5 results about "Cetylpyridinium" patented technology

For minoxidil in a minoxidil-containing formulation to be efficiently absorbed through the scalp, it is important that the formulation blends well with and spreads across the surface of the scalp. In other words, the object of the present invention is to provide a minoxidil-containing topical pharmaceutical composition that blends well with the skin. [Solution] (a) 5-15 w / v% minoxidil, (b) at least one selected from the group consisting of cetylpyridinium and its salts, and benzethonium and its salts, and (c) 8-30 w / v% water, (d) lower alcohol, and (e) 10-30 w / v% polyhydric alcohol. A topical pharmaceutical composition characterized in that the polyhydric alcohol is at least one selected from the group consisting of 1,3-butylene glycol, dipropylene glycol, propylene glycol, glycerin, and polyethylene glycol.

A composition, in particular for the prophylaxis and / or treatment of caries, gingivitis, halitosis and / or arteriosclerosis, comprises N-cetylpyridinium chloride, at least one flavonoid, at least one polymer, in particular a homopolymer comprising at least one monomer having a polar functional group, in particular polylysine, and optionally chlorhexidine, wherein the weight ratio of chlorhexidine to N-cetylpyridinium chloride is between 0 and 7, in particular between 0.01 and 6, especially between 0.1 and 5, more especially between 0.2 and 4, for example between 0.4 and 3.2.

This invention relates to the field of biomedical materials technology, and discloses a cerium-doped mesoporous bioactive glass and its preparation method. The cerium-doped mesoporous bioactive glass comprises a SiO₂-CaO-P₂O₅ glass network and cerium element doped in the glass network; the cerium-doped mesoporous bioactive glass has an amorphous mesoporous structure. This cerium-doped mesoporous bioactive glass is prepared by employing a sol-gel method combined with a water-in-oil self-assembly strategy. Using hexadecylpyridine bromide as a template agent, urea as a slow-release alkali source, and triethanolamine as a reaction regulator, a stable emulsion is constructed in an aqueous system, followed by the sequential introduction of silicon, phosphorus, calcium, and cerium sources. This successfully achieves in-situ uniform doping of cerium element in the mesoporous bioactive glass network framework. Furthermore, this method requires no subsequent modification steps, and a multifunctional material with an amorphous mesoporous structure, Ce³⁺ / Ce⁴⁺ mixed valence state, and controllable CeO₂ nanocrystal distribution can be obtained in one step.

The application belongs to the technical field of hydrogenation catalysis nanomaterials, and particularly relates to a preparation method of a carbon-nitrogen layer modified platinum / alumina composite hydrogenation catalyst. The application uniformly mixes a chloroplatinic acid aqueous solution, camphor sulfonic acid and chlorohexadecylpyridine, reduces Pt ions into superfine Pt nanoparticles by ultraviolet lamp irradiation, then uniformly disperses alumina beads, and obtains the carbon-nitrogen layer modified Pt / Al2O3 composite hydrogenation catalyst by high-temperature calcination. The catalyst has good catalytic hydrogenation performance and stability. The preparation method provided by the application is simple and easy to operate.