201 results about "Alkyl side chain" patented technology

The invention relates to an epoxy hardener, in particular to a non-ionic self-emulsifying aqueous epoxy hardener. The hardener is prepared according to the following steps: adopting hydrophobic alkylamine and hydrophilic diglycidol ether with low molecular weight for reaction so as to obtain a diepoxy compound which has epoxy groups at two ends and a middle nitrogen atom linked with a long hydrophobic alkyl side chain; and adopting alicyclic amine for reaction for purpose of sealing the ends or respectively using the alicyclic amine and hydrophilic amine to seal the two ends, and finally obtaining the amino-terminated non-ionic self-emulsifying aqueous epoxy hardener similar to the structure of surfactant. The hardener can be further mixed with deionized water so that a light-yellow aqueous epoxy resin hardener with 50-60 percent of solids content can be obtained. The hardener has good self-emulsifying effect, is well compatible with epoxy resin and has high stability and good flexibility and surface activating function. The hardener can be widely applied in materials such as aqueous epoxy resin paint, epoxy resin binding agent, aqueous epoxy grouting materials, and the like.

The present invention relates to a catalytic conversion process for producing more diesel and propylene, comprising contacting the feedstock oil with a catalyst having a relatively homogeneous activity in a reactor, wherein the reaction temperature, weight hourly space velocity and weight ratio of the catalyst/feedstock oil are sufficient to obtain a reaction product containing from 12 to 60% by weight of a fluid catalytic cracking gas oil relative to the weight of the feedstock oil; the fluid catalytic cracking gas oil is fed into the fluid catalytic cracking gas oil treatment device for further processing. Catalytic cracking, hydrogenation, solvent extraction, hydrocracking and process for producing more diesel are organically combined together, and hydrocarbons such as alkanes, alkyl side chains in the feedstocks for catalysis are selectively cracked and isomerized. Meanwhile, aromatics in the feedstocks, which enter into the diesel fraction, are minimized, and the retention of other components in the diesel fraction by the production of aromatics via the reaction such as aromatization and the like is avoided. While the feedstocks are converted into high cetane number diesel and propylene, the yields of dry gas and coke are significantly reduced, and the breaking tendency and consumption of the catalyst are decreased.

The invention discloses a long-branched-chain polysulfone anionic membrane and a preparation method thereof. The structure of the membrane material is disclosed in the specification. The preparation method comprises the following steps: polysulfone acylation, carbonyl reduction, quaternization, film formation, alkalification and the like. Compared with the traditional anion-exchange membrane sequentially subjected to quaternization and functionalization, the polysulfone anion-exchange membrane contains the long branched chain on the side chain, so that the hydrophilic group is far away from the hydrophobic polymer main chain, thereby enhancing the phase separation driving force in the film formation process, improving the connectivity of the ion channels in the membrane and further enhancing the hydroxide ion conductivity of the membrane. The long alkyl side chain can obviously reduce the degree of swelling of the quaternary ammonium salt membrane and reduce the nucleophilic attack of water or OH-. The long-branched-chain polysulfone anionic membrane can obtain higher ion conductivity on the premise of relatively lower water absorptivity, thereby solving the contradiction in the anionic membrane for a long time.

The invention discloses a method for removing sulfide and light dydrocarbon from natural gas by utilizing ionic liquid. The method comprises the following steps: taking the ionic liquid or a mixed solvent of the ionic liquid and a molecular solvent as an absorbent to contact with the natural gas and absorb the sulfide, the light dydrocarbon and the carbon dioxide in the natural gas so as to obtain absorption liquid and residual tail gas, wherein the light dydrocarbon is alkane or alkene containing C2-C4; and carrying out two-stage desorption on the absorption liquid so as to desorb the light dydrocarbon and the sulfide in sequence, wherein the absorbent obtained through the desorption is recycled. The method provided by the invention is used for removing the sulfide and the light dydrocarbon from the natural gas by taking the ionic liquid or the mixed solvent of the ionic liquid and the molecular solvent as the absorbent. The designed ionic liquid, the negative ion of which contains a long alkyl side chain, has high selective dissolving capacity for the gas such as hydrogen sulfide and light dydrocarbon and the selective dissolving capacity is superior to that of the conventional ionic liquid, so that the efficient removal of the sulfide and the recovery of the light dydrocarbon are realized.

The invention relates to a 2-methyl-3-alkyl imidazole onium salt polyarylether comb type polymer and a preparation method thereof, and belongs to comb type polymers and a preparation method thereof and anion-exchange membranes prepared from the comb type polymer. Ion exchange perssad connected to the comb type polymer is C2 and N3 substituted imidazolium salt, and compared with traditional quaternary ammonium salt and unsubstituted imidazolium salt, better alkali-resisting stability is achieved. In addition, the imidazolium salt polyarylether comb type polymer connected with hydrophobic side chains of different lengths is provided with an obvious hydrophilic/hydrophobic phase separation structure, and high ionic conductivity is achieved. Then, the hydrophobic long alkyl side chains achieving space expansion can protect the periphery of the ion perssad, the alkali-resisting stability of an anion-exchange membrane is further enhanced, the water absorption rate is low, and swelling of the membrane can be restrained.

