101 results about "Methyl glycol" patented technology

The invention provides a method for preparing 1, 2- methyl glycol through glycerin hydrogenation. The glycerin, diluted glycerin or side product coarse glycerin of biodiesel mixes with hydrogen gas or hydrogen gas- containing gas, and reacts under catalyst action to produce 1, 2- methyl glycol. The conversion rate is high.

The invention provides an eye plaster which comprises chrysanthemum flower 1-6g, root of herbaceous peony 1-6g, tea 1-5g, pearl powder 0. 5-4g, dahurian angelica root 0. 5-3g, yellow corktree bark 0. 5-4g, Chinese date 0. 5-5g, safflower 0. 5-4g, Ligusticum wallichii 1-6g, abalone shell 0. 5-4g, licorice root 0. 5-4g, borax 0. 5-3g, borneol 0. 5-3g, menthol 0. 5-3g, methyl glycol 2-8g and glycerol 2-8g.

An impurity removing and desalting method for 1, 3-propanediol zymotic fluid relates to a 1, 3-propanediol zymotic fluid, which provides the An impurity removing and desalting method for 1, 3-propanediol zymotic fluid. Micro filtering impurity removing is that the 1, 3-propanediol zymotic fluid with germ is preprocessed by a filtering bag and enters a ceramics film device micro for micro filtering impurity removing. The germ body and protein macromolecular matter are removed from zymotic fluid to get the zymotic filter fluid of the 1, 3-propanediol. The salt removing by electrodialysis is that zymotic filter fluid containing the 1, 3-propanediol is put into an electrodialysis device to remove salt and completes when filtrate conductance is reduced to 2000 us. Therefore, the electrodialysis operation is stopped. The filter fluid enters the following technics for condensation and purification. The invention has a bigger film flux, a good treating effect and light ion exchanging film pollution. The salt removing by electrodialysis has low energy consumption and good treating effect. The conductance of material liquid can be completely reduced to 2000 us to satisfy techincs demand of following concentration and distillation. The loss rate of the 1, 3-propanediol is low with little environment pollution.

The invention relates to an industrial synthesis technique of DL-naproxen, which uses 2-propinonyl-6-methoxynaphthalene is reacted with neopentyl glycol, ethylene alcohol, 1, 3-methyl glycol or 1, 2-methyl glycol via ketol reaction to give ketone I, then processes a-bromo-reaction which is subjected to rearrangement to open ring, at last processes alkali hydrolytic reaction and acidification reaction to obtain DL-naproxen. The industrial synthesis technique of DL-naproxen has simple operation, high yield and low cost, which is fit for commercial production.

The invention provides an improved method for synthesizing Ioversol, belonging to technology preparing non-ionic X contrast agent. The invention employs 5- hydroxyethyl amido- N, N' - (2,3-dihydroxy propyl)- 2, 4, 6- triiodide-1, 3- benezene diformamide and 2- chlorethanol to proceed nitrogen alkylation reaction in mixing solution of caustic soda and acetonitrile, neutralizing, desalting and desalting reacting solution, re-crystallizing with methyl glycol single dimethyl ether, and getting Ioversol. The invention is characterized by soft reacting condition, short reaction time, and stable quality, low cost and suitable for industrialized production.

This invention relates to a method for separating and purifying 1,3-dihydroxypropane from microbial fermentation liquor, comprising: after the sterilization and dehydration of fermentation liquor, add in 1-pentanol or isoamyl alcohol, n-butanol and n-hexanol, then remove the sediment in the fermentation liquor by filtration or settlement followed by washing; add in appropriate amount of glycerol or 1,4-butylene glycol to the supernatant to recover 1-pentanol or isoamyl alcohol, n-butanol and n-hexanol, by decompression or normal pressure distillation, so as to produce high-purity 1,3-dihydroxypropane, with more than 95% recovering rate. This invention is characterized of simple separation process, mature technique, low separation cost, and little additional introduced agent with easy recovery. Besides, the crystallization sediment in the fermentation liquor can be efficiently separated, which overcomes the problems of foaming, agglomerating and pipe clogging during distillation, so as to realize continuous operation.

The invention discloses a flame-proof polyytrimethylene terephthalate alcohol and preparing method, which is characterized by the following: incorporating phosphoric system combustion inhibitor element; counting with phosphorus content; making up 0. 3%-1% polyytrimethylene terephthalate alcohol; preparing methyl glycol solution of phosphate ester; adding into terephthalic acid; proceeding esterification and polycondensation reaction with 1, 3 methyl glycol; getting the product. This product possesses simple course and good property, which fibre intensity is high.

The invention relates to a paradimethy-laminobenzaldehyde thiosemicarbazone as tyrosinase restrainer, in particular to the paradimethy-laminobenzaldehyde thiosemicarbazone applied in beauty cosmetics. The invention uses paradimethy-laminobenzaldehyde thiosemicarbazone with high-effect restrain function on the activity of tyrosinase as whitening agent to prepare beauty cosmetics, and provides a relative beauty cosmetics and a preparation. The invention uses paradimethy-laminobenzaldehyde thiosemicarbazone as whitening agent of de-crease beauty cosmetics solution which contains sea fish collagen peptide, paradimethy-laminobenzaldehyde thiosemicarbazone, alcohol, glycerin, methyl glycol, plant essence, conservative and water, that dissolves sea fish collagen peptide into water to obtain solution A, dissolves conservative and paradimethy-laminobenzaldehyde thiosemicarbazone into alcohol to obtain solution B, adds glycerin and methyl glycol into solution B to obtain solution C, mixes the solutions A and C, and adds water to form solution D, and adds plant essence into the solution D.

