42 results about "Diphenolic acid" patented technology

The invention discloses a method for preparing diphenolic acid in ionic liquid, which comprises the following steps in sequence: (1) uniformly mixing levulinic acid, carbolic acid and the ionic liquid to obtain mixture, wherein the structure of the ionic liquid at least contains one acidity group; and (2) conducting nucleophilic addition on the mixture to obtain diphenolic acid mixed liquor. Positive ions of the ionic liquid is selected from alkyl imidazole positive ions, sulfoacid substitution alkyl imidazole positive ions, allyl imidazole positive ions, alkyl pyridine positive ions and one of sulfoacid substitution alkyl pyridine positive ions, sulfoacid substitution alkyl urotropin positive ions and sulfoacid substitution alkyl triethylene diamine positive ions. The method adopts the ionic liquid to serve as a catalytic agent and reaction solvent and is not only simple and convenient in operation, soft in conduction, environment-friendly, low in equipment corrosivity, stable in performance and capable of repeatedly using, and the ionic liquid is easy to recover.

The invention discloses a colloidal gold chromatography test paper strip for quickly detecting bisphenol A and a preparation method thereof, and belongs to the technical field of detection of biological immunization methods. The detecting test paper strip consists of a lining board, and a sample pad, a gold labeled combining pad, an enveloping film and a water absorbing pad, which are orderly connected on the lining board, wherein the gold labeled combining pad is glass fiber wool adsorbing gold-labeled antibodies of the bisphenol A; and the enveloping film is provided with a linear invisible test line T line which is printed by carrier protein solution coupled by diphenolic acid, and a linear invisible contrast line C line which is printed by sheep anti-rabbit IgG solution, and the two lines are parallel. The test paper strip has strong specificity, high sensibility with the lowest detection limit of 5ppb, simplicity, convenience, quickness and strong timeliness, does not need any other reagents and instruments, can be operated in field, can determine a detection result in 15 minutes after being put into tested sample solution, has vivid, directviewing and accurate result display, saves cost, has wide applicable range and contributes to promotion.

A liquid potting composition, a semiconductor device manufactured using such composition and a process for manufacturing a semiconductor device using such composition. The liquid potting composition comprises: (a) a liquid epoxy resin; (b) a hardener comprising a multi-hydroxy aromatic compound containing at least two hydroxy groups and at least one carboxyl group; and (c) an accelerator. Suitable hardening agents include 2,3-dihydroxybenzoic acid; 2,4-dihydroxybenzoic acid; 2,5-dihydroxybenzoic acid; 3,4-dihydroxybenzoic acid; gallic acid; 1,4-dihydroxy-2-naphthoic acid; 3,5-dihydroxy-2-naphthoic acid; phenolphthaline; diphenolic acid and mixtures thereof.

The invention discloses a high molecular weight polyether sulphone polymer with a side group containing carboxyl and a preparation method of the high molecular weight polyether sulphone polymer with the side group containing the carboxyl. The preparation method comprises the steps that by adopting compound alkali and an inertia double-solvent, solution polycondensation is carried out on 4,4'-dichloro diphenyl sulfone and a diphenolic acid monomer, so that the high molecular weight polyether sulphone polymer with the side group containing the carboxyl is obtained. The high molecular weight polyether sulphone polymer with the side group containing the carboxyl has the advantages that weight-average molecular weight is 1000-150000 and tensile strength is 30-120MPa, and the high molecular weight polyether sulphone polymer with the side group containing the carboxyl has high molecular weight, easy film formation, good mechanical property, good thermal stability and high glass transition temperature; adsorbing capacity of the high molecular weight polyether sulphone polymer with the side group containing the carboxyl to Cu<2+> when pH is 1-7 is 0.02-2mmol/g, the high molecular weight polyether sulphone polymer with the side group containing the carboxyl can be reused after being regenerated, the adsorption rate of the regenerated polymer to Cu<2+> is still more than 90% of the adsorbing capacity of the high molecular weight polyether sulphone polymer with the side group containing the carboxyl to Cu<2+>, and the high molecular weight polyether sulphone polymer with the side group containing the carboxyl can be applied to preparation of a Cu<2+> adsorbing agent and has a broad application prospect in the aspects of water treatment field, membrane separation, fuel cells and the like.

