232 results about "Diphenyl Oxides" patented technology

A flame retardant, intumescent pressure sensitive adhesive (PSA) composition for EMI shielding gaskets, tapes, wraps, and the like. The composition is formulated as an admixture of: (a) a PSA component; (b) a halogenated first flame retardant component; (c) a metal-based second flame retardant component; and (d) a filler component of expandable, intercalated graphite particles. In a representative embodiment the PSA component (a) is acrylic-based, the halogenated first flame retardant component (b) is a polybrominated diphenyl compound such as decabromodiphenyl oxide or decabromodiphenyl ether, the metal oxide-based second flame retardant component (c) is antimony oxide, antimony trioxide, or antimony pentoxide, and the filler component (d) is graphite flake.

An acidic aqueous hydrogen peroxid solution is provided, with improved disinfectant activity. Concentrated solutions preferably contain up to about 8% and as-used concentrations contain about 0.5% peroxide. The solution also contains from 0.1 to 5.0% of at least one acid compound, e.g. phosphoric and/or a phosphonate with from 1 to 5 phosphonic acid groups, and from 0.02 to 5% of at least one anionic surfactant. The surfactant is selected from C8 to C16-alkyl aryl sulphonic acids, sulphonated C12 to C22 carboxylic acids, C8 to C22-alkyl diphenyl oxide sulphonic acids, naphthalene sulphonic acids, C8 to C22 alkyl sulphonic acids, and alkali metal and ammonium salts thereof, and alkali metal C8 to C18 alkyl sulphates, and mixtures thereof. Most preferably the solution has an emulsifier, e.g. a salt of an alkylated diphenyl oxide. The solution may also contain corrosion inhibitors and/or lower alcohols.

An enhanced activity aqueous disinfecting solution having a pH of from about 0.5 to about 6 and consisting essentially of (i) hydrogen peroxide in a concentration of from about 0.05 to about 8 w/w % of the solution; (ii) at least one anionic surfactant selected from the group consisting of C8 to C16 alkyl aryl sulfonic acids and alkali metal, ammonium, ethanolamine, calcium and magnesium salts thereof, sulfonated C12 to C22 carboxylic acids and alkali metal, ammonium, calcium and magnesium salts thereof, C6 to C22 alkyl diphenyl oxide sulfonic acids and alkali metal, ammonium, ethanolamine, calcium and magnesium salts thereof, naphthalene sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, C8 to C22 alkyl sulfonic acids and alkali metal, ammonium, calcium and magnesium salts thereof, alkali metal, ammonium, calcium and magnesium C8 to C18 alkyl sulfates, alkyl or alkenyl esters or diesters of sulfosuccinic acid in which the alkyl or alkenyl groups independently contain from six to eighteen carbon atoms and alkali metal, ammonium, calcium and magnesium salts thereof, and mixtures thereof, in a concentration range of from about 0.02 to about 8 w/w % of the solution. Optionally, the solution may contain (iii) at least one additional ingredient chosen from a monocarboxylic acid, a polycarboxylic acid, and mixtures thereof, in a concentration of from about 0.05 to about 4 w/w % of the solution; and (iv) at least one further additional ingredient chosen from benzyl alcohol, an alcohol comprising one to six carbon atoms, and mixtures thereof, in a concentration of from about 0.1 to about 10 w/w % of the solution.

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.

A polyaryl thioether sulfone is disclosed, which has the characteristic viscosity for its solution of 0.15-0.54, the vitrification temp higher than 210 deg.C, the thermal deformation temp higher than 180 deg.C and thermal decomposing temp higher than 480 deg.C and thermal decomposing temp higher than 480 deg.C. Its preparing process features that the halogenated aryl compound is added to the reaction system of Na2S.xH2O and bichlorodiphenyl sulfone, and composite catalyste and assistant are used.

