7525 results about "Isopropylene glycol" patented technology

The present invention provides a dissolvable medical sealing device (3, 4; 6, 7; 9) for closing a wound in vessel. A sealing device (3, 4, 6, 7, 9) according to the invention is made of a material that dissolves by means of physical processes, rather than by means of chemical or biological processes. Such a sealing device (3, 4; 6, 7; 9) can be made of polyethylene glycol, polypropylene glycol, copolymers containing ethylene glycol and propylene glycol, polyvinyl alcohol or polyvinyl pyrolidone, or any combinations thereof.

A lyophilization process which comprises dissolving a material in one or more solvents for said material to form a solution; forcing said material at least partially out of solution by combining the solution and a non-solvent for the material, which non-solvent is miscible with the solvent or solvents used and wherein said non-solvent is volatilizable under freeze-drying conditions. In addition, for hydrophobic and/or lipophilic materials, the anti-solvent can be omitted, and the solution of the material in the solvent can be subjected directly to freeze drying. The lyophilizates can then be reconstituted with typical aqueous diluent in the case of hydrophilic materials. Hydrophobic and or lipophilic materials can be initially reconstituted with propylene glycol and/or polyethyleneglycol to form a high concentration solution therein and this is further diluted for use with a diluent of Intralipid, plasma, serum, or even whole blood.

The invention relates to stable pharmaceutical or cosmetic foam compositions containing certain active agents, having unique therapeutic properties and methods of treatment using such compositions. The foamable composition includes at least one solvent comprising polyethylene glycol (PEG) or PEG derivative and mixtures thereof, or comprising propylene glycol, wherein the solvent is present at a concentration of about 70% to about 96.5% by weight of the total composition, at least a non-ionic surface-active agent at a concentration of about 0.1% to less than about 10% by weight of the total composition.

A process for the manufacture of polytrimethylene ether glycol comprising the steps of: (a) providing (1) 1,3-propanediol reactant selected from the group consisting of 1,3-propanediol and/or oligomers or prepolymers of 1,3-propanediol having a degree of polymerization of 2-9 and mixtures thereof, and (2) a polycondensation catalyst; and (b) polycondensing the 1,3-propanediol reactant to form a polytrimethylene ether glycol at less than one atmosphere pressure, and the product of the process. In addition, polytrimethylene ether glycol has a number average molecular weight greater than 1,500, an APHA color of less than 120, an unsaturation of less than 20 meq/kg, and a content of cyclic ether oligomers of less than 2%.

Composition for pharmaceutical or cosmetic use, capable of forming a microemulsion, comprising at least: an active principle, a lipophilic phase consisting of a mixture of fatty acid esters and glycerides, a surfactant (SA), a cosurfactant (CoSA), a hydrophilic phase, characterized: in that the lipophilic phase consists of a mixture of C8 to C18 polyglycolized glycerides having a hydrophilic-lipophilic balance (HLB) of less than 16, this lipophilic phase representing from 30 to 75% of the total weight of the composition; in that the surfactant (SA) is chosen from the group comprising saturated C8-C10 olyglycolized glycerides and oleic esters of polyglycerol, this surfactant having an HLB of less than 16; in that the cosurfactant (CoSA) is chosen from the group comprising lauric esters of propylene glycol, oleic esters of polyglycerol and ethyl diglycol; in that the SA/CoSA ratio is between 0.5 and 6; and in that the hydrophilic phase of the final microemulsion is supplied after ingestion by the physiological fluid of the digestive milieu.

An aqueous cutting fluid which can reduce the impact on working environment and the global environment, and can achieve both preventing precipitates from becoming a hard cake and keeping high dispersibility for abrasive grains is provided. Such an aqueous cutting fluid is obtained by a method comprising dispersing abrasive grains (G) in an aqueous composition comprising a dispersion medium (M) containing a hydrophilic alcohol compound such as ethylene glycol, a lipophilic alcohol compound such as propylene glycol and water, and silica colloid particles dispersed stably in the medium. The dispersion medium (M) is odorless and not flammable. The abrasive grains (G) may settle out after a time, but they do not closely contact with one another, and therefore the resulting precipitates do not become a hard cake, which allows the re-dispersion and reuse of precipitated grains. The instant aqueous cutting fluid is inherently low viscous, and the reduction of viscosity owing to the contamination of water and the increase of viscosity owing to contamination of shavings are both moderate. As a result, the cutting fluid has a long life. And articles which have been cut using the cutting fluid can be washed with water. Further, as the dispersion medium (M) is a biodegradable low molecular weight organic compound, a waste liquid from a process using the cutting fluid can be disposed with an activated sludge.

