8939 results about "Propylene 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.

Methods for hydrogenolysis are described which use a Re-containing multimetallic catalyst for hydrogenolysis of both C—O and C—C bonds. Methods and compositions for reactions of hydrogen over a Re-containing catalyst with compositions containing a 6-carbon sugar, sugar alcohol, or glycerol 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.

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.

A cartomizer for an electronic cigarette having an elongated, hollow body with a mouthpiece in a first end and a battery coupling in an opposite second end. An atomizing coil is disposed in the body generally perpendicular to a longitudinal axis of the cartomizer and has positive and negative terminal leads pressfit connected to positive and negative terminals separated by an insulative spacer in the battery coupling. A fibrous wick is inserted inside the atomizing coil and a cloth tube is disposed generally parallel to the longitudinal axis of the cartomizer and extends from the atomizing coil to the mouthpiece. A volatile liquid mixture of preferably 80% propylene glycol and 20% veggie glycol with liquid nicotine and/or flavoring is disposed in the body.

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 present invention teaches a foamable pharmaceutical carrier comprising polypropylene glycol (PPG) alkyl ether, a surface-active agent water and a liquefied hydrocarbon gas propellant; and pharmaceutical compositions thereof.

The present invention further teaches a foamable pharmaceutical carrier comprising polypropylene glycol (PPG) alkyl ether, a surface-active agent, and a liquefied hydrocarbon gas propellant; and pharmaceutical compositions thereof.

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. The bleaching agent is dispersed within a carrier, which is optimally sticky and viscous such as a mixture of propylene glycol and silica fume. Anhydrous propylene glycol and/or anhydrous glycerin are especially useful in order to maintain the desired degree of hydration of the perborate being used. 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 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.

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.

Organisms are provided which express enzymes such as glycerol dehydratase, diol dehydratase, acyl-CoA transferase, acyl-CoA synthetase β-ketothiolase, acetoacetyl-CoA reductase, PHA synthase, glycerol-3-phosphate dehydrogenase and glycerol-3-phosphatase, which are useful for the production of PHAs. In some cases one or more of these genes are native to the host organism and the remainder are provided from transgenes. These organisms produce poly (3-hydroxyalkanoate) homopolymers or co-polymers incorporating 3-hydroxypropionate or 3-hydroxyvalerate monomers wherein the 3-hydroxypropionate and 3-hydroxyvalreate units are derived from the enzyme catalysed conversion of diols. Suitable diols that can be used include 1,2-propanediol, 1,3 propanediol and glycerol. Biochemical pathways for obtaining the glycerol from normal cellular metabolites are also described. The PHA polymers are readily recovered and industrially useful as polymers or as starting materials for a range of chemical intermediates including 1,3-propanediol, 3-hydroxypropionaldehyde, acrylics, malonic acid, esters and amines.

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.

To provide a toner produced by emulsifying or dispersing in an aqueous medium particles containing at least polyester resin particles and by aggregating the polyester resin particles, wherein the polyester resin particles contain a polyester resin, the polyester resin is produced by condensation polymerization of an alcohol component containing 65 mol % or more 1,2-propanediol in a dihydroxy alcohol component and a carboxylic acid component containing purified rosin, and the softening point of the polyester resin is 80° C. or more and less than 120° C., and wherein the toner comprises a colorant and a releasing agent.

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.

Described is an additive composition made up of at least one dibasic ester, at least one non-ionic surfactant, at least one terpene or terpene derivative and optionally, at least one polyalkylene glycol and/or water. The composition is useful as an additive for well treatment fluids used for cleaning or stimulation of oil or gas wells.

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.

The invention provides a waterborne external thermal insulation coating. The coating consists of the following components in part by weight: 25 to 50 parts of functional filler, 30 to 50 parts of emulsion, 20 to 35 parts of filler, 8 to 20 parts of film-forming aid, 1 to 3 parts of wetting dispersant, 1 to 2 parts of propylene glycol, 1 to 2 parts of defoaming agent, 0.5 to 1.5 parts of mildew preventive, 1 to 5 parts of thickening agent and 10 to 20 parts of water. The invention is characterized in that: the coating is safe and environment-friendly, has excellent waterproof and anticorrosive properties, high thermal resistance and reflectivity, excellent thermal insulation property, and good weather resistance, is convenient to construct, and can be well adhered to various base materials, and the density of a dry film is low; an extremely thin hollow cavity layer is formed after the coating is coated on the surface of a base material and then is dried, so that an effective thermal barrier is formed; functional filler particles have large heated cathodes, low coefficient of thermal conductivity, and high heat reflectivity; the consumption of energy sources is remarkably reduced; the coating can reflect, refract and scatter thermal radiation and stop heat conduction; and the energy is saved.

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.

An exemplary printable composition of a liquid or gel suspension of diodes comprises a plurality of diodes, a first solvent and/or a viscosity modifier. In other exemplary embodiments a second solvent is also included, and the composition has a viscosity substantially between about 100 cps and about 25,000 cps at about 25° C. In an exemplary embodiment, a composition comprises: a plurality of diodes or other two-terminal integrated circuits; one or more solvents comprising about 15% to 99.9% of any of N-propanol, isopropanol, dipropylene glycol, diethylene glycol, propylene glycol, 1-methoxy-2-propanol, N-octanol, ethanol, tetrahydrofurfuryl alcohol, cyclohexanol, and mixtures thereof; a viscosity modifier comprising about 0.10% to 2.5% methoxy propyl methylcellulose resin or hydroxy propyl methylcellulose resin or mixtures thereof; and about 0.01% to 2.5% of a plurality of substantially optically transparent and chemically inert particles having a range of sizes between about 10 to about 50 microns.

The invention discloses a microcapsule essence perfume for cigarettes as well as a preparation method of the microcapsule essence perfume. The microcapsule essence perfume contains the following raw materials in parts by weight: 1-3 parts of essence, 0.05-0.2 part of glycerinum or/and propylene glycol, 1-5 parts of wall materials and 0.01-0.03 part of emulsifier. The preparation method comprises the steps of: mixing essence, glycerinum or/and propylene glycol to obtain a mixture, evenly stirring the mixture, adding 95% ethanol with 1-10 times weight of the mixture, and mixing and evenly mixing to obtain a mixed solution; adding wall materials and emulsifier in the mixed solution and stirring for homogenization; and sealing, standing for 1-2 hours at normal temperature, refrigerating for 15-60 minutes at the temperature of minus 20 DEG C to minus 80 DEG C, drying for 8-24 hours at the vacuum degree of 30-80MPa and the temperature of 40-80 DEG C, grinding dried products, sieving the ground products to prepare microcapsule particles, thereby obtaining the microcapsule essence perfume for cigarettes. The perfume for cigarettes is made to microcapsules, so that perfume is free from being affected by external factors, and loss and fragrance distortion caused by volatile components in the perfume for cigarettes are effectively reduced.