66 results about "Dibutylamine" patented technology

The use of a composition that includes a metal salt and an oil soluble amine formaldehyde reaction product scavenges H2S that is present in aqueous fluids (e.g. produced water liquid streams), natural gas and in oil and mixtures thereof (e.g. mixed production streams that contain all three phases) better than either component when used alone. The resulting scavenger combination significantly increases the reaction rate and the overall scavenging efficiency, i.e. capacity over each component when used alone, in the same total amount. Non-limiting examples of the metal salt include zinc or iron carboxylates, and a non-limiting example of an oil soluble amine formaldehyde reaction product is the reaction product of dibutylamine with formaldehyde.

The invention discloses waterborne polyurethane industrial paint and a preparation method thereof, and particularly relates to the technical field of polyurethane paints. The waterborne polyurethane industrial paint is prepared from the following raw materials in parts by weight: 5 to 8 parts of polyether glycol, 3 to 5 parts of castor oil, 8 to 15 parts of isophorone diisocyanate, 10 to 15 partsof dibutyltin dilaurate, 0.5 to 1.5 parts of 1,4-butanediol, 1 to 3 parts of dimethylolpropionic acid, 2 to 4 parts of epoxy resin, 1 to 2 parts of trimethylolpropane, 25 to 40 parts of methyl methacrylate, 1 to 2 parts of triethylamine, 1 to 2 parts of ethylenediamine, 0.8 to 1.2 parts of a photoinitiator, 0.5 to 1 part of a coalescing agent, 0.3 to 0.6 part of a leveling agent, 0.3 to 0.8 part of a thickener, a proper amount of an external cross-linking agent, a proper amount of dibutylamine and sufficient dry nitrogen. And production is carried out through the processes of prepolymerization, emulsification, emulsion modification treatment and paint preparation. The waterborne polyurethane industrial paint is high in storage stability, a formed paint film is not prone to breakage, and the waterborne polyurethane industrial paint is high in water resistance and pollution resistance.

An ink composition having a colorant; a binder resin; and a solvent; wherein the elongation ratio of the binder resin is 400% to 3,000%; wherein the binder resin comprises a urethane resin and a vinyl chloride / vinyl acetate copolymer, and the mixing ratio of the urethane resin:vinyl chloride / vinyl acetate copolymer relative to the total weight of the urethane resin and the vinyl chloride / vinyl acetate copolymer is 50:50 to 99:1; and wherein the urethane resin comprises a urethane-urea resin that is obtained by a process comprising reacting dibutylamine and a urethane prepolymer obtained by a process comprising reacting a polymeric polyol component having a number average molecular weight of 500 to 10,000 and an organic diisocyanate component having terminal isocyanate groups. A heat insulating foamed paper container material having at least one print pattern formed from said ink composition.

The present invention relates to preparation process and apparatus of polyurethane fiber. The preparation process includes: mixing PTMEG, MDI and 1,3-propylene glycol in a prepolymerizing reactor; and pre-polymerization in the prepolymerizing reactor separated into two sections, including a front main section to the material to the reaction temperature of 70-75 deg.c via 80-90 deg.c hot water led into its jacket and a back section to cool and stabilize the prepolymer via 5 deg.c cooling water led into its jacket. The solvent used is pyrrolidone, which can makes the chain-expanding reaction smooth, eliminate gel and raise the concentration of spinning liquid and the chain expanding agent used is benzene diamine and dibutylamine to raise the strength and dyeing performance of the fiber.

The invention relates to the field of rubber vulcanization accelerators, in particular, it provides a method for preparing zinc dibutyldithiocarbamate, which is added to a reaction solution containing zinc oxide, dibutylamine, a dispersant and a first organic solvent Carbon disulfide is added dropwise to react, and zinc dibutyldithiocarbamate is obtained after the reaction, wherein the first organic solvent is insoluble in water, and the obtained zinc dibutyldithiocarbamate is insoluble or slightly soluble in the first organic solvent . The method adopts an anhydrous solvent method to prepare zinc dibutyldithiocarbamate, which eliminates the generation of saline waste water. Since the first organic solvent is insoluble in water, the two can be separated by liquid separation. The first organic solvent The solvent can be reused after removing the water, reducing the cost of the solvent and increasing the yield of the product. The above method is easy to operate, avoids the generation of salty waste water, is a clean and environmentally friendly new method, and is easily applied to large-scale production practices.

