30 results about "Fixative" patented technology

The invention provides a multifunctional aerogel material for blood component protection and a preparation method of the multifunctional aerogel material. Gellan gum, hyaluronic acid, Pullulan, Lubrajel CG andpoly(gamma-glutamic acid), derivatives or a mixture thereof are taken as a skeleton to act with a novellight-sensitive material, aerogel or a precursor for preparation of the ready-to-useaerogel material, and then multifunctional ready-to-useaerogel composite is prepared from the ready-to-useaerogel material as well as raw materials includingglucose, a novel solvent, a novel fixing agent, a buffering agent, a stabilizer, a novel preservative, a surfactant, a high-molecular compound, essential oil, an antioxidant and the likewith a three-spectral-line high-energy photocuring method by utilizing a high polymer material such as hyaluronic acid and the like as the skeleton. The material has the characteristics of being convenient to use, green, environment-friendly and the like, the whole blood component treated with the material keeps good cellular morphology, is stored for a long time, reducesbatch-to-batch difference and is an ideal additive for a whole blood controlling product and other products, and the material can also be applied to collection, storage and transfer of tissue cells as well as fields of cosmetics, food, drugs and the like.

The invention discloses an excrement preserving fluid and applications thereof. Ethanol is taken as a fixing agent, sodium citrate is taken as an auxiliary fixing agent, EDTA-disodium is taken as an anti-coagulant, Tris-HCl is taken as a buffer solution, NaCl is taken as an ion strength maintaining agent, and the preserving fluid also comprises lauryl sodium sulfate. Through a reasonable formula,the number, composition, and abundance of microbes in an excrement sample are stabilized; the accuracy of sequencing analysis on human intestinal flora is guaranteed; the preserving fluid can preservean excrement sample at a room temperature; compared with a conventional preserving fluid, the preserving effect is better, moreover, provided preserving fluid does not contain any toxic component such as guanidinium thiocyanate, and the operation is safer.

The invention discloses a fixing agent for repairing lead-cadmium contaminated soil and preparation and application methods thereof. The preparation method of the fixing agent comprises the following steps: 1) dissolving polyvinyl alcohol in water by heating; 2) pouring calcium dihydrogen phosphate into a solution; 3) adding sodium bicarbonate; 4) adding sodium alginate and carrying out magnetic stirring; and 5) dropping the above solution with a syringe into a saturated boric acid and calcium chloride cross-linked fluid so as to prepare the fixing agent. The fixing agent is applied to lead-cadmium contaminated soil. By the use of the fixing agent, fixed rate of available lead and fixed rate of available cadmium respectively reach 61% and 38%.

The invention relates to a buffer system comprising maleic acid and maleic acid dipotassium salt, for use with formalin-containing fixative solutions. The buffer system is soluble / miscible in dehydration solutions including alcohols, ketones, and monomethyl ethers, thereby preventing formation of precipitates in fluid lines and valve systems of automated tissue processors.

The invention relates to a flavor nail polish comprising the following ingredients according to proportions by weight: 10-30 portions of ethyl acetate, 20-40 portions of butyl acetate, 10-20 portions of nitro cellulose (1 / 2S), 15-35 portions of amino resin, 0.1-1 portion of essence, and 1-5 portions of amphor. The flavor nail polish also comprises 0.5-1 portion of natural musk fragrance fixatives. The essence contains rose essence, jasmine essence, lemon essence, apple essence, sandal wood oil essence or natural vegetable oil essence. The flavor nail polish not only has the same function of beautifying the nail as the common nail polish, but also has various fragrances which lead the nail polish to have no more pungent flavor, insteadly have a flavor leading people to feel fresh and pleased, is the only one in the existing market and is very suitable for market promotion.

The invention relates to the technical field of food additive preparation, in particular to a compounded color fixative for aquatic products and a preparation method of the compounded color fixative.Raw materials of the compounded color fixative include, by mass, 6-9 parts of ascorbic acid, 55-65 parts of D-sodium erythorbate, 4-9 parts of nicotinamide, 16-23 parts of sodium citrate, 18-25 partsof citric acid, 5-8 parts of trehalose, 2-4 parts of an antioxidant, 1.5-3.0 parts of a bacteriostatic agent, 2.5-3.5 parts of an additive, 5-10 parts of a color fixative adjuvant, and a proper quantity of an arctium lappa extract liquid. The prepared compounded color fixative for the aquatic products can not only reduce the fading speed of the aquatic products but also significantly reduce the oxidation speed of the aquatic products, so that colors of the aquatic products are ensured; and besides, the compounded color fixative can also improve freshness of the aquatic products so that uniqueflavors of the aquatic products can be maintained for a long time.