The present invention relates to a benzoxazine resin/ionic liquid composition and preparation thereof, and a thermosetting resin composition containing the benzoxazine resin/ionic liquid composition, wherein a mass ratio of the ionic liquid to the benzoxazine resin is 0.1-50:99.9-50, the benzoxazine resin is a compound having a molecular structure containing a benzoxazine group or a substituted benzoxazine unit, a polymer or a mixture of the compound and the polymer, and the ionic liquid is an ionic liquid having an organic cationic alkyl side chain introduced with a functional group. According to the present invention, the ionic liquid is added to the composition, such that a curing temperature of the benzoxazine resin can be substantially reduced.

A lead-acid battery separator with ultralow resistivity results from high porosity, controlled pore (10) size distribution, and an ionic surfactant (14) with a long alkyl side chain (18) that is anchored to the polymer matrix (12) of a silica-filled polyethylene separator. The surfactant cannot be easily removed or washed away and thereby imparts sustained wettability to the separator. Controlling the number of, and volume occupied by, the pores (i.e., porosity) and pore size distribution of the separator contributes to a reduction in electrical (ionic) resistivity.

The invention relates to a functional ionic liquid and a preparation method thereof. The structural formula of the ionic liquid is disclosed in the specification, wherein X<-> is Cl<-> (chloride ion), [BF4]<-> (tetrafluoroborate ion), [PF6]<-> (hexafluorophosphate ion) or [Tf2N]<-> (bistrifluoromethanesulfonimide ion), and n=0-15. After being introduced to the cation alkyl side chain of the ionicliquid, a phenanthroline group can coordinate with some metallic ions to form metallic coordination compounds, and can absorb energy and transfer the absorbed energy to the metallic ions so as to coordinate with rare earth ions, thereby being used for preparing a rare earth compound/ionic liquid material. The prepared material has the advantages of colorful emitted light, high color purity, long fluorescence lifetime and high quantum efficiency, and is applicable to the fields of display, new light sources, X-ray intensifying screens and the like.

Synthetic base oil composition comprising dialkyl aromatic compound with alkyl side chain carbon number from C₁₀ to C₂₈, or preferably C₁₁ to C₂₄, or even more preferably, C₁₂ to C₁₈, wherein the branching characteristics of the alkyl side chain has a total methyl number (TMN) determined by C¹³ NMR spectroscopy to be from more than 2.1 to less than 3.5, or preferably from 2.15 to 3.25, or even more preferably from 2.2 to 3.0, or a branching index (BI) from more than 0.1 to less than 1.5, or more preferably, 0.15 to 1.25, or even more preferably, 0.2 to 1.0. The synthetic base oil composition has a combination of high viscometric index, low volatility, superior low temperature properties, and improved thermal/oxidation stability, and is particularly suitable to be used as a premium synthetic base stock, second base oil component, or additive for lubricant and additive package applications.

In a process for converting methane to alkylated aromatic hydrocarbons, a feed containing methane is contacted with a dehydrocyclization catalyst under conditions effective to convert said methane to aromatic hydrocarbons and produce a first effluent stream comprising aromatic hydrocarbons and hydrogen. At least a portion of said aromatic hydrocarbon from said first effluent stream is then contacted with an alkylating agent under conditions effective to alkylate said aromatic hydrocarbon and produce an alkylated aromatic hydrocarbon having more alkyl side chains than said aromatic hydrocarbon prior to the alkylating.

The invention relates to phase-change microcapsules with a solid-solid phase transition core material, and a preparation method thereof. The preparation method provided by the invention adopts a first coating and then in-situ polymerization method. A comb-type polymer with large amount of long-chain alkyl side-chain grafted on a main chain, such as polyacrylate, is adopted as a phase-change microcapsule core material; and a heat-resistant high-molecular material is adopted as a capsule wall for coating the core material, such that the phase-change microcapsule material is prepared. The phase-change microcapsule material is composed of a phase-change core material with polyacrylate with solid-solid phase transition property and with C12-C20 alkyl chain contained in the side-chain, and a melamine resin wall material with good heat resistance. The content of polyacrylate in the phase-change microcapsules is 5-80wt%. The phase-change microcapsules provided by the invention have good dimension controllability, and are in a monodisperse state. The heat resistance of the microcapsules is better than that of traditional phase-change microcapsules with small-molecular long-chain alkane as the core material. Therefore, application requirements by fields with higher requirements on heat resistance can be satisfied.

