125 results about "Color developer" patented technology

The present invention relates to thermochromic microcapsules coated with a silica hybrid-modified epoxy resin wall material. The microcapsules are composed of a silica hybrid-modified epoxy resin wall material, which is a coating layer obtained by in-situ hybridization of a silicon-sourced epoxy resin with a polyamine curing agent, and a core material comprising a thermochromic material, a color developer, and a temperature-regulating solvent. The microcapsules are prepared quickly and simply, and the resulting thermochromic microcapsules have excellent thermal stability and are completely free of health-damaging aldehydes. The microcapsule wall material has high density and excellent mechanical properties, maintaining the integrity and elasticity of the capsule under external impact. Furthermore, the capsule wall has excellent light transmittance, resulting in a more vibrant color for the microcapsules.

To provide a thermally conductive grease composition which has high thermal conductivity, has excellent coatability, and allows a temperature distribution to be visually recognized.SOLUTION: A thermally conductive grease composition containing a base oil, a thermally conductive filler, and a capsule pigment encapsulating a leuco dye, a developer, and a color change temperature regulator.SELECTED DRAWING: None

The invention belongs to the technical field of sarcosine detection, and relates to an integrated sarcosine detection device as well as a preparation method, a detection method and application thereof. The device consists of a sample bottle and a double-layer paper chip, wherein the double-layer paper chip is fixed in a bottle cap of the sample bottle; the double-layer paper chip comprises a target recognition layer and a detection layer, the target recognition layer is Whatman 1 # filter paper loaded with SOx / HRP-coated MAF-7 biological composite materials, the detection layer is Whatman 1 # filter paper loaded with TMB color developing agents, and the layers are bonded through water-soluble double-faced adhesive tapes. After a sample is added into the sample bottle, the bottle is turned over, SOx can recognize and oxidize sarcosine to obtain H2O2, after the double-sided adhesive tape is fully reacted and dissolved, HRP oxidizes a substrate TMB in the presence of H2O2 to generate a bright blue product oxTMB, and RGB signals are recorded through a handheld colorimeter. The detection device can be used for quantitatively detecting the sarcosine content of the prostatic cancer marker.

The present invention discloses a rapid detection method for sodium polydisulfide (PDPS). The method comprises preparing a buffer solution and an Elma color developer; preparing multiple sets of sodium polydisulfide (PDPS) solutions of different concentrations; pretreating the sodium polydisulfide (PDPS) solutions with an excess of a boron hydride compound as a reducing agent to reduce the sodium polydisulfide to a thiol-containing compound; and removing the excess reducing agent. An absorbance test is performed to establish a standard curve for the concentration and absorbance of the brightener, and the concentration of the sodium polydisulfide (PDPS) in the electrolyte to be tested is measured using the established standard curve. The method uses a boron hydride compound as a reducing agent and utilizes ultraviolet-visible spectroscopy to rapidly detect the content of the brightener, sodium polydisulfide (PDPS). The method is convenient and simple to operate, provides highly accurate test data, and is applicable to the detection of electroplating bath additives in various systems.

This invention discloses a flame-retardant PBT composite material, comprising the following components by weight: 40-73 parts PBT; 0.8-3.2 parts alkali lignin; 13-18 parts brominated flame retardant; 3-5 parts antimony trioxide; and 0.5-1 parts pentaerythritol. The weight-average molecular weight of the alkali lignin is 3000-10000. By selecting alkali lignin and pentaerythritol with specific molecular weights and using antimony trioxide as a laser color developer, this invention can effectively improve the laser marking defects of PBT composite materials modified with brominated flame retardants and has the advantage of thin-walled flame retardancy.