The invention discloses a primer for shining surfaces. The primer comprises the following components in percentage by weight: 30 to 35 percent of acrylic resin, 12 to 16 percent of iron oxide red, 22 to 30 percent of talcpowder, 3 percent of butyl acetate, 2 to 3 percent of adhesion aid, and 10 to 14 percent of dimethylbenzene. A method for preparing the primer for the shining surfaces comprises the following steps of: grinding the components and stirring, adding a fixing agent which accounts for 16 to 20 percent of the total amount and has the solid content of 50% to form a primer, and adding a diluent into the primer in the weight ratio of 1:1 to finish the preparation. Compared with the prior art, the primer has the advantages that: 1, the primer has high adhesion and can be firmly adhered to smooth planes, and the adhesion is less than or equal to level 2; 2, the drying speed is high, the surface drying needs 5 minutes, and the hard drying only needs 1 hour; 3, the primer is impact-resistant, and the positive impact is 50kg / cm and the negative impact is 50kg / cm; 4, the covering rate is high, and is less than or equal to 30g / m <2>; and 5, the glossiness is less than equal to 30.

The invention relates to a glass antifogging agent and a preparation method thereof, and belongs to the technical field of preparation of glass antifogging agents. The antifogging agent comprises a liquid A and a liquid B, wherein the mass ratio of the solution A to the solution B is (1:2)-(1:6), and the pH value of the antifogging agent is 6-9; wherein the liquid A is prepared from the following components in parts by mass: 5 to 25 parts of modified polysilazane and 10 to 50 parts of solvent; the liquid B is prepared from the following components in parts by mass: 1-10 parts of sodium dodecyl benzene sulfonate, 1-10 parts of nonylphenol polyoxyethylene ether, 10-50 parts of a dispersing agent, 1-10 parts of a fixing agent and 80-200 parts of water. The method includes steps of: uniformly mixing the solution A and the solution B to form a mixed solution to prepare the antifogging agent, wherein if the pH value of the mixed solution is not 6-9, adjusting the pH value of the mixed solution by using a pH regulator to obtain the antifogging agent disclosed by the invention. The antifogging agent is good in antifogging effect and durability; during use, a coating can be formed only through normal-temperature curing.

The invention relates to an anti-adhesion hydrophobic coating formula for a pipette tip and a preparation process, and the hydrophobic coating formula is prepared from the following components in parts by weight: 20-35 parts of nano silicon dioxide, 25-40 parts of fluorosilane, 8-12 parts of polyvinyl alcohol nano microspheres, 5-20 parts of a fixing agent, 2-4 parts of a defoaming agent and 20-35 parts of a solvent. The adopted raw materials are simple and easy to obtain, the preparation technology is simple and convenient, liquid drop residues on the surface of the pipette tip can be effectively reduced, the accuracy of the pipette volume can be improved, the obtained hydrophobic coating is good in transparency and convenient to observe in the liquid taking process, and the requirement for large-batch production can be met by forming in a spraying mode.

The present disclosure relates to cosmetic agents which, in addition to ethanol and fragrances, contain at least one fixing agent mixture for the fragrances and have a high and long-lasting deodorizing action. Furthermore, the present disclosure relates to the use of these agents for the treatment of body odor.

A composition for and method of practicing nasal hygiene to wash and moisturize the nasal passage. Where the nasal wash comprises a liquid homogenized compound of water, chlorine dioxide (or source thereof), olfactory stimulants, unsaturated fatty acids, inorganic salt, fixing agents. Where the unsaturated fatty acid component comprises from 0.1% to 3% by weight of the compound.

The invention is suitable for the technical field of essence preparation, and provides a preparation method of fruity flavor type natural essence. The preparation method comprises the following stepsof step (1), weighing 18-32 parts by weight of fruity flavor fermentation original pulp and 4-9 parts by weight of fruity flavor flavoring bases, and performing sufficient mixing; step (2), weighing 3-7 parts by weight of perfume fixatives, adding the weighed perfume fixatives into the mixed materials obtained in the step (1), and performing sufficient mixing; and step (3) weighing 50-80 parts byweight of n-butanol, adding the weighed n-butanol into mixed materials obtained in the step (2), performing heating to 60 DEG C, performing sufficient stirring to a dissolving state, and performing natural cooling to room temperature so as to obtain the fruity flavor type natural essence. According to the preparation method disclosed by the invention, the fruity flavor fermentation original pulp is used as a main raw material, apple skin, orange skin and pomelo skin are subjected to fermentation and enzymolysis, and the fruity flavor type natural essence is prepared; the raw materials are easyto obtain and low in price, and the fruity flavor type natural essence has sour and sweet fragrance of fruits, and is rich in layering; and besides, the fruity flavor flavoring bases and the perfumefixatives are also increased, so that the retention time of fragrance is prolonged, and the fragrance of the essence can be durable.

