6601 results about "Propanoic acid" patented technology

A low energy process for producing acetic acid by the carbonylation of methanol is disclosed. The process involves a rhodium-catalyzed system operated at less than about 14% water utilizing up to 2 distillation columns. The process is preferably controlled such that the product stream has a low level of propionic acid impurity and the level of aldehyde impurities is minimized by way of aldehyde removal or minimizing aldehyde generation. The level of iodides is controlled by contacting the product, at elevated temperatures, with ion exchange resins. In preferred embodiments, at least one silver or mercury exchanged macroreticular strong acid ion exchange resin is used to purify the product. The high temperature treatment provides the added benefit of controlling the Color Value (Pt-Co units) of the product stream.

A mixed liposome pharmaceutical formulation with multilamellar vesicles, comprises a proteinic pharmaceutical agent, water, an alkali metal lauryl sulphate in a concentration of from 1 to 10 wt. / wt. %, at least one membrane-mimetic amphiphile and at least one phospholipid. The membrane-mimetic amphiphile is hyaluronic acid, pharmaceutically acceptable salts of hyaluronic acid, lauramidopropyl betain, lauramide monoisopropanolamide, sodium cocoamphopropionate, bishydroxypropyl dihydroxypropyl stearammonium chloride, polyoxyethylene dihydroxypropyl stearammonium chloride, dioctadecyldimethylammonium chloride, sulphosuccinates, stearamide DEA, gamma-linoleic acid, borage oil, evening of primrose oil, monoolein, sodium tauro dihydro fusidate, fusidic acid, alkali metal isostearyl lactylates, alkaline earth metal isostearyl lactylates, panthenyl triacetate, cocamidopropyl phosphatidyl PG-diammonium chloride, stearamidopropyl phosphatidyl PG-diammonium chloride, borage amidopropyl phosphatidyl PG-diammonium chloride, borage amidopropyl phosphatidylcholine, polysiloxy pyrrolidone linoleyl phospholipid, trihydroxy-oxo-cholanylglycine and alkali metal salts thereof, and octylphenoxypolythoxyethanol, polydecanol X-lauryl ether, polydecanol X-oleyl ether, wherein X is from 9 to 20, or combinations thereof. The phospholipid is phospolipid GLA, phosphatidyl serine, phosphatidylethanolamine, inositolphosphatides, dioleoylphosphatidylethanolamine, sphingomyelin, ceramides, cephalin, triolein, lecithin, saturated lecithin and lysolecithin, or a combination thereof. The amount of each membrane mimetic amphiphile and phospholipid is present 1 to 10 wt. / wt. % of the total formulation, and the total concentration of membrane mimetic amphiphiles and phospholipids is less than 50 wt. / wt. % of the formulation.

The invention relates to a probiotic combination comprising different combinations of lactobacilli. propionic acid bacteria and / or bifidobacteria. The probiotics are preferably combined with a suitable prebiotic to form a synbiotic. The combination of the invention can be consumed as such or combined with a suitable foodstuff or pharmaceutical product, and it is therapeutically useful for example for stimulating the immune system and for general health improvement.

An environmentally clean dual fuel for an internal combustion engine, comprising acetylene as a primary fuel and a combustible fuel, such as one or more fluids selected from an alcohol such as ethanol, methanol or any other alcohol or alcohols from the group comprising C1-C20 carbon chains, ethers such as from the group comprising dimethyl ether, diethyl ether, methyl t-butyl ether, ethyl t-butyl ether, t-amyl methyl ether, di-isopropyl ether and the like, low-molecular-weight esters such as from the group comprising methyl formate, methyl acetate, ethyl acetate, methyl propionate, ethyl propionate and the like, or other suitable combustible fluid such as mineral spirits and the like, as a secondary fuel for operatively preventing early ignition and knock arising from the primary fuel. The dual fuel, internal combustion system, which generally utilizes a two-stage process for start-up and operation and can be operated with air- or liquid-cooling, is environmentally clean with hydrocarbon, CO, NOx, and SOx emissions substantially eliminated.