To provide a recording material in which a printing part is excellent in water resistance and alcohol resistance.SOLUTION: There are provided a developer containing a compound represented by the following general formula (1) (wherein, n represents 0 to 2. R1 represents a halogen atom, a straight or branched chain alkyl group having 1 to 8 carbon atoms, a straight or branched chain alkoxy group having 1 to 8 carbon atoms or a substituent of the formula (2). R2 represents a hydrogen atom, an alkyl group which may be substituted or an aryl group which may be substituted.), a recording material containing the developer, a thermosensitive recording layer containing the recording material and a thermosensitive recording paper having the thermosensitive recording layer.SELECTED DRAWING: None

Disclosed is a heat-sensitive recording body which has, on one side of a paper support, a primer layer containing hollow particles having a hollow ratio of 80 to 98% and a heat-sensitive recording layer containing a leuco dye and a color developer in this order, and on the other side of the paper support, a back layer containing a pigment, wherein the back layer has a Gurley smoothness of 500 seconds or more, and the hollow particles are contained in a proportion of 5 to 30% by mass in the total solid content of the primer layer.

The present invention discloses a preparation method and application of a sulfonylurea-structured thermosensitive color developer, relating to the technical field of color developers. The core of the thermosensitive color developer is a compound of formula 1 containing a sulfonylurea structure. The preparation method is achieved through three steps: esterification of raw materials to synthesize intermediate 1, borylation to obtain intermediate 2, and then synthesis of the target compound through the Suzuki reaction. Through the synergistic effect of the sulfonyl group and the urea group, the regulation of the hydrogen bond network and the optimization of the electron transfer efficiency are realized, solving the technical bottlenecks of the high-temperature activation requirement and insufficient color development stability of traditional thermosensitive color developers.

This invention provides a color developer for faded ink stains on Palmyra manuscripts, along with its preparation and application methods, relating to the field of cultural relic conservation and restoration technology. Specifically, it includes component A and component B; component A comprises hydrophobic fumed silica and n-butanol; component B comprises hydrophobically modified cellulose, liquid paraffin, and n-butanol; mixing components A and B yields the color developer for faded ink stains on Palmyra manuscripts. This invention uses low-cost, readily available, and environmentally friendly raw materials to prepare components A and B separately. Through a synergistic effect, the two components enhance the color and clarity of faded ink stains on the surface of the Palmyra manuscript, achieving a re-coloring effect. The prepared color developer is safe and reliable, exhibits significant color development, and also possesses excellent resistance to dry heat aging and ultraviolet aging. Furthermore, it does not alter the appearance of the Palmyra manuscript, has minimal interference with the manuscript itself, and will not damage the manuscript after use.

The invention discloses an environment-friendly phenol-free thermo-sensitive paper label material and a preparation method thereof, and relates to the technical field of thermo-sensitive paper. When the environment-friendly phenol-free thermo-sensitive paper label material is prepared, cellulose sequentially reacts with cyanoacetic acid, 4-(2-chloroethyoxyl) benzophenone and N, N-dimethylpropyl-1-amine to prepare modified cellulose; the preparation method comprises the following steps: carrying out reaction on silicon dioxide and diethylenetriamine propyl trimethoxy silane to prepare pre-modified silicon dioxide; reacting the pre-modified silicon dioxide, phosphorous acid and formaldehyde to obtain modified silicon dioxide; uniformly mixing functional styrene-butadiene emulsion, modified cellulose, modified silicon dioxide, a color developing agent, a lubricating agent, a sensitizer and colorless pigment to prepare a thermosensitive coating; and uniformly coating the surface of thermosensitive base paper with the thermosensitive coating by using a coating machine, and drying to obtain the environment-friendly phenol-free thermosensitive paper label material. The environment-friendly phenol-free thermo-sensitive paper label material prepared by the invention has excellent wear resistance, antibacterial property, light resistance and flame retardance.

The invention belongs to the technical field of pesticide residue detection, and particularly discloses a pesticide residue content detection device for vegetable processing, which comprises a bottom plate and supporting legs at the lower part of the bottom plate, a left supporting frame and a right supporting frame are respectively arranged at the two ends of the upper wall of the bottom plate, and a vegetable segmentation cutting mechanism is arranged on the left supporting frame; an intermittent rotating assembly and a juice receiving assembly are arranged on the upper wall of the bottom plate, preparation cylinders are arranged on the intermittent rotating assembly in an array mode around the axis, a supporting plate is arranged at the upper end of the right supporting frame and extends to the position above the intermittent rotating assembly, and a crushing assembly and a liquid preparation assembly are arranged on the supporting plate. And the crushing assembly and the liquid preparation assembly are respectively aligned with the two adjacent preparation cylinders up and down. Vegetables are cut in sections, different parts of the cut vegetables are automatically and respectively crushed, and a microliter enzyme and color developing agent mixed solution is added to prepare a detection sample.

