311 results about "1-Propanol" patented technology

There are disclosed a method for removing CO2 from a combustion exhaust gas which comprises the step of bringing the combustion exhaust gas under atmospheric pressure into contact with an aqueous solution of a hindered amine selected from the group consisting of 2-amino-2-methyl-1-propanol, 2-methylaminoethanol, 2-ethylaminoethanol and 2-piperidineethanol; and another method for removing carbon dioxide from a combustion exhaust gas which comprises the step of bringing the combustion exhaust gas under atmospheric pressure into contact with a mixed aqueous solution of 100 parts by weight of an amine compound (X) selected from the group consisting of 2-amino-2-methyl-1,3-propanediol, 2-amino-2-methyl-1-propanol, 2-amino-2-ethyl-1,3-propanediol, t-butyldiethanolamine and 2-amino-2-hydroxymethyl-1,3-propanediol; and 1-25 parts by weight of an amine compound (Y) selected from the group consisting of piperazine, piperidine, morpholine, glycine, 2-methylaminoethanol, 2-piperidineethanol and 2-ethylaminoethanol.

Methane is used as the selective dehydrating agent for the production of 2,3,3,3-tetrafluoro-1-propene (R1234yf) from 2,2,3,3,3-pentafluoro-1-propanol. Supported transition metal catalysts are prepared and used for this reaction with high activity. Almost 58% selectivity to R1234yf is obtained at an alcohol conversion level of 60% using unsupported Ni-mesh as the catalyst. Pd and Pt show almost similar level of conversion; however, the selectivity to the desired product is low. The activity of the metal catalyst was found to be a function of the type of support material, activated carbon showing better activity than alumina. Different important process parameters such as temperature, pressure, and contact time are studied to optimize the process. High pressure and temperature are deleterious to the rate of 1234yf formation; yet, the highest yield to 1234yf is obtained while performing a reaction at 494° C. with a contact time of 23 sec.

A process for the preparation of an organosilicon condensate which comprises reacting together a silicon containing compound having at least one silanol group and a silicon containing compound having at least one —OR group or at least one silanol group (or a compound having both groups) in the presence of strontium oxide, barium oxide, strontium hydroxide or barium hydroxide and optionally a solvent such as water, methanol, ethanol, 1-propanol, 2-propanol, 1-butanol and 2-butanol, acetone or toluene.

A method for synthesizing propylene glycol methyl ether relates to a method for synthesizing propylene glycol methyl ether. The method of the invention settles the problems of high reaction temperature, high pressure, low activity of catalyst and low selectivity existing in the prior method for preparing propylene glycol methyl ether. The method comprises the following steps: 1. preparing a compound A; 2. preparing a compound B; and 3. after naturally cooling the mixed solution B to a room temperature, atmospherically distilling and obtaining the propylene glycol methyl ether. The method of the invention has the advantages of simple process, applicable whole reaction in the condition of normal pressure and low-temperature, 93.3%-94.2% of epoxy propane conversion rate, 98.1%-99.1% of product selectivity, and no environment pollution as the whole reaction process is executed under the condition of no dissolvent. The propylene glycol methyl ether (1-methoxy-2-propanol or 2-methoxy-1-propanol) synthesized according to the invention can be synthesized by regulating the mixed liquid of acetate methyl glyoxaline hydroxide or acetate methyl glyoxaline chloride and ferric trichloride.

The invention discloses water-resistant white latex, which comprises the following main components: vinyl acetate, butyl acrylate, diacetone acrylamide, N-hydroxymethyl acrylamide, polyvinyl formal water agent, dibutyl phthalate, deionized water, initiator, defoamer, glycol alcohol, emulsifier, 2-amino-2-methyl-1-propanol. The white latex has the following advantages that: 1, polyvinyl formal is used as protective colloid to improve the water resistance of adhesive; 2, the diacetone acrylamide and the N-hydroxymethyl acrylamide are added as modification-polymerization monomer so as to increase crosslinking density and improve bonding strength; and 3, the butyl acrylate is added as the modification-polymerization monomer, and the copolymerization of the butyl acrylate and the vinyl acetate can reduce the glass transition temperature and minimum film-forming temperature of the white latex, improve the low-temperature film-forming performance of emulsion and play a role in internal plasticization so as to increase the flexibility of the white latex.

