216 results about "Urushiol" patented technology

The invention discloses a preparation method for a benzoxazine intermediate and a synthetic resin of the intermediate. The method comprises the following steps: adding 2 to 2.4 parts by mol of an aldehyde solution with a mass percent of 35 to 40% and 1 part to 1.2 parts by mol of primary amine compounds into 80 to 120 parts by mol of an organic solvent, controlling reaction temperature to be no more than 30 DEG C, adjusting the pH value of an obtained mixture to be 7 to 14, maintaining the mixture at a constant temperature for 30 minutes, adding 1 part by mol of urushiol, heating an obtained mixture to a temperature of 90 DEG C, allowing the mixture to react for 5 to 10 hours, carrying out vacuum distillation on a reaction solution, dissolving a product with a fat-soluble solvent, rinsing the product 3 to 5 times, carrying out drying after removal of the solvents so as to obtain the desired benzoxazine intermediate, and curing the benzoxazine intermediate in an electrothermostat at different stages. According to the invention, the considerable advantages of a simple synthetic method, easily available raw materials, low cost, low viscosity, a liquid state at normal temperature and suitability for industrial production are achieved; polymerized polybenzoxazine has excellent heat resistance and mechanical properties.

The present application is directed to various compositions to treat the itching and conditions that result from contracting poison ivy, poison oak, and poison sumac, as well as other plant and substances that contain substances that lead to a skin reaction but that upon removal alleviate the symptoms of the condition. In particular, the compositions described herein are useful for removing urushiol after it has contacted the skin. The compositions include granules or other scrubbing means to reach the urushiol in the skin, a mixture of surfactants to form a complex with the urushiol, counter-irritants to provide a soothing sensation to the irritated skin, and other functional ingredients to provide additional benefits to the individual who has contacted urushiol.

The invention discloses water paint. The water paint comprises following components in parts by weight: 70-150 parts of white cement, 5-15 parts of titanium dioxide, 30-70 parts of an urushiol-based emulsifier and 70-110 parts of urushiol formaldehyde condensation polymer emulsion. The water paint, disclosed by the invention, is added with raw lacquer, so that the advantages of the hard, bright, wear-resisting, heat-resisting and corrosion-resisting film formed by the raw lacquer are brought into full play; as the urushiol-based emulsifier is added in a matching manner to emulsify the raw lacquer, so that good compatibility of the raw lacquer can be guaranteed and formation of a compact and rigid interfacial film is facilitated; and as the urushiol-based emulsifier can participate in a film-forming reaction of the raw lacquer, adverse influences from a traditional emulsifier to film coating performances are avoided, and extremely strong hardness is obtained.

The present invention discloses a method for preparing urushiol acetal epoxy resin / TiO2 nano composite paint. Said method is characterized by that after the raw material nano TiO2 particles are modified by using anionic surface active agent, the modified raw material nano TiO2 particles can be mixed with urushiol epoxy resin, and undergone the process of ultrasonic treatment so as to obtain the uniformly-dispersed nano composite paint with excellent mechanical property and acid-resisting, alkali-resisting and high-temperature-resisting properties. Said invention also provides its application range.

The invention discloses phenolic resin and a synthetic method thereof. The prepared phenolic resin is composed of the following raw materials in parts by weight: 15%-20% of urushiol, 4%-6% of a aldehyde compound, 1.5%-2.5% of an alkaline catalyst, 5%-10% of binary anhydride, 8%-15% of dry vegetable oil, 0.1%-0.7% of an initiating agent, 50%-60% of a solvent, wherein the sum of the percentages of the raw materials is 100%. According to the invention, the synthetic process is simple, the condition is easy to control, the product is uniform, and a coating film is rich in elasticity, high in brightness, good in adhesive force and light in color; and the phenolic resin not only avoids toxicity of raw lacquer, but also overcomes the weaknesses such as poor weather resistance, poor acid and alkaline resistances, and poor durability, enlarges application range of the raw lacquer, and enables the raw lacquer to be widely applied to the fields such as buildings, decoration, furniture, petroleum and chemical engineering.

