Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

32 results about "Gum Camphor" patented technology

Collateral-dredging and pain-relieving gel plaster and preparation method thereof

The invention discloses a collateral-dredging and pain-relieving gel plaster and a preparation method thereof. The collateral dredging and pain relieving ointment is prepared from the following raw materials in percentage by mass: camphor, borneol, menthol, absolute ethyl alcohol, collateral dredging and pain relieving volatile oil, a surfactant, collateral dredging and pain relieving extract, tartaric acid, purified water, partially neutralized sodium polyacrylate, a cross-linking agent, an adhesive, glycerol, EDTA-2Na (Ethylene Diamine Tetraacetic Acid) and a filling agent. The plaster disclosed by the invention is high in application comfort, breathable, free from aching feeling after being uncovered, free from residue on skin and not sticky when being in contact with sweat; the use of an organic solvent is basically avoided in the production process; the matrix contains components such as water and glycerol, has the effects of moistening the skin and promoting skin hydration, and is free of irritation and sensitization to the skin; repeated uncovering and pasting can be achieved, and the viscosity influence is small.
Owner:BEIJING LINGRUI WEIYE TECH CO LTD +1

Application of D-camphor and cymenin in preparation of sensitive skin anti-inflammatory soothing preparation

The invention relates to an application of D-camphor and cymenin in preparation of an anti-inflammatory soothing preparation for sensitive skin. The invention discloses an application of D-camphor and cymenin as only two effective components in preparation of an anti-inflammatory soothing preparation for sensitive skin. The invention further discloses an anti-inflammatory soothing preparation for sensitive skin, only two effective components of the anti-inflammatory soothing preparation for sensitive skin are D-camphor and cystin, and the anti-inflammatory soothing preparation for sensitive skin can reduce the reaction of IL-6, IL-8 and NO related microinflammation in a keratinocyte inflammation model. The invention has the following beneficial effects: 1, in a high proportion window (5-10: 1) of D-camphor and polycymenin, the inhibition of the compound system of D-camphor and polycymenin on IL-6, IL-8 and NO is superior to that of any monomer; 2, stable dispersion and good use experience can be realized through the micro-emulsion type emulsifying essence or the face cream carrier, and meanwhile, the face cream still has feasibility under the conditions of no essence and no conventional preservative.
Owner:INSTITUTE OF CHINESE MATERIA MEDICA CHINA ACADEMY OF CHINESE MEDICAL SCIENCES

4-disubstituted aminobenzyl subunit camphorsulfonic acid as well as synthesis method and application thereof

The invention relates to a water-soluble ultraviolet absorbent 4-disubstituted aminobenzyl subunit camphorsulfonic acid and a synthesis method and application thereof, and the synthesis method comprises the following steps: in a toluene-methanol mixed solvent, carrying out heating reflux reaction on camphorsulfonic acid and 2 equivalent weight of sodium methoxide, and after enolation conversion is completed, carrying out reduced pressure distillation to obtain the 4-disubstituted aminobenzyl subunit camphorsulfonic acid. Slowly dropwise adding a corresponding 4-disubstituted aminobenzaldehyde solution with the molar weight equal to that of camphorsulfonic acid, continuously heating and stirring to react for 6-12 hours, adding water to terminate the reaction, acidifying the reaction solution by using hydrochloric acid or sulfonic acid type cation exchange resin, separating to remove methylbenzene, adjusting the pH value of a water phase to about 6.5, performing rotary evaporation dehydration under reduced pressure, and extracting a crude product by using a conventional method; a target product can be obtained through column chromatography purification, and the target product not only has water solubility, but also has the characteristic of absorbing UVA and UVB ultraviolet light at the same time; the composition can be applied to sun-screening agent products, cosmetics or home care products, and also can be applied to various industrial products such as paint, varnish, plastics, textiles and rubber to improve the light resistance of the industrial products.
Owner:HUBEI UNIV