The invention discloses a reaction type halamine antiseptic. The structural formula of the antiseptic is represented in the description. In the structural formula, the R represents F or Cl, and the R1 and R2 individually represent Cl or Br. The preparation method comprises the following steps: (1) in an alkaline condition, reacting 5,5-dimethylhydantoin with 3-chloro-1-propanol to generate 3-hydroxypropyl-5,5-dimethylhydantoin; (2) carrying out one-step reaction between sodium sulfanilate and 3-hydroxypropyl-5,5-dimethylhydantoin to obtain a halamine antiseptic precursor (II); (3) reacting the halamine antiseptic precursor (II) with sodium hypochlorite so as to obtain the finished product of halamine antiseptic. The chlorine content of the textile processed by the antiseptic can reach 0.35%, the sterilizing rate on staphylococcus aureus can reach 100% in 10 minutes, and the sterilizing rate on escherichia coli O157:H7 can reach 100% within one minute. The operation is simple during the whole synthesis process, no toxic byproduct is generated, and the synthesis raw materials are cheap.

The object of the present invention is to provide 3-hydroxy-3-(2-thienyl)propionamides useful as synthesis intermediates of pharmaceutical preparations and the like and a method for obtaining optically active 3-amino-1-(2-thienyl)-1-propanols using the same with high reaction yield, high optical yield and industrially low cost.

According to the present invention, 3-amino-1-(2-thienyl)-1-propanols are obtained by carrying out asymmetric reduction of a β-ketocarbonyl compound having thiophene ring in the presence of a catalyst constituted from a compound of a group VIII or IX metal in the periodic table (e.g., a ruthenium compound) and an asymmetric ligand represented by a specified optically active diamine derivative (e.g., a diphenylethylenediamine derivative), or using a cell, a treated product of said cell or the like of a microorganism, and as occasion demands, carrying out amidation of the ester group and then carrying out reduction of the amido group.

(each of the substituents is as described in claim 1).

The present invention provides means for preparing a racemate or an optically active substance (S- or R-isomer) of 3-N-methylamino-1-(2-thienyl)-1-propanol represented by the following general formula (I):

wherein R¹ represents any of a hydrogen atom, a C1-8 acyl group, a substituted or substituted C1-8 alkyloxycarbonyl group and a substituted or substituted phenyloxycarbonyl group and R² represents any of a hydrogen atom, a C1-8 alkyl group, a substituted or substituted benzyl group, a C1-8 acyl group, a substituted or substituted C1-8 alkyloxycarbonyl group and a substituted or substituted phenyloxycarbonyl group, with the exception that R¹ is a hydrogen atom and R² is a methyl group or a hydrogen atom, in a simple manner at low cost and in high yield.

An electrophotographic photoreceptor having high sensitivity and hardly affected by the transfer in an electrophotographic process is provided. The electrophotographic photoreceptor includes an undercoat layer containing metal oxide particles and a binder resin and a photosensitive layer disposed on the undercoat layer, wherein the metal oxide particles have a volume average particle diameter of 0.1 μm or less and a 90% cumulative particle diameter of 0.3 μm or less which are measured by a dynamic light-scattering method in a liquid of the undercoat layer dispersed in a solvent mixture of methanol and 1-propanol at a weight ratio of 7:3, and the photosensitive layer contains a binder resin having an ester bond.

The invention discloses a method for preparing an appropriative bonding agent for fiber spraying, which is insulating, absorb in sound adiabatic. It consists of pure acrylic ester emulsion, acrylic acid associative thickeners, water soluble trochaic ammine, burning retardant, dim ethyl, diamino,1-propanol, multifunction substance and purified water. After mixing them and stirring, comes the bonding agent. It has many advantages: high binding strength, high resistively against water and hydrophobic after dryness or film formation, high flame retardancy, atoxigenic and flavorless and resistant to corrosion, etc. Besides, it is low-cost, high-performance, and easy to generalize.

The invention relates to a production process of a textile fiber color modifier. The textile fiber color modifier is prepared from the following raw materials in percentage by weight: 52%-68% of swelling agent, 10%-30% of emulsifying and dispersing agent, and 8%-20% of solvent, wherein the swelling agent is one or more of propylene glycol monomethyl ether, phenoxy-1-propanol, cyclohexanol methyl ether, N-normal-butyl-phthalimide, and N-isopropyl-phthalimide; the emulsifying and dispersing agent is one or more of styrylphenol polyoxyethylene ether sulfonate, polyoxyethylene castor oil, iso-tridecanol polyoxyethylene ether, fatty amine polyoxyethylene ether, polyoxyethylene (60) sorbitan monostearate (namely Tween-60), polyoxyethylene (80) sorbitan monostearate (namely Tween-80), and pesticide emulsifier No.600; and the solvent is one or more of water, ethanol, isopropyl alcohol, ethylene glycol, and ethylene glycol monobutyl ether. The production process comprises the following steps of adding all the materials into a reaction kettle and stirring the materials at 30 DEG C to 50 DEG C for 60 to 90 minutes, thereby obtaining the textile fiber color modifier. The textile fiber color modifier can be used for overcoming the dyeing defects of polyester and blended fabrics of the polyester in dyeing, and the dyed fabrics can meet environmental protection standards.