The invention discloses a biobased polyarylester and a preparation method thereof. The polyarylester has the structural formula shown in the specification, wherein n is not less than 120 and not more than 200, and R is H or alkyl. The preparation method of the biobased polyarylester comprises the following steps of: carrying out esterification on 2,5-furandicarboxylate and diphenolic acid or esters of diphenolic acid under the catalysis action of esterifying enzyme to prepare an esterification product; and then carrying out condensation polymerization on the esterification product under the catalysis action of polyoxometalates. The biobased polyarylester has excellent toughness, heat resistance, fire resistance, ultraviolet screening property, bend recovery, dimensional stability and creep resistance and can be widely applied to the field of mechanics, electronics, vehicles, aviation, medical treatment, foods and the like.

The invention provides a diphenolic acid-based polyphosphate ester flame retardant containing a DOPO structure and a preparation method of the flame retardant. The prepared polyphosphate ester is high in phosphorus content, a good flame retarding effect can be achieved when the adding amount of the flame retardant is lower than 12 wt%, the using amount is far less than that of a traditional phosphorous flame retardant, and the efficient, green and environment-friendly flame retardant is obtained. The flame retardant has the advantages that compared with a condensed phase flame retardant group, the DOPO structure is more excellent in heat resistance, can play a flame retarding role in a gas phase and has a good flame retarding effect on epoxy; by considering that PLA is degraded in the processing process due to the end phosphate ester group, the phosphate ester group is enclosed by two benzene ring, and therefore the final mechanical property destruction degree of the material is greatly decreased; the structural general formula of the flame retardant is shown as the formula (I) in the description, wherein n is 3-20, and the R group is a phenyl group or phenoxy group.

A copolyester aryl and its production are disclosed. The copolyester aryl consists of bisphenol A structural unit, terephthalyl acyl structural unit, isophthalamic acyl structural unit, at least a diphenolic acid or diphenolic ester structural unit or diphenolic salt structural unit, or hung carboxy, carboxylic ester and carboxylic salt on side chain. The process is carried out by taking bisphenol monomer containing at least a diphenolic acid or its derivative and phthalchlorine monomer as raw material, taking quaternary ammonium salt as phase transfer catalyst, and interfacial polycondensation reacting under 10-50 Deg C. to obtain copolyester aryl. It achieves fast polymerization speed, short time, low temperature, more yield and molecular weight.

The invention provides a preparation method of a flame-retardant modified ramie fabric. The method comprises the following steps of soaking a ramie fabric in a coupling agent solution for 1-2 hours, and taking out and drying the soaked ramie fabric; soaking the dried ramie fabric in a poly-diphenolic acid phenyl phosphate ester solution for 5-10 minutes, and washing the soaked ramie fabric 1-3 times with deionized water; drying the washed ramie fabric, soaking the dried ramie fabric in a polyethyleneimine solution for 5-10 minutes, and then washing the soaked ramie fabric for 5-10 minutes; cleaning the soaked 1-3 times with the deionized water, and drying the cleaned ramie fabric; and repeating the process until the required layer number is achieved, and then performing drying, so as to obtain the objective namely the flame-retardant modified ramie fabric. The preparation method is simple in technological operation, flexible, and good in stability, and the flame retardancy of the ramie fabric can be effectively improved.

The invention discloses a preparation method of diphenolic acid based nonisocyanate polyurethane. The method includes: adopting diphenolic acid as the raw material to synthesize diphenolic acid isopropyl alcohol ester diglycidyl ether, then carrying out reaction with carbon dioxide to obtain diphenolic acid based bicyclic carbonate, and finally carrying out reaction with polyamine to obtain the diphenolic acid based nonisocyanate polyurethane. The invention provides the novel diphenolic acid based nonisocyanate polyurethane and the preparation method thereof, enriches the variety of nonisocyanate polyurethane, and further gives application of the product in preparation of coatings.

