8 results about "Hydroxyethyl Urea" patented technology

The invention relates to the technical field of glass ceramics, in particular to a silicon dioxide-containing glass ceramic wafer substrate and a preparation method thereof. The preparation method comprises the following steps: weighing aluminum oxide, hydroxyethyl urea, chromium dioxide, lithium oxide, magnesium oxide, titanium dioxide, a clarifying agent, a toughening agent and silicon dioxide; preparing an aqueous solution from hydroxyethyl urea, and putting the powder, a clarifying agent, a toughening agent and the aqueous solution into a ball milling tank to obtain slurry; carrying out vacuum defoaming, tape casting, drying, glue removal heat treatment, glass melting, rolling and annealing treatment to obtain a glass plate; and polishing, ultrasonically cleaning and drying the glass plate to obtain the wafer substrate. According to the preparation method, hydroxyethyl urea and chromium dioxide are combined under a specific controlled heat treatment system, so that the functions of a conventional dispersing agent are exceeded, a unique toughening phase existing in a grain boundary is generated through in-situ reaction, uniform formation of a superfine nanocrystalline structure is realized synergistically, and thus the fracture toughness and the surface flatness of the material are synchronously and remarkably improved.

This invention relates to a modified long-acting sustained-release coating agent for topical liquid formulations, its preparation method, and its application, belonging to the field of pharmaceutical preparations. The modified long-acting sustained-release coating agent for topical liquid formulations comprises a carrier and a topical liquid formulation in a mass ratio of 1:1 to 3:2. The carrier includes PVA, glycerin, liquid paraffin, β-hydroxyethyl urea, glyceryl stearate, PEG stearate, and purified water. The topical liquid formulation includes one or more of the following: tincture, liniment, solution, lotion, ointment, oil, and rinse. This invention's long-acting sustained-release coating agent is a universal coating agent, safe to use, non-irritating, and has no incompatibility with topical liquid formulations. It facilitates film formation, has a short film-forming time, and produces a flexible film that is not easily detached.

A peroxide stabilizer for use in whitening compositions may comprise a primary amide stabilizer, such as hydroxyethyl urea, in solution with hydrogen peroxide. In comparison with carbamide, while having a lesser peroxide sequestration, hydroxyethyl urea is 2-3 times more soluble and therefore can provide a composition with greater stability while not sacrificing whitening power.

The invention relates to a method for improving the performance of a reverse osmosis membrane by using hydroxyethyl urea, which comprises the following steps of: pretreating the membrane, preparing a hydroxyethyl urea solution, and performing modification treatment (solution impregnation and ultrasonic assistance) to post-treatment. By accurately controlling the solution concentration, the dipping time, the temperature, ultrasonic auxiliary parameters and the like in the hydroxyethylurea modification process, the comprehensive improvement of the hydrophilicity, the anti-pollution performance and the stability of the reverse osmosis membrane is realized, and the method is suitable for industrial production and has very high practicability.

The invention relates to the technical field of water treatment membranes, discloses an anti-pollution reverse osmosis membrane with a high-strength bonding interface and a preparation method of the anti-pollution reverse osmosis membrane, and solves the technical problems that a PVA anti-pollution coating on the surface of an existing cross-linked polyamide-based reverse osmosis membrane is poor in bonding force and easy to peel off. The reverse osmosis membrane sequentially comprises a porous supporting layer, a cross-linked polyamide selective separation layer, a hydroxyethyl urea interface enhancement layer and a PVA-based anti-pollution functional layer from bottom to top, hydroxyethylurea molecules and cross-linked polyamide form multi-site hydrogen bonds through secondary amide groups to achieve anchoring, a dense hydrogen bond network is formed through hydroxyl and PVA, a molecular bridge is constructed to improve the interface bonding force, and the preparation method comprises the steps of cross-linked polyamide-based membrane preparation, hydroxyethylurea interface enhancement treatment, PVA-based coating coating and cross-linking curing. According to the invention, the interface bonding force of the PVA coating and the substrate is improved by 100%-500%, the body structure of the cross-linked polyamide is not damaged, the desalination performance of the membrane is stable, the pollution resistance and the interface stability are obviously improved, and the method is suitable for large-scale production and has strong universality.

The application discloses a kind of Bose factor shampoo and preparation method thereof, wherein Bose factor shampoo includes the following components: water 60-80 parts, surfactant component 15-40 parts, thickening stabilizer 1-8 parts, functional ingredient component 5-20 parts, wherein, the functional ingredient component includes: tea extract 1-5 parts, hydrolyzed silk 0.1-1 part, malt oligosaccharide glucoside 0.5-2 parts, hydroxyethyl urea 0.01-0.1 part, hydroxypropyl tetrahydro pyran triol 0.1-1 part, the surfactant component includes sodium laureth sulfate, cocamide MEA, sodium lauroamphoacetate, sodium lauroylsarcosinate, sodium cocamidopropylate, cocamidopropyl betaine, the application realizes multiple care effect on hair by scientific compounding and synergistic effect of specific component, excellent technical effect is obtained in cleaning power, mildness, nourishing repair, enhanced elasticity and oil control relief, with remarkable creativity and industrial application value.

This invention discloses a super moisturizing face cream and its preparation method. The face cream is composed of deionized water, allantoin, glycerin, badger oil, vitamin E oil, olive oil emulsifying wax, p-hydroxyacetophenone, cabbage extract, 1,2-hexanediol, hyaluronic acid, glycine, glyceryl glucoside, hydroxyethyl urea, ethylhexylglycerin, citric acid, sodium polyacrylate, and fragrance in a specific ratio. Badger oil works synergistically with glycerin and hyaluronic acid to provide deep moisturization; cabbage extract is prepared using a freeze-thaw-press method and is rich in natural moisturizing factors. During preparation, the aqueous and oil phases are prepared separately, emulsified at high temperature, then cooled before adding preservatives and active ingredients, and finally thickened and allowed to mature. This face cream has excellent moisturizing properties, a good skin feel, and skin repair effects, and is particularly suitable for dry and very dry skin.

The present invention relates to a hydrogel patch for nail care, wherein the composition of the hydrogel patch according to the present invention is characterized by combination of the main ingredients of hydroxyethyl urea and resacetophenone and is superior to previous products in terms of the cuticle, surface roughness, surface gloss, moisture content, blood circulation, and nail appearance improvement effects, and also improves the convenience of use.