186 results about "Fixation agent" patented technology

The invention provides a method for forming an immobilized agent gradient within a 3-dimensional porous scaffold. A 3-dimensional scaffold formed from a biocompatible material is provided. The surface of the scaffold and/ or the agent is activated so as to allow binding of the agent to the scaffold. The activated scaffold is contacted with a solution containing the agent. Contact with the solution is maintained for a sufficient period of time to allow diffusion of the solution through a portion of the scaffold, thereby forming a desired gradient of the agent through the 3-dimensional scaffold.

The invention discloses biomass molding fuels. The fuels are granulated and molded after biomass material particles and a fuel additive are mixed, wherein, based on the weight of the biomass material particles, the fuel additive comprises the following components in percentages by weight: 0.1-5% of grease, 0.1-2% of sulfur fixation agent and 0.1-0.5% of combustion improver. The biomass molding fuel obtained in the invention is a high grade clean fuel suitable for use in industrial boilers and can be directly burned in various BMF (Biomass molding fuel) boilers.

A system and method are provided for deactivation and disposal of a pharmaceutical dosage form. The system and method employ an oxidant and an immobilizing agent placed in a container. The pharmaceutical dosage form is placed into the container, and water is added to the container. A rapid chemical deactivation of the active ingredient or ingredients in the pharmaceutical then occurs by a chemical oxidation process. Upon contact with the water, the immobilizing agent swells or expands in volume to form a gel or slurry, binding the other components in the container within the gel or slurry, where they remain after disposal. The system can be in the form of a kit, or can be scaled up for use by municipalities or institutions.

A hydrogel for use in oral care. The hydrogel is ion beam cross-linked, the hydrogel is adapted to be disposed in the oral cavity and may be adapted to provide a denture fixative or may be loaded with a whitening agent for use in whitening one or more teeth and disposed on or adjacent one or more teeth and the whitening agent is slow-released to whiten the one or more teeth. Other loading materials may include materials for treatment of alveolitis or malodor, inter alia. The present invention is a new hydrophilic oral and dental cohesive hydrogel sheet designed to securely grip and cushion prosthetic devices in the human mouth with the further ability to slow release antimicrobial or other orally desirable agents. Additionally, the invention also provides a method of making an orally cohesive device that: 1) is easily adapted and applied to a removable dental prosthesis; 2) bonds well to alveolar ridge/palatal mucosa and denture acrylic materials; and 3) releases cleanly, with no tacky or thixotropic residue when the prosthesis is removed. The cohesive hydrogel gel device is a hydrogel-forming polymer mixed with water, optionally surrounding an internal scrim, and uses an electron-beam energy source to cause cross-linking. The method does not need any chemical additive to affect the cross-linking. Furthermore the beam energy can be adjusted to optimize the cohesive properties of either side of the device, as well as to compensate for addition of orally active agents, if any are chosen. The hydrogel sheets are pre-cut to fit most sizes of maxillary and mandibular full denture prostheses, but can be easily trimmed with a scissors by the end user for the ideal custom fit of any full or partial denture, in either arch.

The invention discloses an acid reaction resistant chinlon fixer. Currently, most chinlon fixer products on the market are not resistant to acid; during a fixation treatment, when the fixer encounters strong acid or concentrated organic acid, a large sum of white precipitates will be produced; and fixer spot is easily generated in the fixation process, leading to generation of inferior-quality products or even waste products. The acid reaction resistant chinlon fixer provided by the invention is prepared by the following method comprising the following steps: subjecting a phenolic compound and two aromatic sulfonic acid compounds to a condensation reaction with formaldehyde in the presence of a complex catalyst; and then adding epichlorohydrin and a modifier to the above reaction system for modification; and finally, adjusting pH value of the modified multielement copolymer aromatic sulfonic acid formaldehyde condensation substance to 2-4 with strong acid or concentrated acid, so as to obtain the acid reaction resistant chinlon fixer. The acid reaction resistant chinlon fixer provided by the invention has acid resistance obviously better than that of a general commercial chinlon fixer, and solves the problem of hard fixation and poor washing fastness of chinlon fabric dyed by acid dyeing.