The invention is a continuous process for the preparation of polytrimethylene ether glycol from 1,3-propanediol reactant. In addition, the invention is directed to a continuous multi-stage process comprising reacting at least one reactant in a liquid phase in an up-flow column reactor, and forming a gas or vapor phase by-product wherein the gas or vapor phase by-product is continuously removed at the top and at least one intermediate stage.

A stripping composition and a method of using the stripping composition to remove cured resins such as elastomeric silicone adhesive deposits from ceramic and metal surfaces of electronic modules to provide reworkability options in assembly processes including diagnostic parts, parts replacement and recovery of substrates from test vehicles is provided. The stripping compositions comprise a base preferably an organic base such as a quaternary ammonium hydroxide, a surfactant and a high boiling environmentally and chemically safe solvent such as di- or tri-propylene glycol alkyl ether. In another stripping composition, the base is used in combination with a mixture of N-alkyl pyrrolidone components, preferably an N-alkyl pyrrolidone and a N-cycloalkyl pyrrolidone. The stripping compositions are used to contact an electronic module having a cured resin such as a silicone adhesive residue deposit on the module surface to dissolve, remove or strip the deposit.

Dental bleaching compositions that include sucralose as a non-nutritive sweetener. The bleaching agent is dispersed within a carrier, which is optimally sticky and viscous, such as a mixture of a liquid or solvent carrier and a tackifying agent. Propylene glycol and/or glycerin are especially useful liquid or solvent carriers. Flavorants may be added to enhance the taste of the dental compositions, since they will be used within a person's mouth. For best results, a flexible, thin-walled, comfortable-fitting, custom dental tray is used with the dental bleaching compositions. The dental compositions are preferably sufficiently sticky and viscous so as to adhere and retain a dental tray against a person's teeth which is designed so as to not exert significant mechanical pressure onto the person's teeth.

Methods and compositions for reactions of hydrogen over a Re-containing catalyst with compositions containing a 5-carbon sugar, sugar alcohol, or lactic acid are described. It has been surprisingly discovered that reaction with hydrogen over a Re-containing multimetallic catalyst resulted in superior conversion and selectivity to desired products such as propylene glycol. A process for the synthesis of PG from lactate or lactic acid is also described.

The present invention provides processes for the manufacturing of polypeptide conjugates. In particular, the invention provides methods for the purification of polypeptide conjugates, which include at least one polymeric modifying groups, such as a poly(alkylene oxide) moiety. Exemplary poly(alkylene oxide) moieties include poly(ethylene glycol) (PEG) and poly(propylene glycol). In an exemplary process, hydrophobic interaction chromatography (HIC) is used to resolve different glycoforms of glycoPEGylated polypeptides.

The invention discloses light-fragrance electronic cigarette atomized smoke solution and a preparation method thereof. The atomized smoke solution comprises the following components in percentage by weight: 30-45 percent of propylene glycol, 20-35 percent of glycerol, 5-15 percent of deionized water, 5-15 percent of alcohol, 15-45 percent of traditional Chinese medicine liquid, 2-5 percent of tobacco flavor, 2-6 percent of tobacco extract and 0.1-2 percent of forming agent, wherein the traditional Chinese medicine liquid is extraction liquid which is obtained by extracting traditional Chinese medicine mixture through water distillation or alcohol extraction, and the traditional Chinese medicine mixture consists of tendrilleaf fritillary bulb, mint leaf, loquat leaf, dendranthema indicum, violet, sweet-scented osmanthus and green tea. The light-fragrance electronic cigarette atomized smoke solution not only can meet the smoking demands of smokers, but also can effectively reduce irritation of smoke to tracheas, bronchi, throats and lungs of bodies, and has the efficacies of clearing heat, moistening lungs, arresting coughs, expelling phlegm, refreshing and restoring consciousness, regulating qi-flowing, resolving stagnation and the like.

Described are nanoparticulate formulations of a benzodiazepine, such as lorazepam, that does not require the presence of polyethylene glycol and propylene glycol as stabilizers, and methods of making and using such formulations. The formulations are particularly useful in aerosol and injectable dosage forms, and comprise nanoparticulate benzodiazepine, such as lorazepam, and at least one surface stabilizer. The formulations are useful in the treatment of status epilepticus, treatment of irritable bowel syndrome, sleep induction, acute psychosis, and as a pre-anesthesia medication.