The present invention relates to 25 hitherto undescribed genes of B. licheniformis and gene products derived therefrom and all sufficiently homologous nucleic acids and proteins thereof. They occur in five different metabolic pathways for the formation of odorous substances. The metabolic pathways in question are for the synthesis of: 1) isovalerian acid (as part of the catabolism of leucine), 2) 2-methylbutyric acid and / or isobutyric acid (as part of the catabolism of valine and / or isoleucine), 3) butanol and / or butyric acid (as part of the metabolism of butyric acid), 4) propyl acid (as part of the metabolism of propionate) and / or 5) cadaverine and / or putrescine (as parts of the catabolism of lysine and / or arginine). The identification of these genes allows biotechnological production methods to be developed that are improved to the extent that, to assist these nucleic acids, the formation of the odorous substances synthesized via these metabolic pathways can be reduced by deactivating the corresponding genes in the micro-organism used for the biotechnological production. In addition, these gene products are thus available for preparing reactions or for methods according to their respective biochemical properties.

An element of an absorbent article is provided. The element has a bio-based content of at least about 50% based on the total weight of the element, and comprises a synthetic polymer derived from a renewable resource via a first intermediate compound selected from the group consisting of crotonic acid, propiolactone, ethylene oxide, i-propanol, butanol, butyric acid, propionic acid, 2-acetoxypropanoic acid, methyl 2-acetoxypropanoate, methyl lactate, ethyl lactate, polyhydroxybutyrate, and a polyhydroxyalkanoate comprising 3-hydroxypropionate monomers. An absorbent article comprising the element and a method of making an element for an absorbent article also are provided.

The invention discloses polyhexamethylene guanidine propionic acid and preparing method thereof. The preparing method employs stepwise synthesis, which includes steps of: sufficiently mixing dicyandiamide and alanine under high temperature to synthesize aminoguanidine propionic acid, mixing the aminoguanidine propionic acid, triethylidenepropyldiamine and initiator under high temperature to synthesize the polyhexamethylene guanidine propionic acid. Advantages of the invention are: sterilization effect is excellent, toxity is actually nontoxic level, effect of sterilization is better than existent technique, due to overcoming strong hygroscopicity in existence, the polyhexamethylene guanidine propionic acid can be produced to stable powder, thereby being widely used in fields such as weave, plastic, daily chemicals and water treatment.

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.

The invention discloses a production method for insert gloves water-based polyurethane coating bonding materials. The method comprises the following steps of: under the protection of dry nitrogen, adding polyether glycols (including polyether diatomic alcohol and / or polyether triatomic alcohol) having undergone vacuum dewatering and isocyanate into a reaction vessel; heating the mixture up to between 80 and 100 DEG C for reaction after even mixing; then adding a hydrophilic chain extender such as dihydromethyl propionic acid (DMPA) and a catalyst for reaction at a temperature of between 80 and 100 DEG C; finally adding the chain extender and a solvent into the mixture for reaction at a temperature of between 55 and 65 DEG C until the NCO content of the isocyanate group does not change; discharging the reactant after temperature reduction to obtain an ionomer; neutralizing a preformed polymer with triethylamine or diethanolamine or triethanolamine and then adding water the mixed solution for emulsification to obtain water-based polyurethane latex; and carrying out reduced pressure distillation to remove the solvent and obtain the product. The synthesized water-based polyurethane resin which serves as a gloves coating has the advantages of good air and moisture permeability, excellent mechanical performance, solvent resistance, ageing resistance, resistance to corrosion caused by chemical mediators, oil resistance, resistance to hooking, cutting and piercing, excellent abrasion resistance, odorlessness, innocuous and nondestructive for contacting with skin, etc.