The present invention relates to a multicolor detection kit and digital quantification method for the total antioxidant capacity of beverages, belonging to the field of chemical analysis and testing. The present invention establishes a linear correlation between the hue H value and the total antioxidant capacity of antioxidants. By combining the color development and discoloration process of a color developer, the color development results are collected using digital imaging devices such as mobile phones. The hue H value obtained by digital imaging enables rapid determination of the antioxidant capacity of beverages. The present invention develops a novel multicolor development kit that facilitates digital quantification of total antioxidant capacity, establishing a more efficient and intuitive evaluation method for the quality assessment of the antioxidant capacity of beverages.

To provide ink for inkjet printer which is capable of marking under a normal temperature environment by using an inkjet printer, and applicable to marking on refrigerated products or frozen products, and a temperature indicator using the ink.SOLUTION: Ink for inkjet printer according to the present invention is ink in which temperature indicator is dissolved into solvent, where the temperature indicator contains leuco dye, developer and decoloring agent, the decoloring agent is a mixture of a plurality of kinds of cholesterol derivative, each of the plurality of kinds of cholesterol derivative has predetermined polar group, polar site and / or polar structure by 1 or more and 3 or less, and the solvent is a mixture of main solvent having relatively high volatility and sub solvent having relatively low volatility.SELECTED DRAWING: Figure 2

The invention discloses pressure-sensitive color-changing anti-forgery ink and a preparation method thereof. The ink is prepared from dye-loaded aerogel particles, four-needle zinc oxide whiskers, water-based acrylic resin, a color developing agent, porous silicon dioxide and a dispersing agent. The stress concentration effect of the four-needle zinc oxide whiskers triggers the aerogel to break and release the dye, so that low-pressure instantaneous color development is realized. Industrial by-products and building material-grade raw materials are adopted, the production cost is low, and mass production can be achieved without complex equipment. The ink trigger pressure is as low as 0.3 MPa, the developing time is less than or equal to 3 seconds, the background color delta E is less than or equal to 0.8, and the method is suitable for public anti-counterfeiting scenes such as food packaging and daily chemical labels.

This application relates to a method, apparatus, device, storage medium, and program product for detecting battery pack delamination. The method includes: performing target detection on an initial image of the battery pack using a pre-trained position detection model to obtain the position information of each cell in the battery pack; wherein, in the initial image, each cell is arranged in its original position before disassembly and has been impregnated with a color developer; performing region segmentation based on the position information and the impregnation color of the color developer to determine the bottom surface image of the delamination cell, and performing semantic analysis based on the impregnation color of the color developer to identify marking information within the bottom surface image; and determining the delamination detection result of the battery pack based on the marking information within the bottom surface image. Using this application can improve detection efficiency and increase the detection accuracy of battery pack delamination.

Provided is a developer capable of yielding a thermosensitive recording material that has excellent color developing sensitivity and printing part preservability. The developer contains a compound represented by formula (1). (R1, R2, R3 are groups represented by formula (2), which may be the same or independently different from each other.) (In formula (2), m is 0 or 1, A is a linking group selected from the group consisting of -C(=O)-, -C(=S)-, -C(=O)-NH-, -C(=S)-NH-, -C(=O)-NH-SO2-, -C(=S)-NH-SO2-, -SO2-, -SO2-NH- and -C(=O)-O-, and B is any one selected from the group consisting of an aliphatic hydrocarbon group having 1 to 30 carbon atoms which may have a substituent, an alkoxy group having 1 to 30 carbon atoms which may have a substituent, an aryl group having 6 to 18 carbon atoms which may have a substituent, or an arylalkyl group having 7 to 48 carbon atoms which may have a substituent.)

