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983 results about "Methylparaben" patented technology

Methylparaben, also methyl paraben, one of the parabens, is a preservative with the chemical formula CH₃(C₆H₄(OH)COO). It is the methyl ester of p-hydroxybenzoic acid.

Novel method of producing dronedarone key intermediate

The present invention relates to a preparation method of 4-[3-(2-butyl-amino) propoxy]- benzoic alkyl ester (a compound of formula (1)). The p-hydroxide benzene methyl formate and 1, 3 methylparaben react to prepare compound III under alkaline conditions. Then the products and putrescine dock to synthesize compound I under alkaline conditions. The compound is a key intermediate for preparing drugs of treating arrhythmic diseases, hydrochloride Juenaidalong. Wherein, R represents C1-C4 alkyl; X, X1 and X2 are halogen atoms, such as Cl, Br and I; but X1 and X2 are different from each other.
Owner:BEIJING VENTUREPHARM BIOTECH

Chitosan contraceptive gel and preparation method thereof

The invention relates to a chitosan contraceptive gel and a preparation method thereof. The contraceptive gel consists of 0.5 to 1.5 percent of chitosan, 0.5 to 1.5 percent of carbomer, 0.5 to 3.0 percent of triethanolamine, 10 to 30 percent of ethanol, 5 to 20 percent of propylene glycol, 0.3 to 1.0 percent of benzalkonium chloride, 0.5 to 2.0 percent of glycerin, 0.5 to 2 percent of citric acid, 0.5 to 2 percent of polyethylene glycol 400, 0.3 to 1.0 percent of benzalkonium bromide, 0.1 to 0.5 percent of ethylparaben, 0.1 to 0.5 percent of methylparaben and the balance of purified water. The preparation method comprises the following steps of: spraying the chitosan and the carbomer on the liquid surface of the purified water, standing for a whole night to form a gel substrate, and removing bubbles under vacuum after standing; and then uniformly mixing the triethanolamine, the ethanol, the propylene glycol, the benzalkonium chloride, the glycerin, the citric acid, the polyethylene glycol, the benzalkonium bromide and the ethylparaben, and gradually adding into the gel substrate for uniformly mixing to prepare the chitosan contraceptive gel. The contraceptive gel is used in the vagina of a woman, has the effects of contraception, antibacterium and lubrication, avoids the influences on the vaginal pH, and maintains the normal balance of vaginal microflora; and the contraceptive gel also has the advantages of the antibacterium, inflection prevention, no damage to a genital mucosa, small irritation, low allergy and the like.
Owner:林一文 +1

High-quality collagen mask

The invention discloses a high-quality collagen mask. The high-quality collagen mask is prepared from, by weight, water, glycerin, dipropylene glycol, methylpropanediol, SC glucan, super repair peptide, carnosine, fucogel-1, milk skin conditioner, dipotassium glycyrrhizinate, hydrolyzed collagen, allantoin, preservative, citric acid, methylparaben, sodium hyaluronate, EDTA disodium, PEG-hydrogenated castor oil and essence. The adopted raw materials are free of toxicity, irritation or side effect. The high-quality collagen mask has higher permeability, trophism, repairability, moisture retention property and compatibility and better whitening and wrinkle removing functions than masks available in the market at present, and can improve skin elasticity, shrink pores, remove facial wrinkles, improve dark and oily skin, deeply permeate into skin to provide nutrients and water for skin constantly, and repair aged and damaged cells, so as to realize a long-term skin nourishing effect.
Owner:HEFEI KADIER COSMETIC CO LTD

Antiaging sunscreen cream containing natural plant active ingredients and preparation method thereof

The invention discloses an antiaging sunscreen cream containing natural plant active ingredients. The antiaging sunscreen cream is prepared by using three components including A, B and C, wherein the component A contains 2-8 parts of stearic acid, 1-3 parts of C18 alcohol, 4-8 parts of isopropyl palmitate, 0.5-2 parts of lanolin, 0.1-0.5 part of Tween-60, 0.05-0.25 part of methylparaben and 35-45 parts of deionized water by weight; the component B comprises 0.2-0.8 part of triethanolamine, 6-10 parts of glycerol, 0.5-3 parts of Span-60, 0.2-0.8 part of EDTA (Ethylene Diamine Tetraacetic Acid), 0.5-2 part of azone and 28-35 part of deionized water by weight; and the component C comprises 0.15-0.35 part of vine tea extract, 0.2-0.4 part of licorice extract and 1-3 parts of camellia oleifera seed oil by weight. The antiaging sunscreen cream has a broad-spectrum, stable and strong absorption effect on ultraviolet rays and in particular obtains strong absorbing performance to the ultraviolet rays UVA; meanwhile, the antiaging sunscreen cream also has very good moisturizing, hydrating and antiaging effects on skins.
Owner:HANSHAN NORMAL UNIV

Facial mask with rhus chinensis leaf extract and method for preparing facial mask