The invention discloses a preparation method of a polyimide nanometer lithium ion battery diaphragm and a product thereof. The preparation method comprises the following steps: preparing a polyamide acid solution, namely, performing condensation polymerization on 4,4'-diaminodiphenyl ether and 4,4'-oxydiphthalic anhydride in dimethylacetamide (DMAc) in a certain ratio; preparing a melt, namely, curing the obtained polymer solution at a certain temperature to obtain a condensate, and melting the condensate within the range of 20-30 DEG C below a melting point to obtain a semi-crystalline melt; preparing a diaphragm, namely, treating the obtained melt through a series of process including melt spinning, recrystallization, cold and thermal stretching and heat setting to obtain a nanometer diaphragm; carrying out diaphragm post-treatment, namely, removing a diluent and a part of remaining solvent in the diaphragm, and drying a polyamide acid diaphragm in vacuum; carrying out imidization treatment, namely, performing high-temperature imidization treatment on the prepared polyamide acid nanometer diaphragm to obtain the polyimide nanometer diaphragm. The prepared product is excellent in performance, and easy and convenient to process.

The invention relates to a polyimide film and a production process thereof. The polyimide film is mainly formed by the polymerization of material A 4,4'-bis(4-aminophenoxy)diphenylether and material B biphenyl tetracarboxylic acid dianhydride, wherein the ratio of the number of imide groups to the molecular weight of chain links is 2/678. The production process comprises the following steps: weighing the material A and the material b according to a weight ratio of 1.3:(0.99-1.0), and using N,N'-dimethyl acetamide as a solvent; throwing the material A into the solvent, stirring until the material A is dissolved, throwing the material B into the solvent in multiple times at a time interval of 20-50 minutes, and stirring, wherein the temperature is limited to 20-70 DEG C, and the weight of the solvent is 3-9 times of the total weight of the material A and the material B; and stopping throwing the material B when the resin viscosity reaches the reaction end point (4.0-7.0*10<5> centipoises) at 30 DEG C, continuing to stir for 4-6 hours to obtain a polyamic acid resin solution, casting into a film, and carrying out imidization; and regulating the viscosity when the material B remains 0.3-0.5 kilogram, wherein 0.03-0.1 kilogram of the material B is thrown each time, and the throwing amount is gradually reduced. The imide group content of the film is greatly reduced, and the alkali resistance and the moisture resistance of the film are greatly improved.

The invention relates to an efficient nitrogen and phosphorus fire retardant for epoxy resin, and a preparation method of the efficient nitrogen and phosphorus fire retardant. The method comprises the steps of allowing 4,4'-diaminodiphenyl ether (DDE) and aromatic aldehyde to conduct condensation reaction, and adding DOPO (9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) to a reacted mixture for reaction to prepare the nitrogen and phosphorus fire retardant. According to the method, an intermediate product is not required to be separated; the method has simplified processing steps, is efficient, safe and environment-friendly and facilitates industrial batch production. Molecules of the obtained fire retardant are higher in activity; the fire retardant can facilitate epoxy resin curing; after the fire retardant is added into the epoxy resin, a cured epoxy condensate has better flame resistance; when the phosphorus content of an epoxy curing system reaches 0.75-1.0wt%, the vertical burning grade reaches UL94V-0; the limit oxygen index is greater than 38; and the char yield reaches 21.2-22.7% at 800 DEG C.

The invention relates to a wear-resistant polyethylene pipe for an underground coal mine, belonging to one of polyethylene modified materials. The wear-resistant polyethylene pipe comprises the raw materials by weight percent: 2-5% of super wear-resistant carbon black, 10-20% of superconducting carbon black, 10-20% of decabromodiphenyl ether, 5-10% of antimony trioxide, 5-10% of POE, 0.5-1% of antioxidant, 2-4% of processing agent and the balance of high density polyethylene. The super wear-resistant carbon black has the required particle size of 11-15nm, the iodine absorption value of 145-152g/kg and the dibutyl phthalate (DBP) absorption value of 113-120cm<3>/100g. The wear-resistant polyethylene pipe has the advantages that excellent flame retardant and antistatic performance is excellent, and wear resistance is high, so that the flame retardant and the antistatic performance and the mechanical property of the pipe are guaranteed not to be reduced due to dragging and friction in the processes of installation and use, and the safety factor of underground coal mine operation can be improved.