Pain-relieving plaster preparation process and filtering treatment system

The present invention discloses a pain relieving plaster preparation process and a filtration treatment system, and relates to the field of medical equipment, the pain relieving plaster comprises the following production raw materials by mass ratio (W / W%): 3.0-5.0% of menthol; 0.5 to 1.0 part of carbomer; 0.3 to 0.7 part of camphor; 0.5 to 0.9 part of triethanolamine; 23.0 to 29.0 parts of isopropyl alcohol; 0.2 to 0.3 part of an arnica flower extract; 4.0 to 5.0 parts of glycerol; 0.4 to 0.6 part of isopropyl myristate; 0.1 to 0.2 part of a calendula flower extract; 0.01 to 0.03 part of VE (Vitamin E) acetate; 0.1 to 0.2 part of melissa officinalis leaf extract; 0.005 to 0.015 part of aloe barbadensis leaf juice; 0.1 to 0.3 part of burdock extract; 0.4-0.6% of a tea leaf extract; 0.1-0.3 part of a paraguay tea leaf extract; 0.04 to 0.06 part of olibanum serratum extract; 0.05 to 0.15 part of a methyl methacrylate cross-linked polymer; 0.001 to 0.003 part of a pigment; and the rest is water. According to the invention, menthol is taken as a main active component for relieving pain and is matched with components such as skin-care grease, an ointment product with a pain-relieving effect is produced through a physical mixing process, and the quick-acting formula can deeply permeate and quickly dry and is wide in application range.
Owner:YOUHU YOUJIA HEALTH TECHNOLOGY (JIANGSU) CO LTD

New crystal form of AXL kinase inhibitor

The invention relates to the technical field of medicine crystal forms, and particularly discloses a novel crystal form of an AXL kinase inhibitor, a dextro-camphorsulfonate crystal form I and a dextro-camphorsulfonate crystal form II are prepared, and the dextro-camphorsulfonate crystal form I and the dextro-camphorsulfonate crystal form II are both anhydrides and have good physical stability and chemical stability. After the camphor sulfonate crystal form I and the camphor sulfonate crystal form II are placed under the conditions of high temperature (60 DEG C), high humidity (92.5% RH) and illumination for 10 days, the appearance of the camphor sulfonate crystal form II has no obvious change and has no obvious difference in 0 day, and compared with the camphor sulfonate crystal form I and the camphor sulfonate crystal form II, the camphor sulfonate crystal form II is more stable in thermodynamic stability tests in ethanol and methanol supersaturated solutions.
Owner:ZHONGSHAN INNOVATION BIOPHARMACEUTICAL CO LTD

Medicament tablet

The invention discloses a medicament tablet which is placed in a medicine storage chamber for a mask, volatile components of the medicament tablet are diffused outwards through breathable meshes in a bottom wall, and the medicament tablet is prepared from the following raw materials in percentage by mass: 5-40wt% of menthol, 5-40wt% of menthol, 5-40wt% of menthol, 5-40wt% of menthol, 5-40wt% of menthol, 5-40wt% of menthol and the balance of water. 5 to 25 wt% of borneol; 8 to 15 weight percent of camphor; 10 to 50 wt% of eucalyptus oil; 2 to 10 weight percent of wintergreen oil; 5-10 wt% of turpentine oil; 1-5 wt% of clove oil; 1 to 3.5 wt% of orange peel; and 0.5 to 2.1 wt% of bergamot. According to the present invention, when the air purification material is applied to the mask, the harmful substances such as pathogenic bacteria, dust, PM2.5 and the like in the air can be adsorbed and filtered while the pathogenic bacteria can be effectively inactivated.
Owner:钱澄

Method for determining components in gushen dingchuan pills and application thereof

The application provides a method for determining components in Gushen Dingchuan Pills and application thereof. In the preparation process of the sample to be determined, the mixed solvent composed of water and organic solvent is used to ultrasonically extract the Gushen Dingchuan Pill powder, and then cold soaking and layering are performed, so that the influence of other components on the separation and stability of volatile components in the Gushen Dingchuan Pill can be significantly reduced, the separation stability of the volatile components in the Gushen Dingchuan Pill is significantly improved, and the separation time is shortened. The method provided by the application can quantitatively analyze seven chemical components (borneol acetate, camphor, borneol, cinnamic aldehyde, paeonol, alpha-pinene and linalool) in the Gushen Dingchuan Pill, and realizes qualitative and quantitative determination at the same time.
Owner:GUANGZHOU BAIYUNSHAN JINGXIUTANG PHARM CO LTD

A composite tailor-welding method for improving the yield of an aluminum-silicon coated plate integrated door ring