The invention discloses a combined process for conversion of C10+ heavy aromatics to light aromatics, and mainly provides a production process capable of processing C10+ heavy aromatics, especially C10+ heavy aromatics enriched in condensed-nuclei aromatics, with high C10+ heavy aromatics conversion rate, mixed xylene selectivity, C9 aromatic fraction selectivity and low aromatic loss, solving the problem that the C10+ heavy aromatics cannot be effectively utilized. The method comprises the following steps: firstly performing condensed-nuclei aromatics selective hydrogenation ring-opening reaction on the C10+ heavy aromatics having high condensed-nuclei aromatics content in a selective hydrogenation reactor so that the condensed-nuclei aromatics become mononuclear aromatics with alkyl side chain, feeding the product in a light reactor, performing alkyl transfer reaction of the mononuclear heavy aromatics and light aromatics and the non-aromatics cracking and aromatization reaction under the hydrogen atmosphere to finally realize the aim of high C10+ heavy aromatics conversion rate and high aromatics purity, and prolific high value-added mixed xylene and C9 aromatics fraction at the same time.

Liquid compositions for cleaning, in particular medical instruments and air conditioning surfaces, said composition excluding surfactants and comprising one or more enzymes including a protease and optionally a hydrolase, a solvent system including a water soluble glycol ether solvent, at least one anionic hydrotrope, and wherein the molar ratio of said at least one hydrotrope to said glycol ether in the composition is selected to preserve the activity of said one or more enzymes. The hydrotrope is advantageously an anionic hydrotrope selected from the group consisting of water soluble anionic hydrotropes of the formula (I) and having no alkyl side chain greater than six carbons in length, for example a xylene sulfonate or cumene sulfonate salt.

The invention provides a preparation method of macroporous long alkyl side chain acrylic acid ester-styrene-ethylene dimethacrylate crosslinking copolymerization microballoon. The invention relates to macroporous long alkyl side chain acrylic acid ester-styrene-ethylene dimethacrylate crosslinking copolymerization microballoon and a preparation method thereof. In the preparation method, oil-soluble benzoyl peroxide is an initiator, long alkyl side chain acrylic acid ester, styrene and ethylene dimethacrylate are monomers, a suspension polymerization method is employed, an aqueous solution containing a dispersant and salt is water phase, and the monomers containing the initiator and a pore forming agent are mixed as stable oil phase. Under protection of nitrogen, the oil phase is stirred and subjected to a polymerization reaction at a certain temperature, and a resultant is subjected to filtering, washing, Soxhlet extraction, and vacuum drying treatments to obtain the macroporous crosslinking copolymerization microballoon. The above synthetic method has the advantages of safety, easy separation of products, low production cost, easy control of temperature, stable product quality the like, and is suitable for large scale industrial production. Since having porous and hydrophobic characteristics, the hydrophobic macroporous microballoon disclosed in the invention has a substantial advantage in removing enriched hydrophobic organic pollutants in water, which is a prospective environment friendly adsorption material and can be effectively used for processing relative organic waste water. The hydrophobic macroporous microballoon also has potential application value in fields of catalyst and drug carrier, bioseparation and the like.

The present invention provides a fluid bearing unit capable of achieving lower torque and lower current consumption in comparison with a conventional bearing unit, and a spindle motor using the same. The present invention employs an ester derived from 1,5-pentanediol having one alkyl side chain and saturated monovalent fatty acid having 5 to 8 carbon atoms as a base oil of a lubricant with which a gap between a shaft and a sleeve is filled.

The invention relates to a method for improving the B acid content of ZSM-5 molecular sieves and realizing the yield increase of light olefins. Both iron and titanium used for ZSM-5 molecular sieves are modified to obtain a weight ratio of the iron and titanium elements in a modified molecular sieve of 0.3-3:1; the obtained catalyst are evaluated respectively by n-decane, isopropyl benzene, and Daqing heavy oil, and the B acid content in the ZSM-5 molecular sieve catalyst is demonstrated to be significantly increased after iron/titanium bimetallic modification; therefore the catalysis reactivity of the molecular sieve is improved, which represents that the conversion of long-chain alkanes and aromatic hydrocarbons with long-chain alkyl side chains such as isopropyl benzene can be effectively promoted so as to realize the effect of a significant increase of the yield of light olefins; and the invention has a positive significance on the research of preparing light olefins by the catalytic cracking of heavy oil raw materials.

It is intended to provide a low molecular weight adjuvant which can be administered safely without inducing skin irritation or the like by transdermal or transmucosal administration and is for enhancing immunogenicity of an antigen efficiently. It can be achieved by an immunostimulant adjuvant containing at least one substance selected from the group consisting of aliphatic alcohols, free fatty acids and fatty acid derivatives but does not contain a substance represented by the following formula.