This invention discloses a skin marking system for ultrasound imaging, a dedicated coupling agent, and its application method, relating to the field of medical ultrasound imaging auxiliary equipment and medical coupling agents. It includes a dedicated photocurable coupling agent and a specially designed ultrasound probe. The dedicated photocurable coupling agent comprises a water-soluble medical ultrasound coupling agent matrix, a photocurable hydrogel precursor, a photoinitiator, and a color developer. The specially designed ultrasound probe includes a probe housing with a built-in ultrasound transducer and a probe end face for contacting the skin. At least one ultraviolet light source is integrated in the central region of the probe end face. The relative position of the ultraviolet light source and the ultrasound transducer is spatially calibrated to establish a preset coordinate mapping relationship between the irradiation area of ​​the ultraviolet light source and the ultrasound scanning area of ​​the ultrasound transducer. This invention achieves simultaneous and precise skin marking and diagnostic guidance for ultrasound imaging through an ultrasound probe integrating an ultraviolet light source and a photocurable dedicated coupling agent.

The present invention relates to a double-layered, two-color erasable thermal paper and a preparation method thereof, and relates to the technical field of printing consumables. The two-color erasable thermal paper of the present invention comprises a protective layer, a thermal coating, and a substrate arranged in sequence from top to bottom; the thermal coating comprises a red thermal coating and a black thermal coating arranged in sequence from top to bottom. The red thermal coating comprises the following raw materials: a color developer A, a red thermal dye, a cosolvent A, an erasing aid A, an epoxy resin adhesive, a polyamide curing agent, and a zinc oxide filler; the black thermal coating comprises the following raw materials: a color developer B, a black thermal dye, a cosolvent B, an erasing aid B, an epoxy resin adhesive, a polyamide curing agent, and a zinc oxide filler. The two-color erasable thermal paper of the present invention has a high color density, does not overlap and bleed after repeated erasure, can be completely erased, and can be repeatedly erasable.

The invention relates to the technical field of cosmetic production, in particular to a preparation method of an anti-inflammatory soothing composition containing plant extracts.The composition comprises a workbench, a guide rod is mounted on the inner side of the workbench, a threaded rod is mounted on the front side of the guide rod, a mounting block is in threaded connection with the outer side of the threaded rod, and a motor is mounted on the right side wall of the guide rod; a clamping cavity is formed in the bottom face of the inner side of the workbench. According to the preparation device, the rotatable injector is arranged and can automatically deflect according to the position relation with the containing vessel, so that the discharging end of the injector is located on the right upper side of the containing vessel all the time, cosmetics can be conveniently and accurately added into the middle of the inner side of the containing vessel, and scattering is avoided; the knocking balls can be driven to rotate circumferentially and knock the convex strips, so that the containing vessel can vibrate, the mixing of the cosmetics and the color developing agent can be accelerated, the reaction rate can be increased, the reaction time can be shortened, and the sample preparation efficiency can be further improved.

The invention relates to the technical field of thermochromic materials, in particular to a mixture of multi-color-gamut and multi-stage controllable thermochromic microcapsules and a preparation method of the mixture, and the mixture of the thermochromic microcapsules comprises at least two thermochromic microcapsules; each thermochromic microcapsule comprises a core material and a wall material, the core material comprises a color developing agent, a leuco agent and a thermal response carrier, the melting points of the thermal response carriers of the thermochromic microcapsules are different, and the unresponsive colors of the thermochromic microcapsules have obvious chromatic aberration. The thermochromic microcapsules with different thermal reaction carrier melting points are synergistically matched, so that a mixed color which is not responded by the thermochromic microcapsules is displayed at low temperature; as the temperature rises, the thermochromic microcapsules change color in sequence from low to high according to the melting point of the thermal reaction carrier, so that clear switching of the color along with the temperature change is realized, and the requirement of multi-section temperature indication is accurately met; and multiple color gamuts can be flexibly allocated, diversified color requirements are met, and the application boundary is greatly widened.

This invention relates to a two-color erasable thermal paper and its preparation method, belonging to the field of printing consumables technology. The two-color erasable thermal paper includes, from top to bottom, a protective layer, a thermal coating layer, a base layer, and a substrate. The components of the thermal coating layer, by weight, include: 10-20 parts of filler B, 20-40 parts of color developer, 30-50 parts of adhesive resin B, 10-20 parts of dye, and 10-20 parts of temperature-regulating agent. The addition of a temperature-regulating agent to the thermal coating layer of this invention enables reversible erasing and writing, while improving its color retention performance, eliminating the need for sensitizers. The heat-insulating filler used in the base layer layer of this invention is a high-hollow-ratio material, which can enhance heat insulation and improve the heat resistance and sensitivity of the thermal two-color reversible erasable paper.