A flame-retarded and antistatic Polywoven Bag is used to solve the problem that whose average surface resistance is sharply lower than that of the national standards and is prepared by: (1) Making flame-retarded masterbatch A by mixture and plastication of the antimony oxide and the polypropylene; (2) Making flame-retarded masterbatch B by mixture and plastication of the Decabromobiphenyl ether and the polypropylene; (3) Making antistatic masterbatch by mixture and plastication of the static agent and the polypropylene; (4) Making the mixture of the flame-retarded masterbatch A, B,antistatic masterbatch and the polypropylene through the high rate agitator; (5) Making the filamentus disk through drawing it to pellicle and filamentus using the plastic machine; and (6) Surface treating using the static agent. It can be used in coal mine and chemical lines.

The invention discloses a corona-resistance polyimide film, which comprises emulsion, amine solution and pyromellitic dianhydride, wherein the emulsion comprises 7 to 14 mass percent of nano metal oxide and nano metal nitride, 0.3 to 0.6 mass percent of dispersant, 0.3 to 0.5 mass percent of emulsifier and the balance of pyrrolidone; the amine solution comprises 20 to 25 mass percent of 4,4'-diamino-diphenyl ether and 75 to 80 mass percent of dimethylacetylamide, and the mass ratio of the emulsion to the amine solution is 1:(1.1-1.3); and the mass ratio of the pyromellitic dianhydride to the 4,4'-diamino-diphenyl ether is 1:(1.09). The invention also discloses the manufacturing method of the corona-resistance polyimide film. In the invention, the nano metal oxide and nitride are fully dispersed in polyamic acid resin by adding the emulsifier and dispersant and by a high-pressure emulsification technique, and the content of the nano metal oxide and nitride in the polyamic acid resin is high. Therefore, the produced film has high corona resistance and small astigmatic aberration, and at the same time, the film has high mechanical performance, electrical performance and the like.

The invention relates to a preparation method for disperse violet 26. In the method, 1,4-diamino-2,3-dichloroanthraquinone and phenol undergo a condensation reaction in the presence of an acid-binding agent, so that 1,4-diamino-2,3-diphenyl oxide anthraquinone is generated; particularly, the condensation reaction is undergone in a water-insoluble inertial organic solvent of which the boiling point is 120-175 DEG C; the feeding weight ratio of the inertial organic solvent to phenol to 1,4-diamino-2,3-diphenyl oxide anthraquinone to the acid-binding agent is (1.5-2.5):(3-5):(0.9-1.1):1; and in the process of the condensation reaction, and water in a system is brought out by using the inertial organic solvent. In the preparation method, water (mainly water generated through a condensation reaction) in the system is brought out quickly by using a solvent, forward proceeding of the reaction is facilitated, the reaction time is greatly shortened, and the generation of a byproduct is reduced, so that the product has high yield and high purity, and the production cost is lowered.

The invention discloses high-strength and low-chroma polyether-ether-ketone and a preparation method thereof. The preparation method of the polyether-ether-ketone comprises the following steps: carrying out nucleophilic polycondensation reaction on a first polymeric monomer and a second polymeric monomer in an inert aprotic solvent in the presence of alkali carbonate under the pressure of 0.15-1.0 MPa in an inert atmosphere to obtain the polyether-ether-ketone, wherein the first polymeric monomer is hydroquinone, biphenol, 4, 4'-dihydroxybenzophenone, 2, 2-bis (4-hydroxyphenyl) propane, 1, 3-bis (p-hydroxybenzoyl) benzene, 1, 4-bis (p-hydroxybenzoyl) benzene, alpha-naphthol, beta-naphthol and the like; the first polymeric monomer is 4, 4'-difluorobenzophenone, the second polymeric monomer is 4, 4'-difluorobenzophenone, 2, 4'-difluorobenzophenone, 4-fluoro-4'-chloro-benzophenone, 2-fluoro-4'-chloro-benzophenone, 2-chloro-4'-fluoro-benzophenone, diphenyl ether, 4, 4'-diphenoxy benzophenone and the like. The reaction time can be shortened, the reaction temperature can be reduced, and energy and cost can be reduced; the impact strength of the polymer is improved, and the color is brighter and whiter.