alpha-keto acids and certain precursors and derivatives thereof, particularly those selected from the group which consists of glyoxylic acid, 2-oxo-propanoic acid, 2-oxo-butanoic acid, 3-methyl-2-oxo butanoic acid, 3-methyl-2-oxo pentanoic acid, 4-methyl-2-oxo pentanoic acid, 3-hydroxy-2-oxo-propanoic acid, oxalacetic acid, 2-oxo-glutaric acid, 2-oxo-3-phenyl-propanoic acid, 3-(4-hydroxy-phenyl)-2-oxo-propanoic acid, 2-oxo-1H-indole-3-propanoic acid, 2-oxo-1H-imidazole-4-propanoic acid, 4-methylthio-2-oxo-butanoic acid, 3-mercapto-2-oxo-propanoic acid, 3-hydroxy-2-oxo-butanoic acid, 6-amino-2-oxo-hexanoic acid and 5-guanido-2-oxo-pentanoic acid, and precursors and derivatives thereof that are capable of being formed from or releasing said acids in the use medium, are useful as flavouring ingredients. Such ingredients are useful for preparing flavouring compositions and a wide variety of flavoured foodstuffs to which they impart greater creaminess and bulkiness so that they have heightened effect in the mouth and generally an enhanced mouthfeel. They are also useful for enhancing the sweetness of foods sweetened with natural or artificial sweeteners, and giving it a more natural character.

This invention relates to a process for producing a mixture of levulinic acid esters and formic acid esters from biomass and olefins, and the composition prepared therefrom. This invention also relates to usage of the mixture of these esters as fuel and as fuel additives for gasoline fuel, diesel fuel, and biofuel.

A process for producing levulinic acid and its esters from biomass is disclosed comprising: (i) feed preparation module characterized by subjecting biomass to a high-temperature refining treatment; (ii) hydrolysis reaction module that facilitates the hydrolysis of biomass to its respective sugars and their subsequent transformation to levulinic acid, formic acid, furfural, and char as well as facilitates the separation of lignin-based char by-product; (iii) product separation and recovery module utilizing a solvent extraction technique such as using furfural by-product as extracting solvent; and (iv) optionally, conversion of levulinic acid to levulinate ester. When desired, the disclosed process may be integrated into existing pulp mills.

A method is disclosed for the acid hydrolysis of carbohydrates in or from biomass, using a solvent system including an aqueous ether, where the ether form a majority of the system, which affords high yields to the platform chemicals such as 2-furfural and 5-hydroxymethylfurfural (5-HMF). The later can also undergo a domino reaction to chemicals including levulinic acid, particularly with oxygenated anions and greater water content. A total dissolution and reaction of biomass occurs under a range of relatively mild conditions (combined Severity range ˜2.2-2.6). Lignin and lignin derived products can be easily separated by precipitation.

Methods for the synthesis of CCI-779 and proline-CCI-779 are described, including a method involving lipase-catalyzed acetylation of 42-hydroxy of rapamycin with a vinyl ester of 2,2-bis(hydroxymethyl) propionic acid in an organic solvent followed by deprotection. Also provided are products containing proline-CCI-779 and uses thereof.

Reversed phase suspension polymerization is allowed while controlling content of minor components in monomer, particularly controlling a content of acetic acid and propionic acid being not higher than 500 ppm, controlling a content of acrylic acid dimer being not higher than 1000 ppm, in acrylic acid. Cross-linked polymer obtained by the polymerization is subjected to a surface crosslinking treatment without substantially using an organic solvent, and under heating at high temperature (150° C. or higher and 250° C. or lower). Thereafter, agglomeration is carried out without substantially using an organic solvent. Accordingly, a particulate water-absorbing agent including a water-absorbing resin having superior property, and being suited for practical applications at high concentrations in absorbing cores such as a diaper and the like without generation of any odor of the organic solvent can be obtained because no volatile organic compound is included.

The invention relates to a method for growing blueberry, which comprises soil modification, seedling cultivation, seedling planting and fertilization. In the invention, a soil modifier is applied to soil and the organic materials in the soil modifier increase the content of fatty acids such as acetic acid and propionic acid of the soil, so the rate of mycorrhizal infection, which is capable of promoting the growth of the blueberry, improving blueberry yield, contributing to productivity improvement and soil modification and improving quality and sugar content of fruits, of the blueberry is improved; meanwhile, pine soil and grass carbon are used to regulate the pH value of the soil. In the invention, a rooting medium which contains IAA growth hormone and glycine betaine is used to cultivate the seedlings, so the rooting rate of cuttings and transplanting survival rate are improved, the seedling cultivation time is reduced greatly, and the propagation efficiency is improved obviously. In the invention, a microbial fertilizer, a potassium sulfate type compound fertilizer, ammonium sulfate and diammonium phosphate are used for fertilizing the blueberry, wherein the ammonium sulfate can lower the pH value of the soil, namely the ammonium sulfate provides nutrients for the blueberry for growth and improves the growing environment of the blueberry; and thus, the blueberry yield is more improved effectively.