To copy written information to improve reliability of management of delivery objects.SOLUTION: A courier slip includes: an upper base material 10 formed by connecting a copy area 10a with a non-copy area 10b; a coloring agent layer 20 laminated on an entire lower surface of the upper base material 10; an adhesive layer 30 laminated on an area, which faces the non-copy area 10b, of a surface of the coloring agent layer 20 which is opposite to the upper base material 10; a middle base material 70 including an area facing the copy area 10a and an area facing the non-copy area 10b; a developer layer 50 laminated on an entire upper surface of the middle base material 70; an adhesive layer 30b laminated on an entire lower surface of the middle base material 70; a lower base material 60 including an area facing the copy area 10a and an area facing the non-copy area 10b; and a release agent layer 40 laminated on an entire upper surface of the lower base material 60. Information entry columns are respectively provided on upper surfaces of the copy area 10a and the non-copy area 10b, and a slit 13 is formed at a boundary between the copy area 10a and the non-copy area 10b.SELECTED DRAWING: Figure 1

Provided is a developer capable of yielding a thermosensitive recording material that has excellent color developing sensitivity and printing part preservability. The developer contains a compound represented by formula (1). (R1, R2, R3 are groups represented by formula (2), which may be the same or independently different from each other.) (In formula (2), m is 0 or 1, A is a linking group selected from the group consisting of -C(=O)-, -C(=S)-, -C(=O)-NH-, -C(=S)-NH-, -C(=O)-NH-SO2-, -C(=S)-NH-SO2-, -SO2-, -SO2-NH- and -C(=O)-O-, and B is any one selected from the group consisting of an aliphatic hydrocarbon group having 1 to 30 carbon atoms which may have a substituent, an alkoxy group having 1 to 30 carbon atoms which may have a substituent, an aryl group having 6 to 18 carbon atoms which may have a substituent, or an arylalkyl group having 7 to 48 carbon atoms which may have a substituent.)

Disclosed is a heat-sensitive recording body, which is a heat-sensitive recording body provided with a primer layer formed on one side of a support and a heat-sensitive recording layer formed on the primer layer, the heat-sensitive recording layer containing a leuco dye and a color developer, the primer layer containing hollow particles and a binding resin, the maximum particle diameter (D100) of the hollow particles being 10 to 30 µm, the particle diameter (D50) of 50 vol% of the hollow particles being 4.0 to 15 µm, the ratio D100 / D50 of the maximum particle diameter (D100) to the particle diameter (D50) of the hollow particles being 1.8 to 3.0, and the vol% of the hollow particles having a particle diameter of 2.0 µm or less being 1% or less.

The present invention relates to a device for virus screening based on a bowl-shaped centrifugal microfluidic chip, wherein the device comprises: a clamping disk interlocked with a base disk and a cover disk; a conical chip layer matched with the clamping disk and configured as a hollow cone with a microporous wall structure; a bowl-shaped chip arranged in a three-dimensional intersecting shape formed by the conical chip layer and the clamping disk; and a motor shaft inserted into the center of the clamping disk, the motor shaft being used to centrifuge and mix the bowl-shaped chip. The device for virus screening based on a bowl-shaped centrifugal microfluidic chip of the present invention does not require professional operators and is free of aerosol contamination. It takes only 3 minutes to input a trace sample, freeze-dried powder, reagents, and a color developer, and then achieves fully automatic operation and visual rapid detection of multiple targets in the sample through centrifugal mixing and positive pressure drive. This can significantly improve detection accuracy and screening speed, and is widely used in airport customs, community homes, and other places.