Cosmetic composition for the oxidative treatment of hair or skin, prepared by mixing of at least two components, in which dehydroascorbic acid or a dehydroascorbic acid salt or a dehydroascorbic acid derivative is generated from ascorbic acid, ascorbic acid derivative and ascorbic acid salt prior to application by an enzyme that catalyzes the enzymatical oxidation of said of ascorbic acid as well as a process for carrying out the oxidative treatment of keratin, particularly for the oxidative post-treatment of reduced hair in the process of permanent deformation of hair using said composition.

The invention relates to a preparation method of a hydrophilic cationic formaldehyde-free fixing agent. The method is characterized by comprising the following steps of: I, dropwise adding 20-70 parts by weight of a quaternizing reagent into 30-60 parts by weight of olefin alkyl amine under the ice-water bath condition, and then stirring; II, adding 60-180 parts by weight of alkylene alcohol polyethenoxy ether, 200-600 parts by weight of alkyl olefin alkyl ammonium chloride, 0.04-0.5 part by weight of a metal ion screening agent and 200-500 parts by weight of water in sequence, and stirring; III, raising the temperature to 60-90 DEG C, dropwise adding 8-20 parts by weight of a water-soluble initiator, preserving heat and reacting for a certain period of time; and IV, after the reaction, regulating the pH value to 5-8 with a caustic soda liquid to obtain the hydrophilic cationic formaldehyde-free fixing agent. Compared with the conventional cationic formaldehyde-free fixing agent, the fixing agent has the advantages of higher hydrophilicity and applicability to fixing for cotton fiber active dyeing.

A method is described to assay for protein interactions in living cells, e.g. by the introduction of two heterologous conjugates into the cell. The method uses the measurement of cellular distribution of a detectable component (e.g. a GFP-labeled˜fluorescent probe) to indicate the presence or absence of an interaction between that component and a second component of interest. The method uses the knowledge that certain components can be stimulated to redistribute within the cell to defined locations. Inducible redistribution systems make it possible to determine if specific interactions occur between components. Inducible systems are described where it is demonstrated that the redistribution stimuli are essentially “null”, in that they affect no other system in the cell during the assay period, other than the component whose redistribution can be induced. Also described is an extraction buffer which is useful in high throughput screening for drugs which affect the intracellular distribution of intracellular components. The extraction buffer comprises a cellular fixation agent and cellular permeabilisation agent. Optimizing the composition of the extraction buffer and its application to various cell types is described.

The invention provides a method for preparing biomass moulded coal by using biomass and inferior smokeless pulverized coal as raw materials. The biomass moulded coal is prepared by uniformly mixing the biomass, the inferior smokeless pulverized coal and additives (a sulfur fixation agent, a biomass binder, an oxidant and a waterproofing agent), and performing low-pressure compression moulding by a wet method, wherein the sulfur fixation agent is calcined lime CaO; the biomass binder is light yellow dope prepared by treating bagasse by using 1 to 2 percent sodium hydroxide solution; the oxidant is potassium permanganate; and the waterproofing agent is tar or a binder. The biomass moulded coal comprises following raw materials in part by mass: 40 to 65 parts of inferior smokeless pulverized coal, 25 to 55 parts of biomass and 5 to 10 parts of additive. The biomass moulded coal has the advantages of low cost, low ignition point, high burn-off rate and integrative desulfurization and water proofing performance, and has great significance of energy conservation and environmental protection.

The invention discloses a method to make low modulus high extensibility high strength of bond organic silicon sealed material. The components are poly-organic radical siloxane 100 portions, filling material 50-200 portions, extending agent 1-10 portions, cross linking fixation agent 2-10 portions, activator 0.05-2 portions and silane coupling agent 0.1-5 portions. The sealing material has excellent weathering aging endurance and temperature endurance, good cementing and good water endurance.

