3012 results about "Ethyl cellulose" patented technology

A stabilized solid controlled release dosage form having a coating derived from an aqueous dispersion of ethylcellulose is obtained by overcoating a substrate including a therapeutically active with an aqueous dispersion of ethylcellulose and then curing the coated substrate at a temperature and relative humidity elevated to a suitable level above ambient conditions until the coated dosage form attains a stabilized dissolution profile substantially unaffected by exposure to storage conditions of elevated temperature and/or elevated relative humidity.

Compositions comprising a glycosaminoglycan (e.g., a hyaluronan, hyaluronic acid, hyaluronate, sodium hyaluronate, dermatan sulfate, karatan sulfate, chondroitin 6-sulfate, heparin, etc.) in combination with at least one component selected from; i) polyglycols (e.g., polyethylene glycol), ii) long chain hydroxy polyanionic polysaccharides (e.g., dextran, sodium alginate, alginic acid, propylene glycol alginate, carboxymethyl cellulose and carboxyethyl cellulose, hydroxyl ethyl starch, hydroxyl propyl methyl cellulose, hydroxy propyl ethyl cellulose, hydroxy propyl cellulose, methyl cellulose, polylysine, polyhistidine, polyhydroxy proline, poly ornithine, polyvinyl pyrolidone, polyvinyl alcohol, chitosan, etc.) and iii) long chain Nitrogen containing polymers (e.g., Polylysine, Polyvinylpyrrolidone, and polyvinyl alcohol). The invention also includes methods for using such compositions (e.g., as substance delivery materials, tissue fillers or bulking agents, as moistening or hydrating agents, etc.)

The present invention relates to zero-order sustained release solid dosage forms suitable for administration of a wide range of therapeutically active medicaments, especially those that are water-soluble, and to a process of making same. The solid dosage form comprises (a) a matrix core comprising ethylcellulose and the active agent and (b) a hydrophobic polymer coating encasing the entire matrix core.

An extended release dosage composition of pharmaceutically active substances that have a water contact angle (θ) such that cos θ is between +0.9848 and −0.9848 presented as a matrix tablet containing the said pharmaceutically active substances, with/without suitable pharmaceutical excipients in intimate mixture with two groups of intelligent polymers having opposing wettability characteristics, one demonstrating a stronger tendency towards hydrophobicity and the other a stronger tendency towards hydrophilicity, the polymer combination being between the ratios of 1:50 and 50:1 amounts effective to control the release of said pharmaceutically active substances in a mathematically predictable manner, wherein the polymer demonstrating a stronger tendency towards hydrophobicity is not less than 5% wt/wt and preferably between 5-70% wt/wt of the final formulation composition. The intelligent polymers being ethylcellulose (EC) as a more strongly hydrophobic and hydroxyethylcellulose (HEC) and/or hydroxypropyl methylcellulose (HPMC) as more strongly hydrophilic (the ratio of HEC to HPMC being between 1:100 and 100:1). The matrix tablet is optionally coated with an enteric coat, 0-5%-15% wt/wt to prevent the initial burst effect seen in such systems and to impart gastrointestinal tract (GIT) “stealth” characteristics especially in the presence of food.

A probiotic composition essentially comprises 15 to 20 wt % of milk powder, 25 to 30 wt % of corn starch, 8 to 15 wt % of modified starch (capsul), 10 to 15 wt % of ethylcellulose, 5 to 15 wt % of bacterial broth, and 10 to 15 wt % of talc. The probiotic composition is microencapsulated to form a plurality of microencapsule coated with an acid-resistant enteric coating for improving the enteric acid-resistance, the probiotic survival rate, the antimicrobial property, the stability, the moisture-proof property, and the mobility of the probiotic composition preventing from coagulation in a moist environment and for being used as an additive applied to livestock feed.

The present patent application relates to an agent for the coloring of keratin fibers based on oxidative dye precursors and/or direct-penetrating dyes, that contains a combination of at least one cationic hydroxyethyl cellulose and at least one acrylate copolymer in a suitable cosmetic carrier as well as a multicomponent-kit for the coloring of keratin fibers.

A sustained-release preparation which can release a highly water-soluble medicinally active ingredient over a long time and a process for the production thereof are provided. The preparation has a sustained-releasing layer formed by heating and melting a layer composed of both an aqueous ethylcellulose latex containing a plasticizer and a wax to miscibilize them.

The invention discloses a slowly-released compound acidifier for poultry and livestock feed, a preparation method thereof and feed containing the same. The compound acidifier comprises the following compositions in part by weight: 30 to 80 parts of complex organic acid, 15 to 50 parts of supplementary materials and 5 to 20 parts of coating agents. The complex organic acid is citric acid, fumaric acid, malic acid, lactic acid, linoleic acid, crataegolic acid, ursolic acid, chlorogenic acid, glycyrrhizic acid and oleanolic acid, and the supplementary materials are silicon dioxide, hydroxypropyl methylcellulose and ethyl cellulose. The acidifier is scientifically proportioned, has strong efficiency and is long-acting and slow-releasing, nutrients in the feed are free from being damaged, the acidifier has good fluidity and is easy to be uniformly mixed with the feed, the digestive absorption of nutrients can be promoted, the conversion rate of the feed can be improved, the productivity of poultry and livestock can be improved, the time for domestic animals for sale can be effectively shortened, the health of gastrointestinal mucosa of the animals can be protected, the immunologic function of the animals can be strengthened, and diseases can be prevented.

