92 results about "Alkalinizing agent" patented technology

An aqueous solution of local anesthetic is instilled into the urinary bladder in sufficient concentration with the addition of an alkalinizing agent such as sodium bicarbonate to elevate the intra-vesical pH to approximately 8.0. The combination is left in situ in the bladder for at least fifteen minutes to allow time for absorption of the base form of the local anesthetic. This method provides safe and effective topical anesthesia to allow pain-free cystoscopic biopsy and cautery of bladder lesions such as bladder cancer, and provides a means to treat inflammatory conditions of the bladder such as chronic interstitial cystitis and acute bacterial cystitis.

The present invention relates to a composition for dyeing keratin fibres, comprising: one or more oxidation dyes; one or more basifying agents; one or more non-oxyalkylenated fatty substances that are liquid at room temperature in a content of less than or equal to 20% by weight relative to the total weight of the composition; one or more oxidizing agents; one or more oxyethylenated fatty alcohols with a number of oxyethylene units of greater than or equal to 10; one or more oxyethylenated fatty alcohols with a number of oxyethylene units of less than 10; one or more non-oxyethylenated fatty alcohols that are solid at room temperature; and one or more cationic polymers. The present invention also relates to a process for dyeing keratin fibres using such a composition, and also to a kit for preparing the said composition.

The invention discloses a method for raising thermal denaturation temperature of hide and hide powder through THP salt-nano clay combination tannage. The method comprises: adding softened hide or hide powder and water in a mass ratio of (0.5-1):1 to a reactor; adding a certain amount of salt and formic acid; adding THP salt and stirring for 3 to 5 hours; adding nano clay and stirring for 3 to 5 hours; extracting alkali till the pH of bath is between 5.0 and 6.0, continuing to stir for 2 hours and then standing the obtained product overnight; and stirring the obtained product for 30 minutes next day and then performing washing. The method can effectively raise the thermal denaturation temperature of hide collagen up to over 115 DEG C through the THP salt-nano clay combination tannage. Due to the specific structure of the nano clay added in the method, during alkali extraction in the later stage of tanning, tanning liquor is automatically alkalized and mitigated in effect, thereby helping to stabilize product quality, and the consumption of alkalization agent can be reduced. Meanwhile, the THP salt and the nano clay in the method containing no heavy metal salts are environment-friendly materials, and the tanning process is a clean leather-making technique.

The invention belongs to the field of nano material synthesis and application, and in particular relates to a method for synthesizing nano zinc oxide based on solvent heat. According to the invention, zinc acetate dehydrate is used as a raw material, sodium hydroxide is used as an alkalinizing agent, and polyvinylpyrrolidone is used as an additive. The method comprises the following synthesis steps of: firstly, adding ethanol in a hydrothermal kettle until the filling degree is 0.6; adding the additive polyvinylpyrrolidone, the raw material zinc acetate dehydrate and the alkalinizing agent sodium hydroxide in the solution, and stirring for 20-40 minutes; sealing the hydrothermal kettle and then placing the sealed hydrothermal kettle in an oven, heating to 80-160 DEG C and maintaining the temperature to be constant for 0.5-3 hours; and finally, naturally cooling, centrifuging the obtained product, washing the product with deionized water and ethanol, and drying to obtain the nano zinc oxide products with different morphologies.

The invention relates to a preparation method of salt-resistant carboxymethyl starch. A mixed solvent of ethanol and isopropyl alcohol serves as a reaction medium, and multi-step modification of cassava starch is performed in slurry taking the mixed solvent as a medium. The method comprises the following specific steps: swelling the starch to prepare starch milk; adding a surfactant and performing modification such as alkalization and etherification by an 'acid pretreatment process'; and adding a crosslinking agent for a micro-crosslinking reaction. In the method provided by the invention, the surfactant is added as a penetrant, the reagent molecules are promoted to penetrate and spread into the starch particles, and the alkalization efficiency and etherification efficiency are improved; the generation of side reactions can be reduced by adding an etherifying agent before an alkalizer, thus the alkalization and etherification are carried out at the same time, and more thorough etherification reaction is guaranteed; finally, the starch is subjected to micro-crosslinking so as to improve the structure viscosity and enhance the salt resistance; the product viscosity 4% exceeds 40,000, the substitution degree is over 1.0, the salt-viscosity ratio goes beyond 0.5, and the product can be applied to multiple technical fields instead of CMC.

The invention discloses a preparation method of a sedative hypnotic pharmaceutical preparation. The preparation method includes the steps of dissolving active ingredient dexzopiclone or zopiclone in acidifier-containing acidic solution to give drug-containing acidic solution, and then performing wet granulation with the obtained drug-containing acidic solution, basifier and adjuvant. The acidifier is hydrochloric acid, and the basifier is sodium hydroxide. One or more of organic weak acid, acid salt and conjugate base of organic weak acid are added before or during the addition of the basifier. The invention also discloses the sedative hypnotic pharmaceutical preparation prepared by the method. The inventive preparation method has no potential safety hazard, simple and convenient operation, low pollution and loss, low cost, and good process controllability. The obtained pharmaceutical preparation has excellent dissolution and stability, and lower related substance content.