ActiveCN121535328BLap jointKaolin clay
The application discloses a composite tailor-welding method for improving the yield of an aluminum-silicon coated plate integrated door ring, and belongs to the technical field of tailor-welding methods.The method comprises the following steps: preparing a plurality of door ring blanking pieces, all of which are aluminum-silicon coated plate materials; and connecting the blanking pieces into an integrated door ring by tailor-welding, wherein the connection mode between one blanking piece and the adjacent two sides is lap joint, the lap joint strength at the two places is realized by resistance spot welding, the other connections are butt joints, and the strength is realized by laser tailor-welding, the laser tailor-welding adopts a micro-sphere reinforced welding wire, and the preparation method of one of raw materials of the micro-sphere reinforced welding wire, porous micro-sphere composite metal powder, is modifying camphor by using cation starch modified kaolin and sodium lignosulfonate, and mixing the camphor with Al-Si-Sr alloy micro-sphere powder to form pores.Through the above method, the yield of the aluminum-silicon coated plate integrated door ring is improved.
Owner:燕龙世润汽车零部件(苏州)有限公司

Compositions and methods for treating dental hypersensitivity

Disclosed herein are oral care compositions for reducing dental hypersensitivity comprising at least one epoxidized acrylated vegetable oil (e.g., at least one epoxidized acrylated soybean oil) and a photoinitiator system comprising at least one photoinitiator (e.g., camphorquinone or riboflavin). Also disclosed herein are methods of using the oral care composition to reduce or prevent dental hypersensitivity.
Owner:COLGATE PALMOLIVE CO

New use of yanchun sand essential oil and hair cosmetic with oil control effect

This invention belongs to the field of daily chemical products and discloses the application of *Amomum villosum* essential oil in the preparation of hair cosmetics with oil-controlling and / or anti-hair loss effects. Verification has shown that *Amomum villosum* essential oil has excellent effects on scalp oil control and hair loss prevention. Furthermore, *Amomum villosum* essential oil is mainly composed of volatile oils, and its components, including bornyl acetate and camphor, have good transdermal absorption properties, which can indirectly regulate the "spleen-regulating dampness-resolving and hair loss-preventing" function. This invention also provides a hair product containing *Amomum villosum* essential oil.
Owner:GUANGZHOU UNIVERSITY OF CHINESE MEDICINE

Method for detecting PFAS concentration in water based on Malangei driving camphor motor

The invention relates to a method for detecting the concentration of PFAS in water based on a Malangei driving camphor motor, which comprises the following steps of: acquiring the motion trails of the Malangei driving camphor motor in aqueous solutions with different PFAS concentrations, and converting the PFAS interface adsorption action into motor macroscopic motion signals; obtaining a PFAS concentration-motor motion parameter standard curve and a standard curve equation through the motion signal; and performing inversion detection on the PFAS concentration in water by using the motion parameters obtained by driving a camphor motor in a water sample to be detected by Malangei and utilizing a PFAS concentration-motor motion parameter standard curve and a standard curve equation. The method is low in detection cost and simple and convenient to operate; the quantification precision is high, and the specificity is strong; the application range is wide.
Owner:XIAN AERONAUTICAL UNIV

Camphor powder crushing device

ActiveCN223732847UGrain treatmentsMeal powderProcess engineering
The utility model is applicable to the technical field of camphor powder crushing devices, and discloses a camphor powder crushing device, which comprises a crusher, a feed hopper and a discharge pipe which are communicated with the interior of the crusher, a vibrating screen, a return pipe and a delivery pump. The vibrating screen is provided with a feeding port communicated with the discharging pipe, and the vibrating screen is provided with a coarse powder discharging port and a fine powder discharging port. The material return pipe is respectively communicated with the coarse powder discharge hole and the feed hopper; and the input end and the output end of the material conveying pump are communicated with the material returning pipe. According to the utility model, the vibrating screen is arranged outside the crusher, so that camphor powder pre-crushed by the crusher can enter the vibrating screen for screening treatment. Due to the fact that the powder impact force borne by the screen structure used for screening in the vibrating screen is smaller than that borne by the screen structure in the pulverizer, the screen cannot be greatly abraded, and the equipment maintenance cost can be reduced.
Owner:FOSHAN SANSHUI JINGZE CHEM CO LTD

Camphorsulfonate-based flavone photoacid generator and preparation method thereof