(In the formula, R₃ and R₄ may be combined to form a cyclic ring, and R₁ and R₂ independently represent an alkyl side chain having 1 to 16 carbon atoms.)

The invention relates to a pure organic room-temperature phosphorescent material of a distorted donor-receptor structure and a preparation method and application of the pure organic room-temperature phosphorescent material. By simply establishing a pi-conjugated structure with a distorted donor-receptor structure, a pure organic room-temperature phosphorescent material which is long in light emission life and high in light emission efficiency can be prepared. The pure organic room-temperature phosphorescent material is simple in preparation method, low in raw material price, easy in raw material obtaining, small in reaction step, mild in reaction condition, high in yield and easy in industrialization; and by adopting the preparation method, different function groups can be introduced to the tail end of an alkyl side chain, and application of the pure organic room-temperature phosphorescent material in aspects such as organic electroluminescence devices, chemical sensation, biological imaging, data encryption and anti-fake marking can be promoted.

The invention provides a benzodithiophene-benzodi(benzothiadiazole) containing copolymer, preparation and application thereof. The benzodithiophene-benzodi(benzothiadiazole) containing copolymer is a compound P with a general formula shown as the specification, wherein R1 and R2 are alkyl of C1-C20, R3 and R4 are alkyl of C1-C20, alkoxy of C6-C16 or a thiophene derivative group, which has an alkyl side chain of C16, and n is an integer ranging from 1 to 100. The benzodithiophene-benzodi(benzothiadiazole) containing copolymer contains a new benzodi(benzothiadiazole) conjugated unit, the absorption spectrum of the copolymer undergoes red shift and has a high matching degree with a solar spectrum. Meanwhile, with a planar conjugated structure, the copolymer provided by the invention has the advantages of high charge carrier migration rate and high energy conversion efficiency, simple and controllable preparation method, and has good application prospects in polymer solar cells, organic light-emitting devices and other photoelectric material fields.

The invention provides a long side chain SEBS base alkaline polymer electrolyte membrane as well as a preparation method and application thereof. The SEBS base alkaline polymer electrolyte membrane has a long side chain structure, a positively-charged functional group in the structure is one of or more than two of quaternary ammonium salt, imidazolium salt, guanidine salt and DABCO (1,4-diazabicyclo (2.2.2) octane); the long side chain is an oxygen-containing long alkyl chain of C2-C8. The oxygen-containing long alkyl chain SEBS-base alkaline polymer electrolyte membrane prepared by the preparation method provided by the invention has better chemical stability in a high-temperature alkaline environment due to the selection of an SEBS main chain with good chemical stability and the design of a polymer molecular structure with the functional group away from the long side chain; the oxygen-containing long alkyl chain is prepared through reactant selection, reaction temperature control andoptimization of ratio among reactants; by further adopting a hot pressing or solvent evaporation method, the oxygen-containing long alkyl chain SEBS base alkaline polymer electrolyte membrane with auniform, smooth and compact surface can be prepared through controlling the casting temperature, a solvent or the pressure.

A method of making an ion triggerable cationic polymer by solution copolymerizing one or more vinyl-functional cationic monomers, one or more water insoluble or hydrophobic vinyl monomers with alkyl side chains up to 4 carbons long, and, optionally, a minor amount of one or more vinyl monomers with linear or branched alkyl groups longer than 4 carbons, alkyl hydroxy, polyoxyalkylene, or other functional groups. The solution polymerization is accomplished by free radical polymerization in a mixture of acetone and water.

The present invention relates to a benzoxazine resin/ionic liquid composition and preparation thereof, and a thermosetting resin composition containing the benzoxazine resin/ionic liquid composition, wherein a mass ratio of the ionic liquid to the benzoxazine resin is 0.1-50:99.9-50, the benzoxazine resin is a compound having a molecular structure containing a benzoxazine group or a substituted benzoxazine unit, a polymer or a mixture of the compound and the polymer, and the ionic liquid is an ionic liquid having an organic cationic saturated alkyl side chain. According to the present invention, the ionic liquid is added to the composition, such that a curing temperature of the benzoxazine resin can be substantially reduced.

A hydrodynamic bearing device being low in torque, low in power consumption, high in reliability and best suited for miniaturization and a spindle motor using the same. The hydrodynamic bearing device in accordance with the present invention, dynamic pressure generation grooves being provided on at least one of a shaft or a sleeve, and a lubricant being present in a clearance where the above-mentioned shaft and the above-mentioned sleeve are opposed to each other, is characterized in that the above-mentioned lubricant contains diesters obtained from a divalent alcohol having 4 to 8 carbon atoms and having no alkyl side chain at the β position and one or more kinds of saturated monovalent fatty acids having 9 to 13 carbon atoms.