A metal fine particle for a conductive metal paste includes a protective agent covering a surface of the metal fine particle. An amount of heat generated per unit mass (g) of the metal fine particle is not less than 500 J at a temperature of an external heat source temperature in a range of 200° C. to 300° C. when being calcined by the external heat source. The protective agent includes at least one selected from the group consisting of dipropylamine, dibutylamine, triethylamine, tripropylamine, tributylamine, butanethiol, pentanethiol, hexanethiol, heptanethiol, octanethiol, nonanethiol, decanethiol, undecanethiol and dodecanethiol. The content of the protective agent is in a range of 0.1 to 20% by mass with respect to the mass of the metal fine particle.

A material that can be used in a wide temperature range is provided. A graphene compound includes graphene or graphene oxide and a substituted or unsubstituted chain group, the chain group includes two or more ether bonds, and the chain group is bonded to the above graphene or graphene oxide through a Si atom. Alternatively, a method for forming a graphene compound includes a first step and a second step after the first step. In the first step, graphene oxide and a base are stirred under a nitrogen stream. In the second step, the mixture is cooled to room temperature, a silylating agent that has a group having two or more ether bonds is introduced into the mixture, and the obtained mixture is stirred. The base is butylamine, pentylamine, hexylamine, diethylamine, dipropylamine, dibutylamine, triethylamine, tripropylamine, or pyridine.

The invention discloses a synthesis technology of a twin-tailed hydrophobic monomer based on distillation pressure control. The technology comprises the following steps: 1, dissolving acryloyl chloride in a dichloromethane solution; 2, adding the above obtained acryloyl chloride and dichloromethane mixed solution, dibutylamine and an aqueous solution of NaOH into a reaction container, and fully shaking; 3, placing the reaction container in a water bath; 4, stirring, and introducing an inert gas; 5, separating out an organic layer, and washing; 6, drying, and distilling under 0.2-0.6atm to vaporize a solvent in order to obtain a light yellow oily liquid; and 7, adding a polymerization inhibitor, carrying out reduced pressure distillation under a certain degree of vacuum at a certain temperature to obtain a colorless oily liquid which is a target product. The twin-tailed hydrophobic monomer can be successfully synthesized through the technology, and the synthesized twin-tailed hydrophobic monomer has the advantages of excellent performances, simple synthesis steps and substantially reduced synthesis cost; and the distillation pressure in the synthesis process is controlled to improve the yield and the quality of the product.

The invention discloses a synthesis technology of a twin-tailed hydrophobic monomer based on stirring time control. The technology comprises the following steps: 1, dissolving acryloyl chloride in a dichloromethane solution; 2, adding the above obtained acryloyl chloride and dichloromethane mixed solution, dibutylamine and an aqueous solution of NaOH into a reaction container, and fully shaking; 3, placing the reaction container in a water bath; 4, stirring for 20-40min, and introducing an inert gas; 5, separating out an organic layer, and washing; 6, drying, and distilling to vaporize a solvent in order to obtain a light yellow oily liquid; and 7, adding a polymerization inhibitor, and carrying out reduced pressure distillation under a certain degree of vacuum at a certain temperature to obtain a colorless oily liquid which is a target product. The twin-tailed hydrophobic monomer can be successfully synthesized through the technology, and the synthesized twin-tailed hydrophobic monomer has the advantages of excellent performances, simple synthesis steps and substantially reduced synthesis cost; and the stirring time in the synthesis process is controlled to improve the yield and the quality of the product.