The application discloses a camphorsulfonate-based flavone photoacid generator and a preparation method thereof. 16 fatty alkyl, C1-C 16 fatty alkoxy, dimethylamino or phenyl. The camphorsulfonate-based flavone photoacid generator prepared by the application realizes long-wave absorption based on a flavone nucleus, has strong absorption to 248nm and 365nm UV LED light sources, and has high photosensitivity. The camphorsulfonate-based flavone photoacid generator contains a camphorsulfonate group which is directly connected with a flavone aromatic ring. The structure has photosensitive cleavage characteristics, and strong acid camphorsulfonic acid is generated by photolysis. Because the van der Waals volume of camphorsulfonic acid is large, the diffusion of camphorsulfonic acid is slow, and therefore the diffusion in a resin matrix is poor, so that better resolution and line edge roughness can be obtained.
Owner:ANQING BEIHUA UNIV SCI & TECH PARK CO LTD +1

A mildly heat-exothermic light-cured gingival barrier resin composition and its preparation method

PendingCN122075311AImpression capsDentistry preparationsP-dimethylaminobenzoic acidBenzoic acid
This invention provides a mildly exothermic light-cured gingival barrier resin composition and its preparation method. The composition comprises the following components in weight percentage: 40-65% acrylate prepolymer, 30-55% acrylate monomer, 0.1-0.3% camphorquinone, 0.1-0.2% ethyl p-dimethylaminobenzoate and coated ethyl p-dimethylaminobenzoate, 0.2-1.0% coated triethanolamine, 0.1-1.0% ammonium salt, 3-6% thickener, 0.01-0.1% stabilizer, 0.1-0.5% pigment, and 0.5-3% flavoring agent. This invention significantly reduces the curing exothermic temperature by adjusting the photoinitiator system of the light-cured gingival barrier resin product, using a CQ+EDMAB+TEOA photoinitiator system, and pre-treating the photoinitiator with coating and adding an appropriate amount of ammonium salt, thus avoiding the risk of burning the patient's gums without affecting the product's barrier effect.
Owner:HAOBAI (ZHEJIANG) MEDICAL EQUIP CO LTD

Sulfuric acid is found in food and beverages

PendingJP2026066291AFood scienceBiotechnologyDihydroactinidiolide
To provide acetic acid-containing food and beverages that allow the aroma and sweetness of fruit juice to be fully appreciated. [Solution] An acetic acid-containing food or beverage containing fruit juice and one or more components selected from (A) menthyl acetate, (B) dihydroactinidiolide, (C) cineole, and (D) camphor.
Owner:MIZKAN HOLDINGS CO LTD

Synthesis of camphorquinone

The application discloses a camphorquinone synthesis method and belongs to the field of organic chemistry. The camphorquinone synthesis method adopts a 3-bromocamphor air oxidation process, and the catalyst used comprises 2,2,6,6-tetramethylpiperidine N-oxide. In the presence of oxygen, 2,2,6,6-tetramethylpiperidine N-oxide can catalyze oxygen to oxidize iodine camphor to generate camphorquinone and iodine, and has high catalytic efficiency; when the feeding amount of 3-bromocamphor increases (for example, greater than 20g), the camphorquinone can still maintain high yield and purity; it is non-toxic and non-polluting; it can be recycled, and even if recycled more than 10 times, the yield of camphorquinone will not be reduced; it is suitable for being detected by using a gas chromatography method or a mass spectrometry method, and thus the purity of camphorquinone can be conveniently and accurately detected.
Owner:SHANGHAI PHICHEM MATERIAL CO LTD

2-methylisoborneol hapten, its preparation method and application

The application relates to the technical field of 2-methyl isochroman alcohol detection, in particular to a 2-methyl isochroman alcohol hapten, a preparation method and application thereof. The 2-methyl isochroman alcohol hapten has a structural formula as shown in formula (I). The application uses D-camphor as raw material, and a novel 2-methyl isochroman alcohol hapten compound shown in formula (I) is prepared, specific antibodies prepared by the method are used for detecting 2-methyl isochroman alcohol, have excellent specific recognition, and the IC 50 can reach 0.46 ng / mL.
Owner:ZHEJIANG FISHERIES TECH EXTENSION STATION +1

Secondary battery and preparation method thereof, energy storage battery pack and electrical equipment