The invention relates to a method for preparing a leather fixing agent, in particular to a dendriform cationic leather fixing agent and a preparation method thereof. To overcome the defects of low activity, high consumption and easily caused grain leather existing in the prior art, the invention adopts a technical scheme that: the method for preparing the dendriform cationic leather fixing agent comprises the following steps: (1) mixing organic amine and acrylic ester, adding a reaction solvent, stirring to react, vacuumizing, distilling by rotating, and removing the solvent and excessive acrylic ester to prepare dendriform PAMAM; and (2) mixing the dendriform PAMAM prepared in the step (1) with a cationic etherifying agent, adding a solvent, adding an extracting agent after reaction, andextracting for multiple times to prepare graft modified dendriform cationic leather fixing agent. Compared with the prior art, the method has the advantages of reducing the hydrolysis effect of dye, improving fastness of leather to wet rubbing, reducing the consumption of the dye, not influencing the hand feeling of the leather, and making the fixing agent biologically degraded easily.

The invention discloses a fabric formaldehyde-free fixing agent. The fixing agent comprises the following raw materials in parts by mass: 10-15 parts of poly dimethyl diallyl ammonium chloride, 15-18 parts of 2-hydroxypropyltrimethyl ammonium chloride chitosan, 25-34 parts of water, 20-25 parts of ethanol and 5-10 parts of fatty alcohol polyoxyethylene ether. The fixing agent disclosed by the invention has an excellent fixation effect, and can effectively improve colour fastness of fabric dyes and wet rubbing fastness in the processes of dyeing and printing. The fabric treated by the fabric formaldehyde-free fixing agent does not discolor.

The invention relates to a method for making high-grade sheep skin soft upper leather from inferior sheep skin, which comprises: dying, polishing leather, spraying sarcenet oil, mending, smoothing, grounding using grounding agent, brushing and scraping using multi-membrane agent several times, plucking skin, beating soft, scraping skin, Spraying surface slurry, spraying fixation agent, spraying hand feeling agent, ironing etc. Grounding agent is formulated by cation compound resin, non-ionic wax, cation color cream and water. Multi-membrane agent is formulated by non-ionic caseose-free color cream, compound resin, small molecule acroleic acid, swelling resin etc. Surface slurry is formulated by color cream, non-ionic wax, compound resin, silicon casein, flexible acroleic acid, paint slurry etc. fixation agent is formulated by water and aqueous gloss oil. Grounding agent is used mechanically and manually in the invention. Multi-membrane agent ,surface slurry and fixation agent have low cost , little pollution and can make high-grade sheep skin soft upper leather from inferior sheep skin.

A sand-fixation lignin chemical is prepared from the waste digestion liquid generated in chemical pulping step through reaction on aldehyde compound, adding less cross-linking agent and condensating reaction on urea. It is applied by spraying it on ground surface for preserving water, improving soil and increasing the survival rate of vegetation.

The invention provides a method for controlling the hydrargyrum exhaustion of boiler smoke. The method comprises: ejecting ozone into the low-temperature section of smoke channel of boiler whose temperature ranges from 110-150Deg. C; oxygenizing the nonvalent Hg which is not dissolved in water into bivalent Hg; washing the smoke in the washing tower to dissolve the bivalent Hg in water; adding H2S fixation agent into solution to generate HgS deposition from bivalent Hg. Compared to the Hg exhaustion removing efficiency in present fire coal power station which is lower than 50-50%, the total Hg removing efficiency of said invention can be over 80%.

Relating to methods able to conduct fast histochemistry and other analyses in plant tissues, the invention specifically relates to an embedding medium and a direct frozen section method. The embedding medium is composed of polyvinyl alcohol, polyethylene glycol, carboxymethylcellulose sodium, glycerol, formaldehyde, collagen, plant gel, and deionized water. According to the frozen section method, a plant material is not fixed, and a sample subjected to histochemical staining and other treatments or a fresh tissue is wrapped on a sample table directly to perform frozen section. The method solves the problem that in the microscopic observation of phytohistochemistry, immunolocalization, in-situ hybridization and other studies, a target chemical substance is easy to dissolve in a fixation agent, and is impossible to be fixed first and then sectioned, or the target chemical substance dissolves in an alcohol substance and is impossible to be dehydrated by ethanol.