Oilfield treatment compositions contain water, hydrochloric acid at a concentration between 15 wt % and 45.7 wt % and a first and second fixing agent. The first fixing agent comprises urea, a urea derivative or both. The second fixing agent may be a mixture or amines and alcohols. These compositions provide corrosion inhibition when exposed to steel. The compositions may also contain an inhibitor aid.

The invention relates to a hairstyle fixing agent, and belongs to the technical field of cosmetics. The hairstyle fixing agent is prepared from, by weight, 10-15 parts of lauryl sulfate, 1-8 parts of acetic acid, 6-12 parts of L-cysteine, 0.5-3 parts of diethylenetriamine pentaacetic acid, 2-9 parts of aminomethyl propanol, 0.8-5 parts of chitosan, 0.2-5 parts of perfume and 50-60 parts of salt-removing water. According to the hairstyle fixing agent, the lauryl sulfate, the acetic acid, the L-cysteine, the diethylenetriamine pentaacetic acid, the aminomethyl propanol and the chitosan are adopted to be combined with other raw materials, the hairstyle fixing agent is softer, a good hairstyle can be maintained on the condition that the humidity is high, and the hairstyle fixing agent is not prone to being contaminated by dust.

The invention discloses a fixing agent. The fixing agent comprises 0.01-0.02 M of sodium dihydrogen phosphate dihydrate, 0.01-0.02 M of sodium dihydrogen phosphate, 0.05-0.15 M of sodium chloride, 4-6% of paraformaldehyde, and the balance of water. Further, the pH value of the fixing agent is 7.0-7.4. A preparation method of the fixing agent comprises the following steps: 1, accurately weighing sodium dihydrogen phosphate dihydrate, disodium hydrogen phosphate and sodium chloride into a beaker, adding a proper amount of ultrapure water, and uniformly stirring and mixing for sufficiently dissolving; 2, accurately weighing paraformaldehyde into a beaker, adding paraformaldehyde into the solution prepared in step 1, heating and stirring with a magnetic stirrer, controlling the temperature tobe 60 DEG C or below until paraformaldehyde is completely dissolved, and adjusting the pH value to 7.0-7.4 with a 10N NaOH solution; and 3, after the pH is adjusted, adding ultrapure water into the beaker by using a measuring cylinder, fixing the volume to a preparation volume, uniformly stirring and mixing, and storing in a dark place at room temperature. The advantages of good detection specificity and sensitivity, low detection cost, high stability, simple operation, high repeatability, and guaranteeing of the reliability of the result are achieved.

The present disclosure relates to use of high-concentration aldehyde-based fixatives to fix tissue samples. Aldehyde concentrations are selected that significantly increase rate of diffusion of the fixative solution into the tissue. When combined in the cold-temperature step of a two-temperature fixation, a substantial improvement in the preservation of post-translationally modified proteins is achieved.

The invention discloses a processing method of ostrich texture simulated leather. The processing method is characterized by comprising the following steps of flatly spreading a delimed and softened pelt on a pin board, wherein a grain side of the pelt is upward, and a flesh side is in contact with wood screws; afterwards, uniformly brushing a pattern fixing agent on a part, which is convex on thepin board, of the pelt, wherein the pattern fixing agent is at least brushed for 1 time; and after the brushing of the pattern fixing agent is finished, standing for at least 5min, and carrying out acid pickling, tanning, after-tanning wet processing and coating operation according to normal operation, thus obtaining an ostrich texture leather finished product. Distances among wood screws on the pin board are 2cm to 6cm; and the heights at which the wood screws protrude the plane of the pin board are 0.5cm to 3cm. The pattern fixing agent is an aldehyde solution with the pH (potential of Hydrogen) of 8.0 to 9.5; and the aldehyde solution is prepared from any one of formaldehyde with a mass friction of 40%, glutaraldehyde with a mass friction of 50%, modified glutaraldehyde with a mass friction of 45%, acetaldehyde with a mass fiction of 60% or furaldehyde with a mass friction of 50%. The delimed and softened pelt is any one of a cattle hide, a buffalo hide, a dzo hide or a yak hide. The method is simple, low in cost, high in operability, and moreover, easy in style change, and is used for producing ostrich skin pattern simulated leather with different characteristics.