The present application relates to the field of energy storage, and provides a secondary battery and a preparation method thereof, an energy storage battery pack and an electrical device, wherein the preparation method comprises: forming a first active layer having a first hole and a second active layer having a second hole; the preparation step of forming the second active layer comprises: obtaining a camphor precursor based on second camphor particles and a pre-carbonized solution, and coating the surface of the camphor precursor with a carbonized material; heat-treating the camphor precursor to obtain carbon-coated camphor particles; uniformly stirring the carbon-coated camphor particles, a second negative electrode material, a second conductive agent and a second adhesive with a second dispersed solution to obtain a second coating slurry; covering the second coating slurry on a current collector having the first active layer, wherein the second coating slurry will flow into part of the first holes, and after drying, a second active layer having carbon-coated second holes is formed; and winding or stacking the positive electrode sheet, the negative electrode sheet and the separator to obtain a secondary battery.
Owner:ZHEJIANG JINKO ENERGY STORAGE CO LTD

Composite tailor-welding method for improving yield of aluminum-silicon coating plate integrated door ring

The invention discloses a composite tailor-welding method for improving the yield of an aluminum-silicon coating plate integrated door ring, and belongs to the technical field of tailor-welding methods.The method comprises the steps that a plurality of door ring blanking parts are prepared, all materials are aluminum-silicon coating plates and material pieces which are connected into the integrated door ring in a tailor-welding mode, one material piece is in lap joint with the two adjacent sides, and the other material piece is in lap joint with the two adjacent sides; the lap joint strength of the two parts is achieved through resistance spot welding, other parts are in butt joint, the strength of the other parts is achieved through tailored blank laser welding, and microsphere enhanced welding wires are adopted for tailored blank laser welding. The preparation method of porous microsphere composite metal powder, which is one of the raw materials of the microsphere enhanced welding wire, comprises the following steps: modifying camphor by using cationic starch modified kaolin and sodium lignin sulfonate, and mixing the modified camphor with Al-Si-Sr alloy microsphere powder to form pores. In this way, the yield of the aluminum-silicon coating plate integrated door ring is increased.
Owner:燕龙世润汽车零部件(苏州)有限公司

Automobile fragrance with effect of improving concentration and preparation method of automobile fragrance

The invention relates to the technical field of automobile daily necessities, and discloses an automobile perfume with an effect of improving concentration and a preparation method thereof, the automobile perfume comprises isododecane, eucalyptus oil, rosemary oil, ligusticum wallichii essential oil, limonene, Scottian spearmint oil, agilawood oil, synthetic camphor, synthetic borneol, Hankolin and other components. Through a specific ratio of the eucalyptus oil to the rosemary oil, trigeminal nerve stimulation and acetylcholine enzyme inhibition effects are balanced, and dual effects of instant awakening and continuous concentration are realized; meanwhile, through the synergistic interaction of the ligusticum wallichii essential oil, camphor and borneol, active ingredients are promoted to penetrate through a blood brain barrier, blood supply and oxygen supply of the brain are improved, and central fatigue is relieved from the physiological level. The preparation method comprises the steps of solid phase pre-dissolving, liquid phase blending of graded feeding according to volatility, sealed aging, filtering and filling. The fragrance has the advantages of being comfortable in fragrance and stable in volatilization and release, the visual response time of a driver can be shortened, and the driving safety is improved.
Owner:GUANGZHOU FINE HAO FLAVOR CO LTD

Packaging box

1. Name of the Design Product: Packaging Box. 2. Use of the Design Product: For packaging and storing Compound Camphor Cream. 3. Design Key Points of the Design Product: The combination of shape and pattern. 4. Picture or Photo that Best Illustrates the Design Key Points: Perspective View.
Owner:BEIJING BAOSHUTANG SCI TECH PHARM CO LTD

Salty taste enhancer

PCT designated stageWO2025263033A1Food scienceBiotechnologyMenthone
Provided is a salty taste enhancer having excellent versatility and capable of enhancing saltiness without imparting unnecessary flavor to food and drink. Disclosed is a method for enhancing the salty taste of food and drink, the method comprising adding, to food and drink, one or more selected from the group consisting of 4-methylbenzyl acetate, (1R, 2S, 5R)-N-(4-methoxyphenyl)-2-isopropyl-5-methylcyclohexanecarboxamide, fenugreek extract, methyl 2-octinate, camphor, L-carvone, dihydrocarvone, menthone, 4-methoxyacetophenone, and 3,6-nonadienol. The method does not impair the original flavor of the food and drink.
Owner:TAKASAGO INTERNATIONAL CORP