The invention relates to a catalyst for catalyzing and hydrolyzing glycerol and a preparation method thereof as well as a method for preparing fatty alcohol with low carbon number by using the catalyst to catalyze and hydrolyze the glycerol. In the invention, a supported metal-acid difunctional catalyst is used, so that the glycerol is hydrolyzed under the mild reaction condition to prepare 1-propanol, 2-propanol, propanediol, acetol and the like.

The invention provides a halamine double bond hydantoin antiseptic, and a preparation method and an application thereof. The preparation method comprises the following steps: adding equimolar NaOH and 5,5-dimethylhydantoin into a flask, adding deionized water, stirring until colorlessness and transparency, adding equimolar 3-chloro-1-propanol, heating to 100DEG C, and reacting under condensation refluxing conditions for 10-15h; putting the above obtained substance in a flask, adding a solvent tetrahydrofuran, adding equimolar triethylamine as an acid scavenger, adding equimolar acryloyl chloride under ice bath conditions in a dropwise manner, and reacting for 1h; and reacting at room temperature for 20-24h to obtain 3-(3-propyl acrylate)-5,5-dimethylhydantoin. The method has the advantages of simplicity, high efficiency, no use of an initiator or a cross-linking agent, mild technologic conditions, no need of a high temperature, energy saving, reduction of pollution of industrial waste liquids through using energy of high energy electron beams to initiate, substantial sterilization effect and good application prospect.

Provided is an electrophotographic photoreceptor that is excellent in electric characteristics and can form a high-quality image having reduced ghosting. In the electrophotographic photoreceptor including an undercoat layer containing metal oxide particles and a binder resin on an electroconductive support, and a photosensitive layer disposed on the undercoat layer, the metal oxide particles have a volume average particle diameter of 0.1 μm or less and a 90% cumulative particle diameter of 0.3 μm or less which are measured by a dynamic light-scattering method in a liquid containing the undercoat layer dispersed in a solvent mixture of methanol and 1-propanol at a weight ratio of 7:3; and the photosensitive layer contains a compound represented by the following Formula (I):

where Formula (I), Ar¹ to Ar⁶ each independently represent an aromatic moiety that may have a substituent; X represents an organic moiety that may have a substituent; and n₁ and n₂ each independently represent an integer of 0 to 2.

An electrophotographic photoreceptor having high sensitivity and hardly affected by the transfer in an electrophotographic process is provided. The electrophotographic photoreceptor includes an undercoat layer containing metal oxide particles and a binder resin and a photosensitive layer disposed on the undercoat layer, wherein the metal oxide particles have a volume average particle diameter of 0.1 [mu]m or less and a 90% cumulative particle diameter of 0.3 [mu]m or less which are measured by a dynamic light-scattering method in a liquid of the undercoat layer dispersed in a solvent mixture of methanol and 1-propanol at a weight ratio of 7:3, and the photosensitive layer contains a binder resin having an ester bond.

The present invention discloses one kind of production process of 2-amino-2-methyl-1-propanol. The production process includes the steps of: the reaction of sodium nitrite, isopropanol and polyformaldehyde to obtain 2-nitro-2-methyl-propanol crystal; and reaction of 2-nitro-2-methyl-propanol crystal and H2 to produce 2-amino-2-methyl-1-propanol. The production process is simple, easy in operation, and high in product purity, higher than 98 %.

The invention belongs to the field of chemical materials, and particularly relates to an absorption solvent which is used for collecting or separating carbon dioxide from gas mixture or liquefied gas.The solvent comprises 3-dimethylamino-1-propanol (abbreviated as DMA1P) with a content range of 10-70 wt% and other components with a total content range of 30-90 wt%, wherein, the other components comprise one or more of monoethanol amine, n-propanol amine, hydroxyethyl piperazine, water, physical solvent, inorganic salt or auxiliary agent. The solubility of carbon dioxide in 3-dimethylamino-1-propanol is high and the deabsorption effect is good; simultaneously the reaction heat of the absorption reaction is lower and the energy consumption for collecting or separating carbon dioxide is lower; meanwhile, 3-dimethylamino-1-propanol is a tertiary amine, the carbon chain is a linear chain, six-membered ring with better molecular stability can be formed through hydrogen bond, and the degradation loss of solvent in the use process can be reduced substantially.

A method of using an organic peroxide containing composition as a gel breaker and a method of transporting the composition is disclosed, wherein the composition has a freeze point less than or equal to −10° C. and a diluent which contains water and an organic solvent selected from ethylene glycol, methanol, ethanol and 1-propanol. During shipment, the amount of available oxygen in the composition is less than or equal to 1 weight percent.