The invention discloses a bisphenol A fluorescence polarization immunity analysis and detection method based on adopting AMF as a fluorescein marker, and aims to provides a detection method with better specificity and sensitivity. According to the method, the fluorescein marker is synthesized through adopting diphenolic acid BVA as the hapten to couple with AMF fluorescein, bisphenol A is adopted as a standard substance, a bisphenol A monoclonal antibody is adopted as an antibody, and the bisphenol A fluorescence polarization immunity analysis and detection method is established; the invention belongs to the technical field of fluorescence polarization immunity detection technology.

The invention discloses a diphenolic acid type polyarylether dielectric material with a side chain containing methylsulfonyl and a preparation method thereof. The method comprises the following steps:1, carrying out a reflux reaction on diphenolic acid, potassium carbonate, potassium hydroxide and a dehydrating agent in a polar aprotic solvent in a protective atmosphere, adding a dihalogenated aromatic compound monomer, removing water and the dehydrating agent, reacting at 160-190 DEG C, pouring the reaction solution into acetone, adding an acid solution, soaking, and separating a product; 2,reacting for 1-36 hours at room temperature in a protective atmosphere; and 3, reacting the product with methylsulfonyl alcohol at room temperature for 24-72 hours in a protective atmosphere, then separating, and drying to obtain the diphenolic acid type polyarylether dielectric material with the methylsulfonyl-containing side chain. According to the invention, the dielectric constant is increased by utilizing the rotation of ester groups and methylsulfonyl groups on the side chain of the diphenolic acid type polyarylether polymer; meanwhile, introduction of a diphenolic acid structure and alarge number of ether bonds ensures that the dielectric material can maintain rigidity, and a polymer film with good heat resistance and excellent mechanical properties can be obtained.

The invention relates to a synthesis technology of diphenolic acid epoxy resin with moderate molecular weight, comprising the steps of using diphenolic acid and epoxy chloropropane as rawsource materials and condensing and catalyzing with alkaline catalyst to obtain diphenolic acid epoxy resin with moderate molecular weight through catalyzing by basic catalyst in the presence existence of phase transfer catalyst. The mole ratio of diphenolic acid to epoxy chloropropane is 1:2 to 10. The usage of the phase transfer catalyst is 1 to 4 percent of the mole number of diphenolic acid. The mole ratio of the usage of basic catalyst and diphenolic acid is 1:0.2 to 0.6. The reaction temperature is 60 to 80 degrees centigrade DEG C. , and The the reaction time is 2 to 6 hours. The synthesis technology of diphenolic acid epoxy resin with moderate molecular weight is characterized in by simple technique and high yield, and is suitable for industrial production.

The invention discloses a hand lay-up epoxy resin composite material for a wind turbine blade, common bisphenol A type epoxy resin is used as a main material, silanized cardanol modified epoxy resin and diphenolic acid epoxy resin are compounded, and the wettability of the hand lay-up epoxy resin composite material to fibers and the curing speed are improved; and meanwhile, by reasonably adding corresponding reactive diluents and auxiliaries, the hand lay-up epoxy resin composite material can meet the application requirements of wind power blade hand lay-up repair, and has the advantages of proper construction viscosity, good antisagging performance, low operation environment requirements, good fiber wettability and low shrinkage curing rate, and good toughness, mechanical properties, heat resistance, wear resistance and the like are achieved after curing.

A method for synthesis of N-methyl piperazine diphenolamide is presented. The method includes contacting diphenolic acid with N-methyl piperazine to form a reaction mixture; and heating the reaction mixture to form a reaction product including N-methyl piperazine diphenolamide. An associated composition is also presented.

