48 results about "Ethyl methyl cellulose" patented technology

A composition for controlled delivery of at least one active substance into an aqueous medium by erosion at a preprogrammed rate of at least one surface of the composition, comprising a matrix comprising the active substance, the matrix being erodible in the aqueous medium in which the composition is to be used, and a coating having at least one opening exposing at least one surface of said matrix, the coating comprising a first cellulose derivative which has thermoplastic properties and which is substantially insoluble in the aqueous medium in which the composition is to be used, and at least one of a second cellulose derivative which is soluble or dispersible in water, a plasticizer, and a filler. The coating is a coating which crumbles and / or erodes upon exposure to the aqueous medium such as a body fluid. The first cellulose derivative may be, e.g., ethylcellulose, cellulose acetate, cellulose propionate or cellulose nitrate, and the second cellulose derivative may be, e.g. methylcellulose, carboxymethylcellulose or salts thereof, cellulose acetate phthalate, microcrystalline cellulose, ethylhydroxyethylcellulose, ethylmethylcellulose, hydroxyethylcellulose, hydroxyethylmethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, hydroxymethylcellulose or hydroxymethylpropylcellulose.

The invention relates to an oral medicinal formulation of moxifloxacin and its preparation method, which comprises Moxifloxacin or its salt and / or its hydrate, and at least one film forming material for preparing intermediate particles of the preparation selected from hydroxy propyl methyl cellulose, hydroxy ethyl methyl cellulose, cellulose methyl, hydroxy propyl cellulose, hydroxy ethyl cellulose, sodium carboxymethyl cellulose, polyacrylic resins, polyethylene glycol, polyvinyl pyrrolidon-vinyl acetate copolymer, polyvinyl alcohol-polyethylene glycol grafted copolymer, carbopol, gelatine, poloxamer and polyvinyl pyrrolidon. The invention also discloses the process for preparing the pharmaceutical preparation.

The invention relates to the field of pharmaceutical preparations, and particularly discloses a palbociclib pharmaceutical composition and a method for preparing the same. The palbociclib pharmaceutical composition comprises, by weight, 20%-30% of palbociclib, 30%-40% of pregelatinized starch, 20%-30% of lactitol, 3%-5% of starch sodium glycollate, 4%-6% of hydroxyethyl methyl celluloses, 3%-5% ofhydroxyethyl celluloses and 1%-3% of citric acid fatty glyceride. The palbociclib pharmaceutical composition and the method have the advantages that excellent dissolution effects can be realized by the palbociclib pharmaceutical composition, the contents of related substances can be obviously reduced, the stability can be obviously enhanced, and clinical medicines can be advantageously safely used and can be advantageously stored for a long term; the particle sizes of raw auxiliary materials are controlled, accordingly, the palbociclib pharmaceutical composition is good in mixing property andflowability as discovered via experiments, and capsules can be directly filled with the palbociclib pharmaceutical composition by means of mixing.

The invention discloses a medicine for treating allergic rhinitis, which comprises 0.04%-0.08% mometasone furoate, 0.5%-0.8% glycerin, 1.5%-2.0% sesame oil, 0.1%-0.5% chloride Sodium, 0.5-1.5% mixture of carboxypropylcellulose, hydroxyethylmethylcellulose and microcrystalline cellulose, 2%-3% mixture of Tween 80 and lecithin, 0.05-0.1% peppermint oil, Appropriate amount of sodium citrate buffer, add water for injection to 100%. Experiments show that the medicament of the present invention can effectively treat allergic rhinitis and effectively reduce the incidence of adverse reactions.

The invention discloses a concrete adhesive reducer and its preparation process and application method. Wherein, the concrete glue reducer includes the following components in parts by weight: 35-50 parts of organic alcohol amine compounds; 1-5 parts of anhydrous sodium sulfate; 2-10 parts of sodium thiosulfate; 0.1-3 parts of sodium gluconate 1-5 parts of thickener; 3-10 parts of polyethylene glycol ether; 55-70 parts of water; organic alcohol amine compounds include at least one of triethanolamine and triisopropanolamine; thickener includes yellow At least one of raw gum, polyacrylamide, and hydroxyethyl methylcellulose ether. Concrete reducer can be used in the mixing process of concrete. It has no pungent smell and has the advantages of environmental protection. When added to concrete, it can reduce the amount of cement used and improve the strength of concrete.

The invention discloses a preparation method of high-strength thermal insulation mortar, and belongs to the technical field of building material preparation. The preparation method comprises the following steps: S1, mixing Portland cement, fly ash, limestone powder, polystyrene particles, bentonite, a thickening agent, heavy calcium carbonate powder, a tackifier and carboxyethyl methyl cellulose in parts by weight, and uniformly stirring to obtain slurry; S2, adding lauryl sodium sulfate into the slurry while stirring, stirring for 10 to 15min, and standing for 30 to 60min; and S3, adding calcium fluoride, a styrene-maleic anhydride copolymer or an organic silicon-polyurethane copolymer, sodium carbonate and hydrochloric acid on the basis of the step S2, and performing uniform stirring with a stirrer so as to obtain the high-strength thermal insulation mortar. The high-strength thermal insulation mortar can improve the compressive strength and reduce the dry apparent density, the heatconductivity coefficient and the volume water absorption rate.

The present composition is capable of forming a particle film and comprises: (a) less than 99.65% by weight of at least one particle; (b) at least one volumizing agent selected from the group consisting of: (i) cellulose selected from the group consisting of ethyl hydroxy ethyl cellulose, hydroxy ethyl cellulose, hydroxy propyl cellulose, hydroxy ethyl methyl cellulose, hydroxy propyl methyl cellulose, methyl cellulose, ethyl cellulose, and ethyl methyl cellulose and present in an amount greater than 0.35% by weight; and (ii) non-cellulosic component or cellulose other than said cellulose (i) present in an amount of at least 0.05% by weight; and optionally (c) at least one spreader.The composition may be used to form agricultural films.