The invention provides agilawood compound essential oil for relieving depression and improving sleep and a preparation method thereof. The agilawood compound essential oil for relieving depression and improving sleep is prepared from agilawood essential oil, geranium essential oil, chamomile essential oil, lavender essential oil and a fragrance fixative.The preparation method comprises the specific steps of preparation preparation, evaporation critical point determination, speed calculation, controlled speed adding, redistilling, mixing and purifying, and synchronously mixing; according to the preparation method of the agilawood compound essential oil for relieving depression and improving sleep, a synchronous distillation mode is adopted, various raw materials are added at the same time and evaporated at the same time, the various raw materials are fully mixed in a gaseous form and are synchronously recondensed, and meanwhile, the fragrance fixative is continuously added, The mixing degree of various components of the agilawood compound essential oil can be effectively improved, so that the quality of the agilawood compound essential oil is improved.

The invention discloses stationary liquid applied to frozen sections, a preparation method of the stationary liquid and a method for preparing the frozen sections based on the stationary liquid, and belongs to the technical field of frozen section stationary liquid preparation. According to the invention, the traditional Chinese medicines astragalus membranaceus, poria cocos and codonopsis pilosula are used for fixing tissues for the first time, the formed fixing liquid can be obtained by preparing the traditional Chinese medicine powder by adopting a polyvinyl alcohol solution, and the use of an organic solvent is completely avoided, so that the harm to experimenters and the environment is reduced. Meanwhile, compared with the stationary liquid in the prior art, the stationary liquid disclosed by the invention can obtain the same signal or a signal higher than that of the conventional stationary liquid, so that the sensitivity of a to-be-detected sample is improved to a certain extent, and a clearer guiding significance is provided for clinical diagnosis and treatment.

The invention provides a green prickleyash preservation method which comprises the following steps: pretreatment of raw materials: screening fresh green prickleyash raw materials, removing impuritiesand branches, and preventing green prickleyash oil cells from being crushed; pre-preservation treatment: after picking, placing the green prickleyash in a closed environment, introducing 1-methyl cyclopropene into the environment, conducting closed treatment for 4-6 hours, then placing thyme oil in the closed environment, and continuing closed treatment for 3-4 hours to finish preservation treatment of the green prickleyash, wherein 1 g of thyme oil is placed in each cubic meter of space; and steam enzyme deactivation: uniformly spreading the green prickleyash on a stainless steel net, puttingthe stainless steel net into a tunnel, and introducing steam to quickly reduce the activity of protease. Steam enzyme deactivation is used, the temperature rises quickly, and edible acetic acid, zincacetate, citric acid, a edible salt solution and other color fixatives are not used, so that adverse effects on the flavor of the green prickleyash are avoided; and a liquid nitrogen refrigeration system is adopted for refrigeration, the cooling speed is high, the dry consumption is low, and nutrient loss is small during unfreezing.

The invention discloses an essence for laundry detergent. The essence comprises the following components in percentage by mass: 5-15% of 2,6-dimethyl-7-octylene-2-ol, 5-15% of 3,7-dimethyl octadiene-[1,6]-ol-[3], 5-15% of beta-phenyl ethanol, 0.1-1% of 3,7-dimethyl-3-octanol, 0.01-0.5% of 3,7-dimethyl-2,6-octadiene aldehyde, 1-7% of trans-3,7-dimethyl-2,6-octyl, 1-5% of 3,7-dimethyl-1,6-octadiene-3-alcohol acetate, 1-10% of 2-T-butyl cyclohexanol acetate, 1-7% of 8 (or 9) acetoxy-tricyclo(5.2.1.0)-3-decene, 1-5% of benzyl benzoate, 1-10% of 3-methyl-4-(2,6,6-trimethylcyclohexyl-2-ene)-3-butene-2-one, 1-7% of 1-(1,2,3,4,5,6,7,8A-octahydro-2,3,8,8-tetramethyl-2-naphthyl) ethanone, 1-6% of trans-3,7-dimethyl-2,6-octadiene-1-alcohol acetate, and 50% of 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethyl cyclopenta[g]-2-benzopyran. According to the invention, the essence contains a plurality of fixatives with different fragrances, has rose and lavender fragrances in the first smell, lily and gardenia fragrances in the second smell and elegant lily and lotus fragrances in the last smell, and is rich in flower fragrance, rich in fragrance and elegant in feeling.