environment; and the storage, transportation and use environments are relatively loose.

The invention is directed to methods and compositions for chemical ligation of a first component that includes a carboxythioester and a second component that includes an amino-functionalized compound bearing a branched side chain that includes a removable thiol auxiliary, to give a ligation product having an amide bond at the ligation site. The reactants of the invention are chemoselective and the thiol moiety is removable from the ligation product. Removal of the thiol can be exploited to generate a native side chain at the ligation site. The methods and compositions of the invention are particularly useful for ligation of peptides and polypeptides. The ligation system of the invention is applicable to a wide variety of molecules, and thus can be exploited to generate peptides, polypeptides and other amino acid containing polymers.