Disclosed is a fresh-keeping agent for wet noodles, which is prepared from the constituents of ethanol (ml), methyl glycol (ml) and sodium chloride by the ratio of 1 : 0.7-1.1 : 1.2-1.5. The amount of the fresh-keeping agent is 7-8% of weight of the flour.

The present invention provides 1, 3-propylene glycol preparing process, which includes the contact of dialkyl malonate with hydrogenating catalyst CuZnaAlbOc, where, a is 0.04-3, b is 0.04-3, and c is the atom number for reaching the electric neutrality of the compound; and reaction at temperature of 100-220 deg.c and pressure of 0.1-10.0 MPa, and in the space velocity of ester of 0.1-1/hr and hydrogen/ester molar ratio of 100-700 to 1. The process has high 1, 3-propylene glycol selectivity, high reactor utilizing efficiency, and low cost.

The invention relates to a cigarette flavoring solvent capable of improving the flavor addition efficiency and the application thereof, and the invention is characterized in that: the solvent comprises by volume percentage: glycerin 5-50 %, methyl glycol 5-50 %, glycerin triacetate 10-80 % and alcohol 10-80 %, the solvent is used as the cigarette flavoring solvent and is prepared into the flavoring solution which is charged into the tobacco of the cigarette to improve the cigarette flavoring addition effect. The invention has the advantages that the solvent can effectively improve the transferring rate of the additive flavor into the cigarette mainstream smoke and particle phase, thereby improving the flavor addition efficiency with no abnormal smell and no changing of the cigarette flavor style; through even mixing of the solvent with flavoring agents, a flavor solution is prepared with good effect in the flavor addition of the cigarette, meanwhile, the invention has simple process, low cost and can be used as a common solvent for the flavor agents addition of cigarettes.

The invention relates to a hair dye comprising the following constituents (by weight parts): octadecanol 8.5-9.5%, white oil 26# 3.8-4.2%, Peregal O 3.8-4.2%, polyquaternium-22 1.42-1.58%, oleinic acid 4.7-5.3%, isopropanol 4.7-5.3%, disodium ethylenediamine tetraacetate 0.14-0.16%, anhydrous sodium sulfite 0.28-0.32%, sodium ascorbate 0.47-0.53%, methyl glycol 4.7-5.3%, balsamine and dyer's wade mixture 4.25%, alkalinizing agent 11.40-12.60%, and balancing deionized water.

The invention discloses a making method of 1, 3-propylene glycol through hydrogenating 3-hydroxy propanal, which comprises the following steps: adopting load-typed non-crystal alloy as catalyst; using two-segment paralleling fixing bid to hydrogenate continuously under 20-60 deg.c for one-segment and 50-90 deg.c for two-segment; setting the condensing density of 3-hydroxy propanal to 2.0-40.0% with air speed at 0.1-5.0h-1; making the hydrogen pressure at 0.5-10.0Mpa and air speed at 100-2000h-1.

The invention provides a lymphatic static fat-expelling weight-reducing externally applied cream which is prepared from the following raw materials (by weight ratio), caffeine 1-4 parts, ginkgo leaf extract 3-8 parts, nicotinamide 1-3 parts, allantoin 1-3 parts, methyl glycol 5-12 parts.

The invention discloses a liquid composition of immune inhibiting agent ciromos, which consists of soluble solution system with ciromos and pre-emulsifying condensed liquid system, wherein the ciromos can dissolve in the methyl glycol, PEG, surface activator and plant oil.

Disclosed is a liquid preparation for treating anaphylactic rhinitis, wherein the constituents include (by weight percent) purple perilla oil 1.5-4.2%, methyl glycol 5-10%, Tween80 0.25-1.5%, Cremophor RH 40 5-15%, borneol 1-2%, lauryl alcohol 1-2%, isopropyl inosine 0.05-0.2%, uridylic acid 0.10-0.5%, sodium metabisulfite 0.1%, Ethylparabenum 0.2% and balancing distilled water to 100%.

The invention discloses a preparing method of restructuring strain in biological technical domain, which comprises the following steps: adopting PCR technique; cloning dhaT gene from pneumonic klebsiella DSM 2026; constructing bacillus coli expressing carrier pET-dhaT with dhaT gene; transferring into bacillus coli DH5 alpha; proceeding plasmid reproduction; extracting recombinant plasmid; transferring to bacillus coli BL21(DE3); getting recombination gene engineering strain E. coli-pET-dhaT to express 1, 3-propanediol oxidoreductase (PDOR). This strain can get stable PDOR under the condition of non-antibiotic selective pressure.

The invention discloses a face-washing mask employing mineral salts as the principal raw materials, wherein the constituents include mineral salts 30-70%, polyvinyl aliphatic alcohol ether1-3%, carboxymethyl cellulose 2-8%, methyl glycol 8-20%, ethanol 3-10%, perfume compound 0.1-1% and balancing deionized water.

The invention discloses a making method of polyterephthalic acid propanediol ester, which is reacted by terephthalic acid and 1, 3-methyl glycol, wherein the catalyst is salt generated by tin (II) compound and organic diacid with general formula I or II or corresponding acid anhydride; the tin (II) compound is one of stannous oxide, stannous chloride, stannous bromide, stannous iodide, stannous sulfate, stannous carbonate, stannous hydroxide, stannous caprylate and stannous acetate; n in the formula I is 0-16; R1 and R2 is H, halogen (Cl, Br, I) or alkyl with carbon atom number at 1-6; two carboxyls in the formula II display at adjacent position, interposition or contraposition with other replaced base L on the other positions on the phenyl ring; L is Cl, Br, I, nitro or alkyl with carbon atom number at 1-6.