The invention relates to a urushiol-silicon nano anticorrosive coating and its preparing method, mainly solving the problem of worse hydrophobic and oleophobic properties of existing metal anticorrosive coatings. Its characteristic: it includes the following components in weight percent: urushiol-silicon resin 30%-40%, epoxy resin 1%-3%, and nano rutile 1%-3%. It has the resistance to strong acid, strong base and salt solution, high rigidity, shock resistance and temperature resistance, and low hydrophobic and oleophobic properties of the surface, i.e. it has the properties of prevent wax precipitation and fouling.

The present invention discloses a urushiol organic silicon resin and a preparing method thereof. The urushiol organic silicon resin is prepared from the following raw materials of the percentages by weight: 20 to 30% of urushiol, 4 to 6% of aldehyde compound, 3 to 30% of organic silicon prepolymer, 0.5 to 1.5% of catalyst and 40 to 55% of diluent, based on the total weight of the raw materials. As an alternative, 5 to 20% of epoxy resin is added. The urushiol organic silicon resin has excellent properties on resisting heat, water, oxidation, cold, radiation, etc. The urushiol organic silicon resin can be broadly used in the fields of military affairs, aerospace, electronics, machinery, construction, chemical engineering, etc.

The invention relates to a medicinal preparation, which is prepared from a phenolic compound (shown in a structural formula I) serving as a main active ingredient and extracted from a traditional Chinese medicament dried lacquer and can be prepared into oral formulations such as tablets, capsules and the like or injections. The oral formulations or injections, which uses the phenolic compound in the dried lacquer as the active ingredient, can be added with other components or auxiliary materials to form a compound preparation; the compound preparation has obvious effects of inhibiting tumor cytotoxin activity and tumor angiogenesis, nuclear transcription factor-kappaB activity and the like; and the compound preparation can be used for curing cancers such as leukemia, liver cancer, lung cancer, esophagus cancer, myeloma, breast cancer, colon cancer, prostatic cancer and the like and has an obvious therapeutic effect.

The invention includes compositions suitable for removal of urushiol from skin having been exposed thereto, which compositions contain an ethoxylate and sodium lauroyl sarcosinate, methods for treating allergic dermatitis of skin having been exposed to urushiol, and kits suitable for treatment of allergic dermatitis,

The invention belongs to the technical field of UV photocatalytic chemistry and discloses unsaturated vegetable oil alkylates based on UV photocatalytic reaction and a preparation method thereof. The alkylates have one of structures shown in following formulas (1) and (2), wherein R1 is C-C4 linear or branched alkane groups, R2 is at least one of -H, -Cl, -CH3, -OH, -OCH3, -C(CH3)3 and the like, n is equal 0 or 1, m is greater than 1, with 6<l+m+s+t<16, and R3 is at least one of -OH, -CH3, -COOH and the like, with a=1 or 2, 0<b<6, c=0 or 1 and d=0 or 1. Analogs with urushiol structure are synthesized by using UV photo-initiated vegetable oil acylation, reaction conditions are mild, reaction time is short, and various vegetable oil acrylates can be acquired without the conditions such as high temperature and high pressure.

The invention discloses urushiol phosphorous-series flame retardant resin. The resin consists of the following raw materials in percentage by mass: 20 to 40 percent of urushiol, 0 to 20 percent of amine compound, 4 to 10 percent of aldehyde compound, 0.5 to 6 percent of phosphorous-series compound, 0 to 5 percent of epoxy resin, 0.5 to 3 percent of catalyst and 40 to 55 percent of solvent. A method for preparing the urushiol phosphorous-series flame retardant resin comprises the following steps of: obtaining raw lacquer from a lacquer tree; separating and extracting the urushiol from the raw lacquer, heating the urushiol and reacting the heated urushiol with the amine compound, the aldehyde compound, the solvent and the catalyst for synthesizing; and adding the epoxy resin, the phosphorous-series compound and the solvent into the complex, heating and reacting for synthesizing, stopping heating and cooling to room temperature after reaction is finished. The resin has high flame retardant property, water resistance and chemical resistance and is suitable for fields such as public fire safety, chemical industry, light industry, building materials, electronic apparatuses, mining and the like.