The invention relates to a method for extracting high-purity calcium oxide from carbide slag. The method is characterized by comprising the following steps: drying the carbide slag; carrying out high temperature roasting pretreatment; preparing carbide slag emulsion; carrying out centrifugal separation to produce a calcium chloride leaching liquid; acidifying the leaching liquid; adding a precipitator ammonium oxalate in the acidified solution; dropwise adding a basifier in the solution to neutralize hydrogen ions in the solution, and obtaining the precipitated ammonium oxalate by centrifugal separation; re-drying the separated ammonium oxalate particles; and roasting the dried ammonium oxalate particles at a high temperature to obtain the calcium oxide product with the purity of 98-99%. The invention provides the method for extracting the calcium oxide from the carbide slag by using the precipitator ammonium oxalate. The method is scientific and reasonable, and can meet industrial production requirement so that the extraction efficiency of the calcium oxide product is high, the extraction time is short, the cost is low, and the purity is up to 98-99%.

A method of synthesizing ferrate, which includes the steps of: (a) weighing and obtaining iron salts, activating agents, alkalinizing agents and oxidizing agents solution; (b) mixing uniformly the iron salts, the activating agents and the alkalinizing agents, heating to 30˜398° C. and maintaining for 1 min˜60 min to obtain a mixture; (c) adding the oxidizing agents solution to the mixture with an adding time of less than 10 minutes, then obtaining a precursor; and (d) natural cooling the precursor, then mixing the precursor with water and stirring evenly to obtain a final product of ferrate, wherein a volume ratio of the precursor and the water is 1:1˜5. The method involves low power consumption, low temperature, low explosion risk, non-complicated steps and procedures, short synthetic time and high ferrate conversion efficiency. The method produces ferrate of high yield and good stability, and is suitable for producing ferrate composite pharmaceuticals in industrialized mass production.

The invention relates to a biological preparation comprising orthosilicic and silicic acid, a primary (“constant/first”) osmolyte choline and a weak alkalinizing agent without free hydroxyl groups and to a method for preparing the preparation, comprising: i) hydrolyzing a silicon comprising choline solution thereby forming a choline stabilized orthosilicic acid and oligomers solution; ii) alkalizing the choline orthosilicic acid and oligomers solution by adding a weak alkalizing agent without hydroxyl groups; and iii) optionally adding a divalent trace element and/or secondary osmolyte, to biological preparation obtainable and its uses.

The invention relates to the field of pharmacy, and especially related to a cefmenoxime hydrochloride compound and a synthesizing method thereof. The cefmenoxime hydrochloride compound has a formula shown below, and is prepared with a method comprising the steps that: (1) a cefoperazone precursor 7-ATCA.HCl and AE active ester are subjected to a condensation reaction under the existence of CH2Cl2and an alkalizing agent; and the obtained product is subjected to extraction, decolorization, press-filtration, neutralization, rejection filtration, and drying, such that cefmenoxime acid CMX-H is prepared; (2) the cefmenoxime acid is completely dissolved by using sodium carbonate; the obtained product is subjected to decolorization, press-filtration, neutralization, decolorization, filtration, crystallization, washing, and drying, such that a cefmenoxime hydrochloride half-finished product is prepared; a jet mill is started; and the material is crushed and is filled in aluminum bottles. According to the invention, cefmenoxime acid is prepared into crystals, such that the product purity is greatly improved, and the product quality is ensured. Also, the method provided by the invention is advantaged in small three-waste volume, simple preparation process, and low cost. Therefore, the method is suitable for the industrialized productions of our nation.

The present invention relates to an oxidative hair colouring and bleaching composition comprising an oxidizing agent, a source of carbonate ions, and an alkalising agent, wherein the composition comprises at least 4% by weight of hydrogen peroxide or a source of carbonate ions, utilised at pH 9.5 and below and wherein said composition is free of a source of radical scavengers which result in improved lift and lightening for blonde shades, excellent dye deposition and colour and improved grey coverage. Moreover, the compositions of the present invention also exhibit low odour and deliver a high level of lift and lightening equal to the currently utilised ammonia/peroxide systems, whilst reducing the concentration of peroxide and reducing the hair fibre damage.

The present disclosure relates to a formulation and a process for the removal of inorganic impurities from waste water. The formulation consists of a blend of at least one alkali metal aluminate, at least one cationic organic coagulant and optionally at least one alkalinating agent in pre-determined proportions. The process for decontamination using the afore-stated formulation includes steps such as admixing, settling, microfiltration and optionally acidification, ultrafiltration and reverse osmosis. The disclosure further provides an apparatus for the removal of inorganic impurities from waste water.

The invention discloses a meloxicam tablet for a pet as well as a preparation method and application thereof. The meloxicam tablet for the pet is prepared from the following components: meloxicam, a basifier, a diluent, a disintegrating agent, a fluidizer, a lubricating agent and a proper amount of an adhesive, wherein the weight ratio of the meloxicam is 0.5 to 1.25 percent, and the weight ratioof the basifier is 5 to 15 percent; the meloxicam is micronized meloxicam prepared by superfine grinding; the particle size of the micronized meloxicam is not more than 75 [mu]m. The preparation method of the meloxicam tablet comprises the following steps: performing superfine grinding on the meloxicam, then uniformly mixing the disintegrating agent, the diluent and the basifier according to an equivalent increasing method to obtain a mixture, adding the adhesive into the mixture, then performing granulation to obtain wet particles, drying the wet particles, adding the fluidizer and the lubricating agent, and tabletting the mixture, thus obtaining the meloxicam tablet. The meloxicam tablet is used for preventing and treating animal joint diseases. The meloxicam tablet for the pet is high in dissolution degree, and is favorable for playing the therapeutic effect.