The invention relates to a digital printing process for a polyester-cotton fabric. The digital printing process comprises the following process steps: (1) sizing a polyester-cotton fabric; (2) digital printing: carrying out spray printing according to a pattern requirement of rip printing software, generating cyan by virtue of color card generation software (C:100, M:100, Y:100 and K:100), and carrying out unreeling and sequential digital printing on the fabric reeled in the step (1), wherein a printer comprises a first spray head and a second spray head, the first spray head is used for spraying and printing disperse dye ink, the second spray head is used for spraying and printing active dye ink, and a printing condition is that bidirectional four channels are adopted; (3) high-temperature baking: baking the digital-printed fabric in the step (2) at 180-190 DEG C for 40-50 seconds; (4) cotton-cloth steaming; (5) a washing and soaping process: carrying out open-width washing on the fabric processed in the step (4); and (6) shaping and drying: adding a softening agent and a color fixation agent into the fabric processed in the step (5) for shaping, and drying at a temperature of 150-160 DEG C, wherein the speed of a drying vehicle is 40m/min-50m/min.

The invention relates to the technical field of fixing agent, and provides cationic organic silicon modified poly(diallyldimethylammonium chloride) fixing agent and a preparation method thereof. The preparation method comprises the following main steps: uniformly mixing dimethyl diallyl ammonium chloride, an organic silicon monomer, chelator and deionized water; and introducing nitrogen gas to expel oxygen, then adding initiator, and performing free radical polymerization to obtain the cationic organic silicon modified poly(diallyldimethylammonium chloride) fixing agent. The fixing agent prepared through the method provided by the invention is used for finishing after dyeing, the dry and wet rubbing fastness (especially wet rubbing fastness) of anionic dye for dyeing can be enhanced, the shade is not influenced, and the feeling of textile can be kept soft; and the fixing agent prepared through the preparation method is free of formaldehyde, non-toxic and environment-friendly, and is novel dyeing and printing auxiliary agent.

The invention discloses a dyeing and finishing process for modal fabric. The process comprises the procedures of pretreatment, pre-setting, modification treatment, dyeing, soaping, fixation, after-finishing, drying, sizing, calendering and rolling. According to the invention, pretreatment is carried out by adopting ultrasonic wave, and a step of modification treatment is added; in the dyeing procedure, a base substituent SA is used, use of a large quantity of alkaline substances and inorganic salt is avoided, nature dye is adopted, and colophony powder is added as a fixing agent, so that the color fixing effect is enhanced, environmental pollution is avoided, and the requirement of green environmental protection is met; furthermore, montmorillonoid is adopted to carry out modification treatment and flame retardant treatment on the fabric, so that the flame retardancy of the fabric is high. According to the invention, a yellowing-resisting reagent is used in the procedures of pre-setting, sizing and after-finishing, so that the final fabric cannot become yellow easily.

The invention discloses a method for preparing zeolite phosphorus fixation agent from coal ash. The method comprises the following steps: synthesizing P zeolite by coal ash; impregnating the P zeolite by adopting a calcium salt solution, a ferric salt solution or a ferrite salt solution, wherein the concentration of a calcium ion in the calcium salt solution, a ferric ion of the ferric salt solution and a ferrous ion of the ferrite salt solution is 0.05-0.1mol/L; washing the impregnated P zeolite, and drying, thereby obtaining the zeolite phosphorus fixation agent. The invention also provides the zeolite phosphorus fixation agent prepared from coal ash by the method. The zeolite phosphorus fixation agent from coal ash, which is prepared by the invention, has an excellent phosphorus removing effect.

This invention discloses a method for producing color-fixation agent of aqueous polyurethane-modified acrylic resin. The raw materials comprise: hydroxyl-terminated polybutadiene 20-30, hydroxyl organic siloxane 50-70, HDI trimer 20-30, TDI 70-80, trihydroxyethyl melamine 25-30, hydroxyethyl methylacrylate 22-38, N-methyl pyrrolidone 70-80, blocking agent 19-25, acrylic acid mixed monomer 100-150, and initiator 0.5-1. The aqueous polyurethane-modified acrylic resin is produced by pre-polymerization of polyurethane, blocking, emulsification, and polymerization. The aqueous polyurethane-modified acrylic resin can be used as a finishing agent for fabrics, especially a color-fixation agent for fabrics. The fabrics treated have good dry and wet friction fastness, and soft touch.