The invention discloses konjac fly powder based epoxy resin, a preparation method thereof and a coating prepared from the konjac fly powder based epoxy resin. The preparation method of the konjac fly powder based epoxy resin comprises steps as follows: firstly, konjac fly powder and phenol are subjected to a reaction, a konjac fly powder liquefied product is obtained and is subjected to a reaction with epichlorohydrin and sodium hydroxide sequentially, and the konjac fly powder based epoxy resin is obtained. The konjac fly powder based epoxy resin is uniformly mixed with diphenolic acid type hyperbranched epoxy resin, modified chrysotile nanotubes, cardanol based glycidyl ether, pigments, filler, a defoaming agent, a leveling agent and a wetting dispersant, a mixture is cured with a cardanol phenol-aldehyde amine curing agent, and the solvent-free room temperature cured anticorrosive nano-coating is obtained. The solvent-free room temperature cured anticorrosive nano-coating containing the konjac fly powder based epoxy resin has a smooth and attractive surface and good wear resistance, pressure resistance, impact resistance and chemical resistance, the production and the construction are simple, convenient and environment-friendly, the cost is low, the requirement of actual production is met, and remarkable economic benefits are obtained.

The invention discloses a bifunctional ionic liquid, a preparation method thereof and application of the bifunctional ionic liquid in catalytic synthesis of bisphenol compounds, and belongs to the field of application of ionic liquid catalysts. The bifunctional ionic liquid is composed of heterocyclic quaternary ammonium cations containing sulfonic groups and sulfydryl and organic strong acid anions containing or not containing sulfydryl. The bifunctional ionic liquid has the functions of strong protonic acid and a -SH-containing compound, is used for catalytic synthesis of diphenolic acid, bisphenol A, bisphenol fluorene and the like, and has the characteristics of high reaction rate, high target product yield and good selectivity. The bifunctional ionic liquid is a green catalyst which is stable in performance and can be recycled, and compared with a protonic acid and sulfhydryl compound composite catalyst used in a traditional production process, the production process is simplified, equipment corrosion is reduced, and the production cost is reduced.

The invention relates to a concrete water reducer and a preparation method thereof. The preparation method comprises steps as follows: 4,4-bis(4-hydroxyphenyl) valeric acid, polypropylene glycol and p-toluene sulfonic acid are added to a reaction vessel and mixed uniformly, a mixture is then subjected to an esterification reaction, and modified diphenolic acid is obtained; b), modified diphenolic acid, sodium citrate and anhydrous dodecylbenzene sulfonic acid are mixed in water, and a mixed solution is obtained; c), a formaldehyde solution is dropwise added to the mixed solution, the mixed solution is heated to 45-50 DEG C and subjected to a reaction for 0.6-1.3 h, then the mixed solution is continuously heated to 70-95 DEG C and subjected to a reaction for 7-9 h, and an aqueous solution containing a water reducer is obtained. The water reducer provided by the invention contains sulfonate groups and terminal hydroxyl groups with quite good hydrophility, and compared with the prior art, the water reducer has the advantages that liquidity of concrete can be improved and the bleeding performance of the concrete can be greatly improved; meanwhile, compared with sulfonic acid series water reducers in the prior art, the concrete water reducer is high in water recuing rate and low in bleeding rate and is cheaper than a polycarboxylic type water reducer.

The invention provides polyester resin as well as a preparation method and application thereof. The polyester resin is prepared from raw materials including dicarboxylic acid, diphenolic acid, dihydric alcohol and a catalyst through a stepwise polymerization method, the number-average molecular weight of the polyester resin is 25000-40000, the glass transition temperature is 10-30 DEG C, and the hydroxyl value is 2-10 mgKOH/g; the polyester resin is synthesized through a distributed feeding method, diphenolic acid is reserved at the end of a polyester chain, the end of the resin contains a benzene ring and a plurality of hydroxyl groups, after the resin reacts with a curing agent, a local hard segment can be formed, the local hard segment is relatively soft with a polyester main long chain, the local hard segment and the polyester main long chain interact, and the elasticity is greatly improved. Compared with common resin, the diphenolic acid has a special structure, and can form a functional group with a structure similar to that of a PI film after curing, so that the adhesive force of the resin on substrates such as the PI film is increased, and meanwhile, the balance of solvent resistance and flexibility is considered.