The invention discloses a microneedle patch containing alpha-naphthylamine carbon dots and application of the microneedle patch to detection of nitrite through colorimetric-fluorescence dual-mode signals, and belongs to the technical field of analytical chemistry. Alpha-naphthylamine is used as a carbon source and is prepared into the blue fluorescence alpha-naphthylamine carbon dots, the carbon dots have good color and fluorescence changes, and the blue fluorescence alpha-naphthylamine carbon dots are used as a color developing agent to be prepared into the microneedle patch so as to realize NO2-colorimetric-fluorescence dual-sensing application in food. The microneedle patch provided by the invention is used for carrying out nondestructive testing on a sample, whether nitrite exceeds the standard or not can be preliminarily judged through naked eyes, a colorimetric-fluorescence dual-mode signal is read through mobile phone photographing to obtain photographing data, and the content of nitrite in the sample can be accurately quantified after further processing; therefore, rapid and simple detection of nitrite in food is realized. Therefore, the invention has important application value and wide application prospect.

The application belongs to the technical field of anti-counterfeiting, and particularly relates to an anti-counterfeiting pigment, a preparation method and application thereof. The application provides an anti-counterfeiting pigment, which comprises the following raw materials in parts by weight: 30-45 parts of nanocellulose suspension; 0.3-12 parts of color developer; 6-15 parts of color developing agent; 35-53 parts of emulsifying wax; 1.5-20 parts of polyethylene glycol; 12-25 parts of stearic acid; 2-15 parts of talc; and 5-10 parts of nanometer titanium dioxide, wherein the concentration of the nanocellulose suspension is 2-5%. The nanometer titanium dioxide and the nanocellulose suspension are added to the anti-counterfeiting pigment, and the nanometer titanium dioxide, the nanocellulose suspension, the color developer, the color developing agent, the emulsifying wax, the polyethylene glycol, the stearic acid and the talc are combined to prepare the pigment, which is added to anti-counterfeiting ink, so that the adhesion of the anti-counterfeiting ink and paper can be improved.

Disclosed is a phenol-free heat-sensitive recording material comprising: (a) a base material; from one side close to the base material, the coating sequentially comprises: (b) a bottom coating; and (c) a heat-sensitive layer; wherein the heat-sensitive layer includes: a first developer containing a sulfonamide compound represented by the following formula (1): wherein R1 and R2 may be the same or different and each independently represents a hydrogen atom, an alkyl group having 1-4 carbons, an alkoxy group having 1-4 carbons, or a halogen atom; one or more second color developing agents containing at least one phenyl ureide compound represented by the following formula (2): wherein R3 and R4 may be the same or different; and each independently represents a hydrogen atom, a halogen atom, a nitro group, an amino group, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkylcarbonyloxy group, an arylcarbonyloxy group, an alkylcarbonylamino group, an arylcarbonylamino group, an alkylsulfonylamino group, an arsulfonylamino group, a toluenesulfonyl group, a toluenesulfonyloxy phenyl group, a monoalkylamino group, a dialkylamino group, or an arylamino group; and one or more stabilizers selected from the group consisting of compounds represented by formulae (3) and (4) and derivatives thereof.

The invention relates to the technical field of gas detection, in particular to a chemical reaction-based color developing label for gas detection and a preparation method thereof, and the preparation method comprises the following steps: mixing different color developing agents with different resins, then simultaneously carrying out electrostatic spinning, and finally spraying modified chitosan and carrying out ultraviolet curing to obtain the color developing label. The color developing label for gas detection can detect various gases at the same time, has good mechanical properties, can be used in a humid environment, and is high in response speed.

Disclosed is a heat-sensitive recording material comprising the following: a support having at least one colored surface; and a light-scattering layer on the colored surface, wherein the light-scattering layer contains hollow polymer particles and a clarifying agent, the content of the hollow polymer particles is 6 to 35 mass % based on the total solids content of the light-scattering layer, the content of the clarifying agent is 1 part by mass or more, on a solids basis, per part by mass of the hollow polymer particles, and the light-scattering layer is substantially free of a dye precursor and a color developer, and wherein A) the clarifying agent consists of a fatty acid amide, or B) the clarifying agent comprises a combination of a fatty acid amide and at least one member selected from the group consisting of a compound represented by the following formula (1) and 1,2-bis(phenoxymethyl)benzene;wherein in the formula, Xs are the same or different, and each represents CH3 or Cl.