Method for measuring content of blood-entering chemical components of dripping pill with refreshing throat

The invention relates to the technical field of pharmaceutical analysis, in particular to a method for determining the content of chemical components entering blood of dripping pills with a refreshing throat. According to the method, a gas chromatography-mass spectrometry (GC-MS) technology is adopted, and the chromatographic conditions are as follows: an SH-Stabilwax capillary column is 30 m * 0.32 mm in specification, and the film thickness is 0.25 mu m; the temperature of a sample inlet is 220 DEG C; the split-flow-free sample injection is realized; the sample size is 1 microliter; the flow of a chromatographic column is 2mL / min; the mass spectrum conditions are as follows: the ion source temperature is 200 DEG C; the interface temperature is 230 DEG C; the ionization mode is electron impact ion (EI); the detection voltage is 0.2 KV; the solvent is delayed for 2 minutes; and SIM mode. The method creatively realizes the simultaneous determination of the concentrations of 14 volatile components, namely beta-pinene, limonene, eucalyptol, 3-octanol, isomenthone, menthone, camphor, menthyl acetate, trans-caryophyllene, menthol, borneol, caryophylline, p-cymene and guaiacol, in the throat-refreshing dropping pill or a drug-containing serum sample after taking the throat-refreshing dropping pill. According to the research, accurate monitoring on the drug effect substance groups in the instant-swallowing and refreshing containing dropping pill is realized for the first time, so that not only is a key experimental basis provided for perfecting the quality control standard, but also a new view angle is provided for explaining the modern scientific connotation of multi-component synergistic effect of the instant-swallowing and refreshing containing dropping pill; more scientific data is provided for establishing comprehensive quality control and quantitative research of the medicine in the future.
Owner:GUIZHOU HUANGGUOSHU LISHUANG PHARM CO LTD

A fluorescent probe based on camphor derivatives, its preparation method and application

The present invention discloses a fluorescent probe based on the structure of camphor derivatives, with camphor derivatives as the fluorescent group and 2,4-dinitrophenol group as the recognition group, and the structural formula is as shown in (I): The fluorescent probe of the present invention can be used for the detection of benzenethiol accumulated in water samples and biological samples. The fluorescent probe of the present invention has high sensitivity, good selectivity and anti-interference performance, can quickly identify benzenethiol, shorten the response time, and realize the real-time and effective detection of benzenethiol. The probe of the present invention can achieve benzenethiol imaging in cells and in vivo, is expected to play a role in industrial production and clinical medical detection, and has broad application prospects.
Owner:JIANGSU FOOD & PHARMA SCI COLLEGE

A preparation method of compound dexamethasone acetate cream

The present invention discloses a method for preparing a compound dexamethasone acetate cream, comprising: mixing menthol, camphor, and a crystallization inhibitor to obtain a eutectic solution; the crystallization inhibitor is a mixture of cyclic olefins and unsaturated fatty acids; dexamethasone acetate is added to the eutectic solution, and then mixed with a matrix oil phase and an aqueous phase to obtain the compound dexamethasone acetate cream. The present invention adds a crystallization inhibitor when preparing the menthol and camphor eutectic solution, and the obtained eutectic solution has good homogeneity and is not prone to crystallization. Therefore, the prepared compound dexamethasone acetate cream has stable content of each component and is not prone to granularity at low temperatures, greatly improving production efficiency, product quality stability, and user experience.
Owner:GUANGZHOU BAICAOTANG PHARMA

A camphor-based benzothiazole ratiometric fluorescent probe for the detection of hydrazine, its preparation method and application

