5 results about "Ethyl cellulose" patented technology

The present invention provides an aqueous porcelain imitating coating material, which comprises the following components, by weight, 20-30 parts of a water-soluble polyvinyl alcohol emulsion, 15-25 parts of titanium dioxide powder, 15-25 parts of calcium carbonate, 0.5-0.7 part of methyl cellulose, 0.3-0.5 part of ethyl cellulose, and 65-75 parts of distilled water. The aqueous porcelain imitating coating material of the present invention has the following technical effects that: the coating material belongs to a high gloss coating material, no brick seam exists after dyeing with the coating material, the whole effect is good, and the coating material has the same characteristics as the characteristics of water resistance, alkali resistance, scrub resistance, and the like of the porcelain tile.

The invention belongs to the field of pharmaceutical preparations and particularly discloses a sustained-release capsule containing tacrolimus solid dispersion and a preparation method thereof. The sustained-release capsule contains 1 part by weight of tacrolimus, 0.6-6.0 parts by weight of polyvidone K30 and ethyl cellulose, lactose, excipient and lubricating agent. The sustained-release capsule containing tacrolimus solid dispersion is simple in preparation process, easy to reproduce and suitable for industrial popularization.

The invention discloses a high-toughness anti-cracking rubber material for a sealing ring. The high-toughness anti-cracking rubber material for the sealing ring is prepared by using the following raw materials in parts by weight: 100 to 120 parts of ethylene propylene diene monomer rubber, 5 to 10 parts of methyl vinyl silicone rubber, 60 to 80 parts of white carbon black, 2 to 4 parts of zinc oxide, 0.15 to 0.25 part of dibenzoyl peroxide, 1.5 to 2.5 parts of sulfur S80, 1.5 to 2.5 parts of anti-aging agent MB, 0.3 to 0.5 part of accelerator TMTD, 1 to 2 parts of ethyl cellulose, 2 to 4 parts of methyltrimethoxysilane, 0.5 to 1 part of tetrabutyl titanate, 0.15 to 0.25 part of titanate coupling agent NDZ-401, 6 to 8 parts of nano-graphite powder, 4 to 6 parts of castor oil and 0.5 to 1 part of glycidyl methacrylate. The rubber material disclosed by the invention has good wear resistance and long-lasting friction-reducing performance, simultaneously has high toughness and good anti-cracking performance, is long in service life, is good in sealing performance and is suitable for being used as a sealing ring material.

The invention relates to a pharmaceutical composition for treating oral ulcer. The pharmaceutical composition is prepared from the following components by weight: 13 to 16 parts of VitB, 18 to 22 parts of VitE, 17 to 21 parts of a VitAD pill and 135 to 165 parts of mannatide. The pharmaceutical composition is a tablet coated by a layer of coating vitamin C. The coating vitamin C is prepared from, by weight, 13 to 18 parts of vitamin C and 2.5 to 4.2 parts of ethyl cellulose. The pharmaceutical composition has a reasonable component formula, is simple to prepare and comparable to a paste agent, a powder, a buccal tablet and a plaster membrane of a same kind for treatment of oral ulcer and has the advantages of easy administration, convenience in carrying, fast action, a good curative effect and wide applicability to oral ulcer resulting from a variety of causes.

The invention relates to aspirin sustained-release tablets and a preparation method thereof. The sustained-release tablets include main drug-aspirin and ingredients; the ingredients include starch, polyacrylic resin II, hydroxypropyl methylcellulose, ethyl cellulose and a 3% hydroxypropyl methylcellulose alcoholic solution; and the starch, the polyacrylic resin II, the hydroxypropyl methylcellulose and the ethyl cellulose in the ingredients are smashed and sieved through a sieve with 80 meshes for later use. The preparation method of the 3% hydroxypropyl methylcellulose alcoholic solution in the ingredients includes taking 135 parts of tartaric acid to add to 360 parts of purified water, performing heating to about 70 DEG C to stir to complete dissolution, then adding 36 parts of polysorbate 80, and performing stirring to complete dissolution so as to obtain a solution A; taking 54 parts of the hydroxypropyl methylcellulose, while adding, performing stirring to uniformly dispersing thehydroxypropyl methylcellulose in 1152 parts of ethanol, and obtaining a solution B; and uniformly mixing the solutions A and B, and performing standing for 8-72 h at 18-26 DEG C. The sustained-release tablets have the advantages of being sustainably stable in release rate, free from pollution and almost insoluble in stomach.