A fuel additive for middle distillate fuels is a mixture of at least one methyl, ethyl, propyl or butyl ester of a vegetable oil or a C₁₆-C₁₈ fatty acid, at least one alkyl ether of propylene glycol, a surfactant, and an antioxidant. A fuel additive for gasoline is a mixture of ligroin or toluene/xylene, at least one alkyl ether of propylene glycol, a surfactant, and tertiary amyl methyl ether.

The present invention provides a composition alleviated in a bitter taste or the like of a medicament. The present invention relates to a composition comprising a basic medicament having an unpleasant taste and polyvinylpyrrolidone and/or copolyvidone; or a method for alleviating an unpleasant taste of a basic medicament having the unpleasant taste by adding polyvinylpyrrolidone and/or copolyvidone. The present invention further provides a composition comprising (1) a basic medicament, (2) polyvinylpyrrolidone and/or copolyvidone, and (3) propylene glycol and/or D-sorbitol; a composition comprising (1) a basic medicament, (2) polyvinylpyrrolidone and/or copolyvidone, and (4) an antioxidant; and a composition comprising (1) a basic medicament, (2) polyvinylpyrrolidone and/or copolyvidone, and (5) a colorant or flavor containing a sulfuric acid or sulfurous acid group.

The invention relates to a multifunctional high-efficiency heat-preservation heat-insulation coating material. The compositions in percentage by weight of the coating material are: 10 to 20 percent of water, 0.1 to 0.2 percent of multifunctional auxiliary agent, 0.1 to 0.2 percent of wetting agent, 0.5 to 0.8 percent of dispersing agent, 0.3 to 0.5 percent of antifoam agent, 1.5 to 3.0 percent of propylene glycol, 16 to 20 percent of rutile-type titanium pigment, 3 to 5 percent of mica powder, 6 to 8 percent of hollow glass microballoon, 3 to 5 percent of infrared powder, 3 to 4 percent of fire retardant, 35 to 40 percent of elastic acrylic acid emulsion, 3 to 5 percent of opaque polymer, 0.5 to 0.8 percent of film-forming auxiliary agent, 0.2 to 0.3 percent of bactericide and preservative and 0.3 to 0.6 percent of thickening agent. The multifunctional high-efficiency heat-preservation heat-insulation coating material is of aqueous monocomponent and does no harm to human body and the environment so as to be an environment-friendly product; meanwhile, the coating material also has excellent waterproof and fire-retardation functions, convenient and quick construction, excellent adhesion strength, outstanding crack resistance, infrequent pollution and service life as long as 15 years; moreover, during practical use, the coating material can effectively reduce solar heat accumulated in a house by approximately 8 to 15 DEG C, and can greatly reduce energy consumption.

A room temperature stable aqueous cannabinoid formulation is disclosed. In preferred embodiments, the cannabinoid formulation comprises dronabinol in a mixture of buffer solution, and organic cosolvents such as ethanol, propylene glycol and polyethylene glycol.

Disclosed are skin care compositions comprising an admixture of sucrose acetate isobutyrate and certain diol and glycerol carboxylate esters. The liquid skin care compositions are useful as cosmetic, protective and therapeutic dermatological compositions and comprise an admixture of sucrose acetate isobutyrate and one or more carboxylic acid esters of a polyol selected from propylene glycol and glycerol wherein the carboxylate ester residues contains from 2 to 10 carbon atoms. The skin care compositions exhibit smoothness and water resistance when applied to the skin such as the human body including eyelids and lips.

The invention discloses an electronic cigarette liquid rich in plant flavone. The electronic cigarette liquid comprises the following raw materials in percentage by mass: 50-70% of propylene glycol, 5-10% of glycerinum, 5-15% of deionized water, 5-15% of natural flavone extract, 4-8% of tobacco extract, 2-6% of tobacco essence and 2-6% of thickener, wherein the natural flavone extract is the extract obtained by distilling by vapour or extracting a plant mixture by ethyl alcohol, and the total flavonoid content is 20-50% by total flavonoid content; the plant mixture is composed of chuzhou chrysanthemum, iris tectorum roots, propolis, orange peel, grape, peanut coat, lily, radix puerariae, scutellaria baicalensis, roxburgh rose and green tea. The electronic cigarette liquid disclosed by the invention is capable of meeting the smoking needs of smokers; meanwhile, the rich plant flavone has the effects of resisting oxidization, preventing aging, and adjusting immunity, and also has a healthcare effect on heart and cerebral vessels to a certain extent.