The invention discloses a compounding and a preparation method for lead-free electronic slurry used for a solar silicon photocell; according to the mass percentage, the slurry is obtained by preparing 70 to 75 percent of aluminium powders, 20 to 25 percent of organic adhesive, 1 to 5 percent of inorganic glass powders and 1 to 5 percent of additives; the aluminium powder is ball-shaped aluminium powder with the surface covered by an aluminium nitride protection layer, with the purity not less than 99.9 percent and the average grain size of 2 to 6 microns; simultaneously, organic adhesives consisting of ethyl cellulose, resin, hexadecanol, diethyleneglycol monomethyl ether, diethyleneglycol monobutyl ether, terpineol and n-butyl alcohol are added into the aluminium powder; the inorganic glass powder is silicon dioxide, boracic acid, alumina, antimony oxide and zirconia; the additive consists of Span and pump oil. The product prepared by the method of the invention has no dust generation or aluminium peeling phenomenon and achieves the requirement of no lead and environmental protection.

Disclosed is an electron emission source composition for a field emission display device including 1 to 20% by weight of carbon nano tubes; glass frit; an organic binder resin comprising ethyl cellulose and acrylate resin and/or acryl resin; and an organic solvent, wherein the glass frit is present in an amount of 1 to 500 parts by weight with respect to 100 parts by weight of the carbon nano tubes.

The invention discloses a water-insoluble medicine sustained-release pellet, a sustained-release orally disintegrating tablet thereof and a preparation method thereof. The water-insoluble medicine sustained-release pellet comprises a hollow pellet core, a medicine layer, an insulation layer and a sustained-release layer, wherein the sustained-release layer comprises the following ingredients: 54 to 88 percent of sustained-release materials, 2 to 30 percent of antitackiness agents and 1 to 30 percent of pore-foaming agents, wherein the percentage is the mass percentage in the sustained-release layer, wherein the sustained-release materials are one kind or several kinds of materials selected from ethyl acrylate and methyl methacrylate copolymers, polyvinyl acetate and ethyl cellulose. Through regulating the coating combinations and filling auxiliary materials to be pressed into orally disintegrating tablets, the medicine can be slowly released for more than 8 to 13 hours, so the stable blood medicine concentration can be maintained, the side effect is reduced, the medicine taking times can be reduced, and the medicine taking is convenient. The invention conforms to zero-grade release, has the advantages of high final accumulated medicine release amount, high efficacy, strong selectivity, good mouth feeling, simple production steps and high efficiency, and can be applied to large-scale production.

The invention relates to an essence microcapsule and a preparation method and an application thereof. The essence microcapsule comprises a capsule core, and a slow release layer and a rapid release layer coating the capsule core in order, the capsule core comprises the material of a first fragrance substance, the slow release layer comprises at least one of Arabic gum, hydroxypropyl methyl cellulose, chitosan, polyvinyl alcohol, polyethylene glycol, ethyl cellulose, konjac glucomannan, gelatin, and pullulan polysaccharide, the rapid release layer comprises a second fragrance substance, and theflavors of the second fragrance substance and the first fragrance substance are constant. The fragrance lasting time of the essence microcapsule is long, the fragrance intensity is strong, and the fragrance explosiveness is good.

The present invention belongs to the field of plastic products, and particularly relates to a biodegradable plastic packaging bag which is characterized by comprising the following components by weight: 5-15 parts of ethyl cellulose, 10-20 parts of polyethylene, 15-30 parts of modified starch, 15-30 parts of corn starch, 15-30 parts of sweet potato starch, 20-40 parts of polylactic acid, 2-10 parts of calcium carbonate powder, 1-5 parts of a lubricant, 1-5 parts of a plasticizer, 1-3 parts of a toughening agent, 1-10 parts of a degradation accelerator, 1-5 parts of polyvinyl alcohol, 2-5parts of chitosan, 1-5 parts of a compatibilizing agent and 2-6 parts of polycaprolactone. The biodegradable plastic packaging bag begins to thin, lose in weight, reduce in strength, then gradually splits into fragments after being exposed to the environment for two months, when these fragments are buried in garbage or soil, the degradation effect is very obvious; by addition of the plasticizer and the calcium carbonate powder, the added ingredients may enhance the tensile strength of the plastic packing tape, reduce the air and moisture permeability, and maintain the original characteristics of the plastic packaging bag.