The invention discloses a preparation method of a sprayable colored raw lacquer. The sprayable colored raw lacquer is composed of the following raw materials in percentage by mass: 15-40% of urushiol, 4-8.5% of epoxy compound, 0.01-10% of metal powder, 0.01-1% of coupling agent, 0.5-2.5% of catalyst and 40-63% of diluter, totaling 100%. The colored raw lacquer has the advantages of low viscosity, diverse paint film colors, high mechanical properties, favorable acid resistance, favorable alkali resistance, favorable water resistance, favorable oil resistance, favorable wear resistance, simple synthesis technique and controllable conditions. The method diversifies the colors of the raw lacquer on the premise of ensuring the excellent properties of the raw lacquer. The method enhances the quality of the raw lacquer. The raw lacquer can be widely used in the fields of furniture, artware, decoration, printing, construction, electronics, machinery, chemical industry and the like.

The invention discloses a method for refining kernel oil of lacquer tree seeds. The method comprises the steps of: lacquer tree seed freezing, peel-nucleus separation, screening, pressing, leaching, desolvation, extraction and merging, desolvation is conducted through a membrane evaporator by using a high-vacuum membrane evaporation mode, and extraction is conducted through supercritical carbon dioxide extraction. The invention also provides the lacquer tree seed kernel oil prepared by using the method, and the method for refining the kernel oil of lacquer tree seeds has a simple and convenient process; the lacquer tree seed kernel oil extracted by using the method has high purity, and denaturation of free urushiol is avoided, so that the color, quality and use performance of the oil are good, the production cost is greatly reduced, and the refining loss rate of the lacquer tree seed kernel oil is reduced; and therefore, the method is suitable for large-scale industrial production.

A treatment for urushiol induced pain and itching is provided for in a topical wash. A method is provided for applying, foaming, and removing a composition of substances to the effected area. The composition comprises a pramoxine compound in combination with a water-soluble nonylphenol ethoxylate and an inert foaming agent, preferably ammonium lauryl sulfate. It is believed that this combination stabilizes the neuronal membrane of the nerve endings with which it comes into contact, binds to the available urushiol rendering it inactive, and removes the inactive urushiol. The inert foaming agent is included to assist in the removal of the urushiol. The composition also can include one or more of a foam stabilizer, a preservative, an emulsifier, a moisturizer, and a pH adjuster. In one embodiment, the composition can comprise a quantity of cleansing beads to facilitate cleansing of the dermatitis-affected area.

The invention discloses a method for preparing modified graphene applicable to epoxy resin. According to the method, green renewable Chinese lacquer tree extract urushiol or cashew nut shell extract cardanol is used as a main raw material, and unsaturated double bonds on the long side chain of the main raw material and fatty acid are enabled to be subjected to an epoxidation reaction, so that urushiol glycidyl ether or cardanol glycidyl ether with a phenolic hydroxyl group can be obtained; the urushiol glycidyl ether or the cardanol glycidyl ether is used as a reducing agent and a modifier forgraphene oxide, so that the modified graphene which contains a large amount of long carbon chains and epoxy groups on the surface and has good dispersity in epoxy resin can be obtained. The method provided by the invention adopts the natural renewable compounds, i.e., the urushiol and the cardanol as the main raw materials, and has the characteristics of being environment-friendly, simple in process, low in production cost and the like, thus being easy to popularize and use. The modified graphene prepared by the method has good compatibility in the epoxy resin, improves the interfacial adhesion of a graphene / epoxy resin composite material, and can significantly improve the mechanical properties and corrosion resistance of the epoxy resin.

Disclosed are formulae and methods for the simultaneous relief of a variety of unpleasant symptoms of poison ivy on the skin. The compositions of the present invention remove toxic urushiol, relieve itching of the skin from urushiol, and heal the dermatitis caused by urushiol. A preferred embodiment of the invention is a topical dosage form which can be applied as often as desired, may be scrubbed onto the skin, and leaves a soothing effect on the skin after rinsing with warm water.

The invention relates to an antifouling paint based on a urushiol benzoxazine copper polymer. The antifouling paint comprises the following raw materials in parts by weight: 95-105 parts of urushiol benzoxazine copper polymer, 0-30 parts of cuprous oxide, 3-10 parts of auxiliary antifoulant, 3-10 parts of antibacterial agent, 1-3 parts of auxiliary and 20-60 parts of solvent. The invention furtherrelates to a preparation method of the antifouling paint based on the urushiol benzoxazine copper polymer. The antifouling paint based on the urushiol benzoxazine copper polymer, provided by the invention, has the advantage that the usage amount of cuprous oxide is greatly reduced.