A process for making modified polybutylene terephthalate random copolymers from a polyethylene terephthalate component includes reacting an oligomeric diol component selected from the group consisting of bis(hydroxybutyl)terephthalate, bis(hydroxybutyl)isophthalate, hydroxybutyl-hydroxyethyl terephthalate, and combinations thereof to a reactor; (i) a polyethylene terephthalate component selected from the group consisting of polyethylene terephthalate and polyethylene terephthalate copolymers with (ii) a diol component selected from the group consisting of 1,4-butanediol, ethylene glycol, propylene glycol, and combinations thereof, in the reactor under conditions sufficient to depolymerize the polyethylene terephthalate component into a first molten mixture; combining the first molten mixture is combined with 1,4-butanediol under conditions to form a second molten mixture; and placing the second molten mixture under conditions sufficient to produce the modified polybutylene terephthalate random copolymers. Also described are compositions and articles made from the process.

The invention relates to an energy-saving and emission-reducing technique for producing propane epoxide by using hydrogen peroxide epoxidation propylene, belonging to the field of petrochemical technology. The technique comprises a reaction part, a separation part and a tail gas treatment part, and is characterized in that propylene and hydrogen peroxide have an epoxidation reaction through a Ti-Si molecular sieve at medium pressure and low temperature; the propylene and solvent have higher recovery rate, the propane epoxide meeting the requirement of commercial-grade purity can be obtained by extractive distillation, and the joint product of propylene glycol monomethyl ether can be prepared by azeotropic distillation and purification; after part of tail gas is condensed and absorbed and the propylene is recovered, the tail gas reaches the standard and is discharged; extracting agent, absorbing agent and entrainer which are needed by the technique are in closed cycle in the process flow; and medium-pressure operation is adopted by a propylene tower to ensure water-cooling on the top of the tower, and thermal energy can be recovered by multiple-effect rectification and matching of streams. The technique has the effect and the advantage that the new energy-saving and environment-friendly technique for producing the propane epoxide can generate remarkable economic and social benefits.

The invention relates to a process for making modified polybutylene terephththalate random copolymers from a polyethylene terephthalate component. The invention relates to a three step process in which a diol component selected from the group consisting of ethylene glycol, propylene glycol, and combinations thereof reacts with a polyethylene terephthalate component under conditions sufficient to depolymerize the polyethylene terephthalate component into a first molten mixture; and where the first molten mixture is combined with 1,4-butanediol under conditions that create a second molten mixture that is subsequently placed under subatmospheric conditions that produce the modified polybutylene terephthalate random copolymers. The invention also relates to compositions made from the process.

The present invention relates to a new vegetable-based composition for liquid to be vaporized in electronic cigarettes, comprising water and propylen glycol of vegetable origin and/or glycerol and/or nicotine and/or natural flavors.

This invention provides methods for producing ethylene glycol from polyhydroxy compounds such as cellulose, starch, hemicellulose, glucose, sucrose, fructose, fructan, xylose and soluble xylooligosaccharides. The methods uses polyhydroxy compounds as the reactant, a composite catalyst having active components comprising one or more transition metals of Groups 8, 9, or 10, including iron, cobalt, nickel, ruthenium, rhodium, palladium, iridium, and platinum, as well as tungsten oxide, tungsten sulfide, tungsten hydroxide, tungsten chloride, tungsten bronze oxide, tungsten acid, tungstate, metatungstate acid, metatungstate, paratungstate acid, paratungstate, peroxotungstic acid, pertungstate, heteropoly acid containing tungsten. Reacting at a temperature of 120-300° C. and a hydrogen pressure of 1-13 MPa under hydrothermal conditions to accomplish one-step catalytic conversion. It realizes efficient, highly selective, high yield preparation of ethylene glycol and propylene glycol from polyhydroxy compounds. The advantage of processes disclosed in this invention include renewable raw material and high atom economy. At the same time, compared with other technologies that converts biomass raw materials into polyols, methods disclosed herein enjoy advantages including simple reaction process, high yield of targeted products, as well as easy preparation and low cost for the catalysts.

The present invention provides a solvent for electronic cigarette liquid, comprising sorbitol. In the present invention, sorbitol is used as the solvent for electronic cigarette liquid. The electronic cigarette liquid which is prepared with the solvent for electronic cigarette liquid provided by the present invention is not greasy and free of miscellaneous taste, and therefore provides relatively higher comfort level during smoking. Further, the electronic cigarette liquid provided by the present invention may further comprise one or more of propylene glycol, glycerol, and mannitol. Due to the effects of propylene glycol, glycerol and mannitol, the sorbitol makes the electronic cigarette liquid which is prepared with the solvent for electronic cigarette liquid provided by the present invention generate a relatively greater amount of smoke, improve the experience of the smoker, and provide a thick and full experience, a smooth mouthfeel without any miscellaneous taste, and a relatively higher comfort level during smoking. Furthermore, all the components in the solvent for electronic cigarette liquid provided by the present invention are of food grade, and are harmless to the body of the smoker.