A liquid crystal device having a plurality of pixel electrodes for transmitting light, a first panel having an activation portion for selectively activating the plurality of pixel electrodes, an orientation layer formed on the activation portion, a light shielding pattern formed on the orientation layer, a second panel having a second orientation layer, a liquid crystal formed between the first and second panels, a polarizing plate or a color filter and a protective film on at least one of the aforementioned surfaces wherein the protective layer includes a cellulose ester selected from the group consisting of cellulose acetate, cellulose formate, cellulose propionate, cellulose butyrate, ethyl cellulose, methyl cellulose and benzyl cellulose having an inherent viscosity of from about 1.0 to less than 2.0 dl/g.

The invention relates to a preparation method of electrode pulp, which comprises the step that binding agent, conductive agent and dissolvent are mixed and agitated evenly. The invention is characterized in that the conductive agent is mixed with the binding agent, electrode active material and the dissolvent in the form of conductive agent dispersion, the conductive agent dispersion includes the conductive agent, conducting dispersing medium, dispersant and stabilizer, the dispersant is chosen from one or more of polyacrylamide, polyvinylpyrrolidone, hydroxy ethyl cellulose, polyacrylic ester, dodecyl polyethylene oxide ester, polycaprolactone and alkyl acid and the stabilizer is chosen from on or more of polyvinylidene fluoride, polyfluortetraethylene, polyacrylamide, polyvinylpyrrolidone, methylol cellulose, droxyethylcellulose and polyacrylic ester. The battery which is prepared by utilizing the method provided by the invention has the advantages that the battery capacity is high, the discharging platform is stable, the circulation is good, and the internal resistance change is little; and simultaneously, the invention overcomes the disadvantages that the using quantity of organic solvent is large, the cost is high and the pollution to the environment is large when the pulp is prepared in the prior art.

This invention relates to controlled release fertilizer, to be specific, it is a control efficiency fertilizer and its manufacturing technique. The control efficiency fertilizer is composed by capsule and fertilizer core, the core is nitrogen compound fertilizer with nitrification inhibitor, the capsule is acrylic resin or compound of acrylic resin and ethyl cellulose. The core is produced by blending comminution granulation; fluidized bed spray painting is used on capsule technique. Acrylic resin or compound of acrylic resin and ethyl cellulose is dissolved in ethanol solution. Inorganic membrane amendment and plasticizer are added to the solution, then fluidized state capsule surface is sprayed coated to form smoothing, continuous, uniform capsule. It can control nutrition release and transformation of fertilizer nitrogen efficiently, greatly evaluate the availability of azophoska, and the manufacturing cost is below high molecular polymer capsule compounding fertilizer which has equal fertilizer efficiency.

The invention relates to microcapsules and a preparation method thereof, particularly to tea polyphenol liposoluble microcapsules and a preparation method thereof, wherein a core material of the tea polyphenol liposoluble microcapsules comprises tea polyphenol and reduced glutathione, a mass ratio of the tea polyphenol to the reduced glutathione is 95-99:1-5, a wall material of the tea polyphenol liposoluble microcapsules is one or a plurality of materials selected from arabic gum, dextrin, corn syrup, ethyl cellulose, methylcellulose, and hydroxypropyl methylcellulose phthalate, and a mass weight ratio of the core material to the wall material is 1:1-4. The tea polyphenol liposoluble microcapsule preparation method comprises the following steps: respectively preparing a core material emulsion liquid and a wall material solution, adding the core material emulsion liquid to the wall material solution, carrying out high speed stirring, homogenizing, and carrying out spray drying to obtain the tea polyphenol liposoluble microcapsules. The tea polyphenol liposoluble microcapsules have characteristics of fine average particle size and slow tea polyphenol release, such that anti-oxidation and absorption utilization efficiency of the tea polyphenol are substantially improved.

The invention discloses a disinfection sterilization medical ultrasonic coupling medium with the bactericidal function and used in the ultrasonic detection and treatment of skin and cavitary mucosa and a preparation method of the coupling medium, wherein, the ultrasonic coupling medium comprises propylene glycol, de-ionized water and one viscosity modifier of the hydroxy ethyl cellulose, carbomer and hydroxy propyl cellulose. The coupling medium further comprises a fungicide of 0.05 to 0.15 percent and the constituents of the fungicide are any one of polyhexamethylene biguanide, benzalkonium chloride, benzalkonium bromide, chlorhexidine acetate, trichlorobenzene phenoxy diphenyl ether and nanometer silver or any combination of the olyhexamethylene biguanide, the benzalkonium chloride, the benzalkonium bromide, the chlorhexidine acetate, the trichlorobenzene phenoxy diphenyl etherand, and the nanometer silver; the preparation method used for preparing the ultrasonic coupling medium is as follows: dispersing the hydroxy ethyl cellulose in the propylene glycol, stirring and dispersing the hydroxy ethyl cellulose by adding enough water, heating to 75 to 80 DEG C, preserving the heat for 30 minutes to cool the hydroxy ethyl cellulose and the propylene glycol to 45 DEG C, adding the fungicide to stir and cool the fungicide, the hydroxy ethyl cellulose and the propylene glycol to obtain the filled coupling medium. Tests show that the products of the coupling medium have fast and long sterilization effect and meet the requirements of various related standards.