The present invention discloses a urushiol-modified phenolic resin. The urushiol-modified phenolic resin is prepared from a material containing phenol, formaldehyde and urushiol under an alkaline condition. The urushiol-modified phenolic resin effectively reduces the curing temperature of phenolic resin and improves the toughness of the phenolic resin adhesive. The urushiol-modified phenolic resinhas a good bonding performance applied to metal bonding; and a preparation method of the urushiol-modified phenolic resin has the advantages of simplicity in operation, and wide sources of the raw materials.

The present invention discloses the preparation process of nano urushiol formaldehyde condensation polymer / montmorillonite composite paint. The nano composite paint is prepared with urushiol, hexamethine tetramine and organic montmorillonite as material, and through intercalation, condensation and butylation. The nano composite paint has physical and mechanical performance similar to that of urushiol formaldehyde condensation lacquer but greatly raised uvioresistant capacity.

The invention relates to a preparation method for an amino silicone modified urushiol light-cured film. The method is characterized by comprising the following steps of pre-mixing urushiol and dimethylbenzene to obtain mixed liquor, performing dehydration, adding amino silicone, and performing constant temperature reaction to obtain amino silicone modified urushiol prepolymer mixed liquor; coating clean sheet glass or a tinplate sheet polished by sandpaper with the prepared amino silicone modified urushiol prepolymer mixed liquor, and performing ultraviolet irradiation to obtain the amino silicone modified urushiol light-cured film. The preparation method has the advantages that 1, urushiol is a natural renewable resource, and is extensive and low in cost; 2, the amino silicone modified urushiol light-cured film can be rapidly prepared; 3, an amino silicone modified urushiol light-cured film coating prepared by the method has high adhesion, flexibility, impact resistance, chemical medium resistance and heat resistance. The amino silicone modified urushiol light-cured film is applied to the field of high-performance coatings.

The invention discloses urushiol-cardanol bio-based resin and a synthesis method thereof. The prepared urushiol-cardanol bio-based resin comprises the following raw materials in mass percentage: 20-40% of urushiol, 5-20% of cardanol, 4-8% of aldehyde compound, 0.5-3% of catalyst, 40-60% of diluting agent, 0-20% of epoxy resin and 0.1-5% of curing agent, with the total percentage of 100%. The urushiol-cardanol bio-based resin solves the problems that a raw lacquer product is insufficient in supply and high in price, can be sprayed, coated and brushed, has a low requirement on a construction technology, can realize mechanized operation, does not require specific temperature and humidity conditions and can be dried under a natural condition, and a lacquer film remains the excellent performance of the urushiol resin; and the urushiol-cardanol bio-based resin has excellent comprehensive anti-corrosion performance and is an excellent intermediate of the urushiol resin.

Disclosed is a composition which is provided as a cream. One use for the product is for removing urushiol oil from the dermal layer of the skin using a combination of other oils. The composition may include all or some of Apricot oil (kernel oil), Avocado oil, Dead Sea Salts, Eucalyptus (essential oil), Grapefruit oil (pink, essential oil), Grapeseed oil (essential oil), Jojoba oil (organic), Lemon oil (essential oil), Orange oil juicy flavor oil), Peppermint (essential oil), Rosemary oil (essential oil), Spearmint oil (essential oil), Vitamin E oil (T-50 all natural); and Walnut oil.

The invention provides a method for detecting alkylphenol compounds in a ginkgo leaf raw material and a preparation. The method comprises the following steps: using HPLC (High Performance Liquid Chromatography) separation and ESI-Q-TOF-MS (Electric Spray Ion Source-High Resolution Quadrupole Time of Flight- Mass Spectrometry) to simultaneously determine content of alkylphenol compounds in the ginkgo leaves. The method for detecting the alkylphenol compounds in the ginkgo leaf raw material and the preparation disclosed by the invention can simultaneously detect 31 sensitized alkylphenol compounds in the ginkgo leaves, the ginkgo leaf extract and the ginkgo preparation, which comprise 22 ginkgo acid compounds, 3 resorcylic acid compounds and 6 urushiol compounds; compared with the existing alkylphenol compound analytic method at present, the method is higher in analytical ability, and capable of effectively increasing the quality control level of the processed semi-finished products and finished products of the ginkgo leaf raw material and the preparation, so as to achieve positive meaning for ensuring the clinical medication safety.