Oral care compositions having improved taste, said compositions comprising: a carrier material; from about 0.001 to about 10%, by weight of the composition, of an oral care component selected from metal salts, antimicrobial agents, bad breath reduction agents, bleaching agents, surfactants, or a combination thereof; and from about 0.0001 to about 1%, by weight of the composition, of a TRPA1 agonist selected from vanillin esters; benzoate esters; hydroxybenzoate derivatives; methoxy benzoate derivatives; hydroxybutanedioate derivatives; benzamidobenzoate derivatives; methylpropanoate derivatives; phenyl acetate derivatives; hex-3-enoate derivatives; 2-(furan-2-ylmethylsulfanyl)-3-methylpyrazine; phenylmethoxymethylbenzene; (2R)-2-azaniumyl-3-[(2R)-2-azaniumyl-3-oxido-3-oxopropyl]disulfanylpropanoate; (3E)-2-hydroxy-4,8-dimethylnona-3,7-dienal; (2R)-2-azaniumyl-3-[(2S)-2-azaniumyl-3-oxido-3-oxopropyl]disulfanylpropanoate; (3Z)-3-butylidene-2-benzofuran-1-one; 3-methyl-N-(3-methylbutyl)butan-1-imine; 2-(furan-2-ylmethyldisulfanylmethyl)furan; and combinations thereof. Uses thereof and methods of improving the taste of an oral care composition.

A climb-up pitfall trap for attracting and capturing bed bugs and the like comprises a rough exterior surface, a precipice, a smooth interior surface and sensory lures. The sensory lures include heat, carbon dioxide and / or a lure composition. The lure composition comprises a combination of (a) L-lactic acid, and (b) a fatty acid from the group consisting of (1) propionic acid, (2) butyric acid, and (3) valeric acid. The lure composition may also comprise (c) octenol. A method for attracting and capturing bed bugs and the like uses the climb-up pitfall trap in a bed bug infested environment.

A composition comprising an active ingredient selected from the group of 5-aminolevulinic acid or a pharmaceutically acceptable salt or derivative thereof; and an aqueous carrier comprising at least one absorption enhancer, an anesthetic, hyaluronic acid and at least one acid selected from the group consisting of glycolic acid and lactic acid. The composition is useful in a photodynamic method of treating skin disorders.

The invention discloses ultraviolet curing organic silicon modified polyurethane aqueous dispersoid and a preparation method thereof. The method comprises the following steps: firstly, dripping polyester or polyether diol, end hydroxyalkyl silicon oil, trimethylolpropane and the like into aromatic or aliphatic diisocyanate, and reacting the mixture to obtain organic silicon modified polyurethane prepolymer; then, adding polyhydromethyl propionic acid into the organic silicon modified polyurethane prepolymer, and reacting the mixture to obtain chain-extended organic silicon modified polyurethane prepolymer; and performing end capping reaction on the chain-extended organic silicon modified polyurethane prepolymer by using hydroxyethyl methacrylate or hydroxy-propyl acrylate to obtain organic silicon modified polyurethane acrylate oligomer, finally adding a neutralizer such as triethylamine and the like into the oligomer to perform neutralization reaction on the system, adding water into the mixture for diluting, and stirring and emulsifying the mixture to obtain the ultraviolet curing organic silicon modified polyurethane aqueous dispersoid. The ultraviolet cured coating film has better water tolerance and adhesive force, and can be widely applied in the fields of environmental protection, building, household appliances, ink, coating and the like.