This invention discloses a camphor-based benzothiazole ratiometric fluorescent probe for detecting hydrazine, its preparation method, and its application. The fluorescent probe is 3-(benzothiazole-2-yl)-4′-methoxy-5-((4,7,7-trimethyl-3-oxo-3-cyclohexylcyclopentenyl)methyl)-1,1′-biphenyl-4-acetate. Starting with camphor, it first undergoes an aldol condensation reaction with 5-bromosalicylic acid; subsequently, a hexamethylenetetramine formylation reaction yields the corresponding benzaldehyde derivative; then, a coupling reaction with 4-morpholinophenylboronic acid forms a biphenyl structure; next, a coupling cyclization reaction with 2-aminothiophenol constructs a benzothiazole structure; finally, an acetyl chloride substitution reaction yields the target fluorescent probe. This compound exhibits a specific reaction with hydrazine, causing a redshift in fluorescence emission wavelength from 506 nm to 613 nm, thereby achieving sensitive detection of hydrazine in solution. This probe has advantages such as good selectivity, low detection limit, and strong anti-interference ability, and has good application prospects in the fields of environmental monitoring and chemical analysis.
Owner:NANJING FORESTRY UNIV

Topical analgesic gel compositions

Provided are topical analgesic gel compositions having relatively high payloads of menthol and camphor by micro-emulsion technology and methods of preparing topical analgesic gel compositions having relatively high payloads of menthol and camphor. Topical analgesic gel compositions may include from 12 to 16 wt. % menthol; from 4 to 8 wt. % camphor; from 0.1 to 2 wt. % carbomer; and 60 to 70 wt. % solvent. Topical analgesic gel compositions can have a viscosity from 60,000 to 110,000 centipoise.
Owner:BAYER HEALTHCARE LLC

Preparation method of bio-based polyamide material and composite material

PendingCN120647926APolymer scienceExhaust valve
The invention discloses a preparation method of a bio-based polyamide material and a composite material, and the preparation method comprises the following steps: dissolving camphoric acid in water, slowly adding triazole, then adjusting the pH value of a salt solution to 7.5-8.5, and evaporating to remove a solvent to obtain camphoric acid triazole salt; the preparation method comprises the following steps: dissolving sebacic acid and pentamethylene diamine in water to obtain a sebacic acid pentamethylene diamine salt solution; the preparation method comprises the following steps: adding a sebacic acid pentamethylene diamine salt solution, camphor acid triazole salt, caprolactam and an initiator into a reaction kettle, opening an exhaust valve of the reaction kettle, heating to 170-180 DEG C, closing the exhaust valve when the reaction pressure is 0.3-0.5 MPa, heating to 260-270 DEG C, keeping the pressure at 1.0-1.5 MPa, reacting for 1-3 hours, cooling to 220-230 DEG C, and reacting for 2-5 hours; and opening an exhaust valve of the reaction kettle, slowly deflating to normal pressure, vacuumizing the reaction kettle, and reacting for 0.5-1 hour under the gauge pressure of-0.07 to-0.1 MPa, so as to obtain the bio-based polyamide material. According to the material, transparency, mechanical properties and chemical resistance of polyamide are improved, and the polyamide has excellent properties such as ultraviolet resistance, antibacterial property and flame retardance.
Owner:ZHENGZHOU UNIV

Optical resin and preparation method thereof

The invention discloses an optical resin and a preparation method thereof, and belongs to the technical field of polyester synthesis and preparation. The preparation method comprises the following steps: sequentially carrying out esterification reaction and polycondensation reaction on a mixture containing terephthalic acid, alcohol and a catalyst to obtain the optical resin, the alcohol is selected from at least one of ethylene glycol, 1, 4-cyclohexanedimethanol and camphor alcohol; the catalyst is a titanium catalyst. According to the invention, by introducing camphor alcohol, the light transmittance and heat resistance of the copolyester are greatly improved. The mechanical property and processability of the optical resin are superior to those of a traditional PCTG material. In addition, the preparation method provided by the invention does not need to change a traditional PCTG production line during large-scale production, and the product performance is stable.
Owner:DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES

Method for extracting D-chiro-inositol from carob beans and application of D-chiro-inositol

The invention relates to carbocyclic compounds, in particular to the field of cyclohexanehexol, and particularly relates to a method for extracting D-chiro-inositol from carob beans and application of the D-chiro-inositol. According to the method, an acid hydrolysis method is used, TFA is used as a catalyst, L-(-) camphorsulfonic acid is used as a specific recrystallization selective agent, high-purity DCI is obtained from carob beans, and the method has the advantages of being high in extraction efficiency, DCI yield and purity, low in cost, environmentally friendly and the like.
Owner:SHANDONG AIMEIKE BIOTECHNOLOGY CO LTD