The invention discloses a food-grade urushiol-based tung oil composite coating and a preparation method thereof. The food-grade urushiol-based tung oil composite coating is prepared by mixing urushioland tung oil according to a mass ratio of 7: 3, adding an antibacterial agent, a mildew inhibitor and a drier, and mechanically stirring and mixing at room temperature. According to the invention, the comprehensive use performance of the urushiol is improved by using the tung oil, so that the obtained food-grade urushiol-based tung oil composite coating can be thermally cured to form a film within 30 minutes at the temperature of 120 DEG C, the impact resistance of the coating is improved to 60 cm, the flexibility is improved to 3 mm, and the alkali resistance (25% sodium hydroxide solution)is improved to 40 days. In addition, the high-temperature heat resistance of the composite coating is improved, the antibacterial rate of the coating is up to 99%, the mildew resistance is up to level0, and the total mobility of trichloromethane, the consumption of potassium permanganate and the content of heavy metals all reach the national food grade material standard, so that the composite coating can be used in the fields of paint ware and handicraft products such as tire stripper, wooden food boxes and the like.

A method of treating a surface of a substrate using modified urushiol derived from Toxicodendron vernicifluum is provided. More particularly, the reactivity of a hydroxyl group of urushiol extracted from fresh Toxicodendron vernicifluum is removed before the lacquer is used as a UV coating agent for a substrate such as a steel sheet. Therefore, the substrate may have high antibacterial activity, and excellent appearance and functionalities such as far-infrared radiation, blocking of electromagnetic waves, enhanced corrosion resistance, high crosslinking speed when a low content of a photoinitiator is used, excellent surface gloss and high scratch resistance.

The invention relates to controllably and reversibly crosslinked urushiol resin and a preparation method thereof. The preparation method of the controllably and reversibly crosslinked urushiol resin comprises the following steps: dissolving urushiol resin or a urushiol derivative and reversible crosslinking agent diallyl disulfide in a diluent in the mass ratio being 100:1-100:30, and uniformly stirring the substances to obtain the controllably and reversibly crosslinked urushiol resin. According to the controllably and reversibly crosslinked urushiol resin, content of carbon-carbon double bonds (C=C) in the resin can be changed by controlling dose of diallyl disulfide under ultraviolet irradiation, that is, controllable free radical crosslinking polymerization of the urushiol resin is realized by controlling content of free radicals. After crosslinking polymerization of the resin, reversible crosslinking functionalization of the urushiol resin can be realized by means of the characteristic that disulfide bonds in diallyl disulfide can be oxidized under the condition of a strong base into mercapto groups to be broken. The controllably and reversibly crosslinked urushiol resin is applicable to the fields of paint technology automation technique, additive manufacturing technique, raw lacquer coating, raw lacquer pigment and the like.

The invention discloses a reduction and modification method of graphite oxide and an application of graphite oxide in modified epoxy resin. The method comprises the steps of allowing a Chinese lacquertree extract urushiol and an epoxy compound to give a ring-opening reaction in an organic solvent to form a urushiol glycidyl ether reaction intermediate with a phenolic hydroxyl group, reducing thegraphite oxide by taking the urushiol glycidyl ether reaction intermediate as a reducer to form graphene that has many long carbon chains, carbon-carbon double bonds and epoxy groups on the surface and shows good dispersity in the organic solvent, and mixing the prepared graphene and epoxy resin according to a certain proportion to form the graphene modified epoxy resin. The graphene prepared by the method can be quickly and uniformly dispersed in various epoxy resins; compatibility and an interface binding force between the graphene and the epoxy resin are effectively improved; long-term andstable storage of the modified graphene / epoxy resin can be achieved; and the convenience is provided for subsequent preparation of a graphene-based epoxy resin composite.