The invention discloses a preparing method of fluorosilicate-composite emulsion with polyurethane-acrylate as nuclear shell structure, which is characterized by the following: dehydrating the composite liquid of macromolecular diatomic alcohol and dihydroxy-terminated polydimethyl siloxane; adding diisocyanate; adding dimethylol propionic acid, diatomic alcohol chain-extending agent and catalyst (disilicon acid dibutyl tin); cooling; emulsifying; extending chain in the water through polyamine chain-extending agent; obtaining the aqueous polyurethane dispersion modified by organic silicon as seed; dripping the fluorine acrylate monomer to do emulsion polymerization.

The invention relates to the technical field of lithium ion electrolytes, and in particular relates to a lithium-ion battery electrolyte with both high and low temperature performances. The electrolyte comprises lithium hexafluorophosphate, mixed organic solvents, filming additives, additives for improving the dielectric constant and the low temperature infiltration capability, and a lithium salt type additive, wherein the mixed organic solvents comprise a carbonic ester solvent and a linear carboxylic ester solvent; the linear carboxylic ester solvent in the mixed organic solvents is one or a mixture of more than two of ethyl propionate, propionic acid n-propyl ester, n-propyl acetate, acetic acid n-butyl ester and isobutyl acetate; and the additives for improving the dielectric constant and the low temperature infiltration capability are one or a mixture of more than two of fluoro ethylene carbonate, difluoro ethylene carbonate and 4-trifluoromethyl ethylene carbonate. A battery prepared from the lithium-ion battery electrolyte with both high and low temperature performances is long in service life, and both the good low temperature discharge performance of the battery is ensured, and the storage performance of the battery at the high temperature of 60 DEG C is effectively considered.

A method for attracting bed bugs includes placing a climb-up pitfall trap apparatus that includes a chemical lure composition. The lure composition includes a combination of (a) L-lactic acid, and (b) at least one fatty acid or salt selected from the group consisting of (1) propionic acid, (2) butyric acid, and (3) valeric acid, and (c) 1-octen-3-ol, and (d) a suitable ketone, and (e) a suitable aliphatic sulfide. The trap may also include in conjunction with the lure composition a carbon dioxide source and / or a heat source to compose a lure arrangement.

Novel beta-aryl-alpha-substituted propanoic acids having hypolipidemic and hypocholesteremic activities.

The present invention relates to methods for treating and preventing acne or P. acnes infection in a subject comprising topically administering to the subject in need thereof an anti-acne nanoemulsion composition.

The invention relates to agricultural pesticide with essential oil and an application thereof. The agricultural pesticide comprises the following components: 5-90% of the essential oil with insecticidal active components, and 5-90% of solvent, 5-90% of pesticide adjuvant. The essential oil is one or mixture made one from wintergreen oil, camphor tree oil, clove oil, peppermint oil, eucalyptus oil, citronella oil or tea tree oil. The solvent is one or a mixture made of formic acid, acetic acid, propionic acid, methyl alcohol, ethyl alcohol or propyl alcohol. The pesticide adjuvant is one or mixture made of dodecyl benzenesulfonic acid, Tween-80, Span-80 (SPAN) or OP-10. The invention has low toxin for animals, safety for environment, efficiency for pests at each life stage and good effects for killing mites and pests. The agricultural pesticide has simple use method and low manufacturing cost, and is suitable for killing the mites and the pests in agriculture and forestry.

The present invention relates to aqueous polyurethane dispersions that are free from N-methylpyrrolidone and other solvents and wherein the polyurethanes are the reaction products of A) a mixture of 25% to 90% by weight of 1-isocyanate-3,3,5,-trimethyl-5-isocyanatomethylcyclohexane (IPDI) and 10% to 75% by weight of 4,4′-diisocyanatodicyclohexylmethane, wherein the preceding percentages are based on the weight of component A), with B) one or more polyols having average molarcular weights (Mn) of 500 to 6000, C) one or more compounds which have at least one OH— or NH-functional group and contain a carboxyl and / or carboxylate group, wherein at least 50 mol % of the acid groups, based on the total moles of acid incorporated into the polyurethane, are incorporated by dimethylolpropionic acid, D) one or more polyols and / or polyamines having average molecular weights (Mn) of below 500, and E) optionally one or more monoalcohols and / or monoamines. The present invention also relates to a process for preparing the aqueous polyurethane dispersions and to the use of the polyurethane dispersions for preparing coatings or adhesives.