The invention provides a facial mask with rhus chinensis leaf extract and a method for preparing the facial mask. The facial mask comprises facial mask base cloth and facial mask essence. The facial mask essence comprises allantoin, methylparaben, EDTA (ethylene diamine tetraacetic acid) disodium, glycerin, betaine, xanthan gum, polyacrylate cross-linked polymers-6, methyl glucitol polyether-10, panthenol, PEG-40 (polyethylene glycol-40) hydrogenated castor oil, beta-glucan, ceramide 3, chitosan oligosaccharide, hyaluronic acid, caprylyl hydroximic acid, polypeptides, the rhus chinensis leaf extract and water. The method for preparing the facial mask includes steps of 1), preparing the rhus chinensis leaf extract by the aid of steps of repeated extraction, micro-filtration and ultra-filtration, reduced-pressure distillation and concentration, spray drying and the like; 2), preparing the facial mask with the rhus chinensis leaf extract. The facial mask and the method have the advantages that a main active component of the facial mask is the natural plant extract, and accordingly obvious tightening, anti-wrinkle, moisturizing and skin whitening effects can be realized by the facial mask; raw materials for the facial mask can come from wide sources, and the method is simple.
Owner:张家界久瑞健康产业发展有限公司

Moisturizing cream and preparation method thereof

The invention discloses a moisturizing cream and a preparation method thereof. The preparation method comprises the steps that glycerinum, beta-glucan, deionized water, methylparaben, EDTA disodium and the like are added into a boiler, heated to 75-85 DEG C and stirred evenly, and heat preservation is conducted for 20 seconds for standby use; butanediol, caprylic/capric triglyceride, dicaprylyl carbonate and the like are added into a fry pan, heated to 75-85 DEG C and stirred evenly, and heat preservation is conducted for standby use; the standby components, butanediol, a hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer and the like are pumped into an emulsifying pot for 3-5 min of homogenizing, and then cooled to 45 DEG C after 20 min of heat-preservation stirring; and a predissolved PEG/PPG-17/6 copolymer, hippophae rhamnoides and the like are added into and mixed with essence evenly, a semi-finished product is obtained, and then a finished product is warehoused after passing a test. The moisturizing cream is rich in natural active ingredients and efficient moisturizing complex extracted from plants, and can deeply permeate into the top of the skin; and meanwhile, a natural moisturizing screen is established for the skin, water and oil are balanced, and the moisturizing cream is a safe, healthy, efficient, natural and pure skin moisturizer specifically used for northerners.
Owner:宁夏艾伊生物工程研发有限公司

Plant anti-oil anti-acne face cream

Plant anti-oil anti-acne face cream is prepared from the following raw materials in parts by weight: deionized water, Alps alpine glacier water, caprylic / capric acid triglyceride, isopropyl myristate, cetearyl alcohol, hydrogenated lecithin, squalane, hamamelis virginiana, centella asiatica, monkey bread tree extract, butylene glycol, cetearyl glucoside, sodium shale oil sulfonate, glyceryl stearate, purslane extract liquid, chamomile, roe sauce extract, rose extract liquid, orchid extract liquid, brown alga cell extract, asparagopsis armata extract, collagen peptide, methyl glucose sesquistearate, polydimethylsiloxane, xanthan gum, allantoin, sodium hyaluronate, bisabolol, squalane and dunaliella salina extract, azone, vitamin E acetate, date palm extract, methylparaben, tourmaline, 2-methyl-4-isothiazoline-3-one / ethyl hexyl glycerin.
Owner:王赫

Chitosan derivative based clean makeup-removing wet tissue with effects of bacterial inhibition and moisture preservation and preparation method of chitosan derivative based clean makeup-removing wet tissue

The invention discloses chitosan derivative based clean makeup-removing wet tissue with effects of bacterial inhibition and moisture preservation. The chitosan derivative based clean makeup-removing wet tissue with the effects of bacterial inhibition and moisture preservation is prepared from raw materials in percentage by weight as follows: 2%-5% of chitosan derivatives, 5%-10% of PEG-8 caprylic/capric glycerides, 3%-8% of butanediol, 2%-5% of glycerin, 1%-3% of trehalose, 1%-5% of olive oil PEG-6 esters, 0.5%-3% of a skin conditioner, 0.15%-0.3% of phenoxyethanol, 0.15%-0.3% of ethylhexylglycerin, 0.1%-0.2% of methylparaben, 0.05%-0.2% of sodium hyaluronate, 0.01%-0.05% of essence and the balance of deionized water. According to the chitosan derivative based clean makeup-removing wet tissue with the effects of bacterial inhibition and moisture preservation and a preparation method, the makeup-removing wet tissue prepared with the preparation method is low in production cost, high in stability and good in cleansing power and realizes deep cleaning, besides, the makeup-removing wet tissue further has the effects of bacterial inhibition and moisture preservation, the facial skin after application of the makeup-removing wet tissue is smooth and tender, and makeup residues on the facial skin are removed.
Owner:湖北立天生物工程有限公司
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