A preparation method of a diphenyl ether compound and application of the compound as a natural marine organism antifouling agent. The preparation method is as below: culturing marine fungus Aspergillus sp. (HM535361) in a fungus culture medium; conducting fermentation culture on the fungi in a fermentation medium; then soaking the fermentation products with methanol; conducting decompression concentration to obtain a methanol crude extract; suspending the extract in water; extracting the extract with ethyl acetate, conducting vacuum concentration on the extract and conducting chromatographic separation; and concentrating the eluent to obtain four colorless or light red oil, 4-methoxycarbonyl-diorcinol, 3, 3 '-O-dimethyl-violaceol-I, cordyolC and diorcinol. The invention provides an environment-friendly natural marine organism antifouling agent, which is characterized by using the diphenyl ether compound as an effective ingredient. The antifouling agent can be used for the prevention and treatment of marine organism biofouling caused by attachment of barnacle Balanus Amphitrite larvae, and has the advantages of high efficiency and low toxicity. The raw material can be obtained from mass production by fungal fermentation, and is not subjected to resource constraints; therefore, the invention has wide application prospect.

The invention relates to a polyimide adhesive film with excellent comprehensive performance as well as a preparation method and application thereof, belongs to the technical field of polyimide, and solves the problem that an existing polyimide adhesive film can hardly have excellent heat resistance, good adhesive property, low dielectric constant at high frequency and low dielectric loss. The polyimide adhesive film is mainly prepared from aromatic dianhydride, aromatic diamine containing a diphenyl ether structure and diamine containing a siloxane structure. The polyimide adhesive film has excellent heat resistance, high-frequency low dielectric property and good adhesive property. The glass-transition temperature is higher than 330 DEG C, the dielectric constant (Dk) at 10 GHz is smaller than 3, the dielectric loss (Df) value is 0.003-0.006, and the peel strength after the polyimide adhesive film is in hot-pressing adhesive connection with a copper foil is larger than 10 N/cm. The application requirements of flexible printed circuit board manufacturing and interlayer bonding and insulation in multi-layer circuit board lamination wiring processing can be met. The polyimide adhesive film provided by the invention can be widely applied to the fields of high-frequency flexible printed circuit boards, high-frequency film antennas and the like.

The invention discloses a polyethylene/polybutylece terephthalate (PBT) coated coconut shell powder particle blending foam material. The material is prepared from the following materials in part by weight: 60 to 80 parts of LLDPE (Linear low density polyethylene), 20 to 40 parts of HDPE (high-density polyethylene), 30 to 40 parts of PBT, 10 to 15 parts of tourmaline, 15 to 20 parts of water glass, 5 to 10 parts of coconut shell powder, 1 to 2 parts of anilino-methyl-triethoxysilane, 5 to 8 parts of decabromodiphenyl oxide, 4 to 6 parts of di-butyl nylonic acid ester, 5 to 8 parts of epoxy octyl stearate, 3 to 5 parts of foaming agent, 1 to 2 parts of diperoxycarbamate, 1 to 2 parts of zinc oxide, 1 to 2 parts of calcium stearate, 0.5 to 1 part of dibasic lead phosphite, 2 to 3 parts of glycol tristearate, 3 to 5 parts of modified tree ash, and 1 to 2 parts of antioxidant 2461. The polyethylene/PBT coated coconut shell powder particle blending foam material is light in weight, flexible, high in strength, good in resilience, ideal in foaming effect, uniform in cell, compact, high in flame resistance, ageing resistant and durable.

The invention relates to a PTFE (polytetrafluoroethylene) high-temperature resistance conveying belt which comprises a glass fiber cloth layer. A structural layer and a surface layer evenly coat on the front side and the rear side of the glass fiber cloth layer from inside to outside, the structural layer is formed by mixing and dip-coating of PTFE emulsion, talcum powder, kaoline, calcium carbonate, PP (propene polymer) efficient environmental protection flame retardant or double tetrabromo bisphenol S (1, 3-dibromo propyl) ether or decabromodiphenyl ether or hexabromocyclododecane/aluminium hydroxide or magnesium hydrate or a fire retardant and methacrylic acid composed by above mixture or pollyacrylamide or polyoxyethylene or carbomer resin or polyacrylate copolymer emulsion or a thickening agent and sodium hyxametaphosphate composed by above mixture or polyethylene glycol or sodium polyacrylate or styrene-acrylic acid or a dispersing agent composed by above mixture, the surface layer is formed by mixing and dip-coating of the PTFE emulsion, silicon dioxide, chopped glass fibers, aluminium hydroxide or magnesium hydrate or ammonium polyphosphate or microencapsulated red phosphorus or the fire retardant composed by above mixture.