The invention discloses an electronic cigarette liquid prepared from strong-flavor tobacco. The liquid is made by mixing 10% to 30% of strong-flavor tobacco leaf extract, 5% to 10% flavoring essence for tobacco, 1% to 5% flavoring spices for tobacco, 5% to 10% deionized water, 10% to 20% glycerol, and the balance being propylene glycol. The strong-flavor tobacco leaf extract is selected from the group consisting of strong-flavor flue-cured tobacco leaf extract in Henan, Anhui, Guangxi, Guangdong and Hunan, or the mixtures thereof. The electronic cigarette liquid takes the strong-flavor tobacco leaf extract as a main component, so that the smell and the taste of electronic cigarettes are closer to the traditional cigarette. The electronic cigarette liquid is used for atomization of the electronic cigarettes without production of tar or carbon dioxide, so that the harm to consumers is greatly reduced and the harm of second-hand smoke is avoided.

The present invention provides improved apparatus, systems, and methods of delivering a breathable fluid stream carrying an atomized or vaporized functional liquid. In particular, a fluid-permeable exchangeable cartridge is provided for containing the functional liquid to be introduced into a fluid stream comprising a breathable base fluid flowing through the cartridge. Preferably, the breathable base fluid includes a solvation enhancer such as atomized or vaporized propylene glycol or glycerin. In another aspect, a throttling valve system is provided for adjusting the ratio of flow from a breathable base fluid source through the cartridge or around the cartridge via a bypass channel, to vary the concentration of the functional liquid component mixed with the breathable base fluid.

The invention discloses throat nourishing health-care type electronic cigarette liquid, which is used for producing electronic cigarettes, can meet the requirement of smoking addiction, contributes to smoke absorbing and throat nourishing, protects the throat of a human body and maintains health. The electronic cigarette liquid mainly comprises the following components in percentage by weight: 2 to 6 percent of plant cigarette substituting agent, 48 to 55 percent of propylene glycol, 25 to 35 percent of pure water, 4 to 6 percent of tobacco flavor, 0.25 to 1.2 percent of stabilizer, 4 to 9 percent of thickening agent and 3 to 6 percent of Chinese medicinal component, wherein the Chinese medicinal component comprises 3 to 5 types of watermelon frost, peppermint oil, menthol, blumea aromatria, eucalyptus oil and star anise oil according to an equal proportion. The electronic cigarette liquid has the effects of promoting secretion and nourishing throat, clearing sound and eliminating phlegm, and reducing swelling and relieving pain during the enjoyment of smoking, can prevent and treat throat sore, hoarseness, canker sore, stomatitis and gum swelling and pain, and has good curative effect on throat diseases such as dryness, swelling and pain of the throat accompanied by the hoarseness.

The invention discloses application of diglycerol in electronic cigarette tobacco juice preparation, and discloses electronic cigarette tobacco juice prepared through the application. The electronic cigarette tobacco juice is made of the raw materials, by mass, five percent to ten percent of tobacco extracts, two percent to four percent of tobacco flavor, one percent to three percent of tobacco essence, two percent to six percent of edible essence, one percent to two percent of natural nicotine, one percent to four percent of natural phytoextraction essence, 30 percent to 85 percent of the diglycerol, and the balance one or more kind of propylene glycol, glycerol, ethyl alcohol, butanediol and triethylene glycol. The natural phytoextraction essence is formed by mixing agilawood, sandalwood, elecampane, bee sage roundleaves, sauropus spatulifolius and vitex leaves according to the mass ratio of (1-3):(1-2):(1-2):(1-2):(1-2):(1-2), and is obtained through supercritical CO2 extraction. The invention further discloses a method for preparing the electronic cigarette tobacco juice. The Chinese style flue-cured tobacco extractive and tobacco flavor and essence ingredients are included in the electronic cigarette tobacco juice, the odor and taste are close to those of traditional Chinese style flue-cured tobacco odor type cigarettes, and the smoking satisfaction sense is improved.

The liquid composition for electronic cigarettes includes water, a natural glycol, glycerol, natural flavorings and possibly nicotine. The natural glycol is composed of 1,3-propanediol, obtained through bioprocessing of corn sugars.